NEWSLETTERof the International Consortium“Development of High-Power Terahertz
Science & Technology”
June 2016№3

CONTENT

Editorial (Page 1)
How to contribute to the Newsletter
Research highlights (Page 2)
International collaboration as a way to novel THz physics and techniques
Presenting our collaborators (Page 7)
Consortium of Excellence for THz Science and Technology at TORIC(NTHU), Taiwan
Announcements of scientific events (Page 8)List of selected recent publications and patents (Page 10)New books (Page 21)News from the Net (Page 21)

EDITORIAL: HOW TO CONTRIBUTE TO THE NEWSLETTER
Dear Reader,
As usual, immediately after the publication of the current Newsletter, we are calling for submissions to
the next issue and begin collecting relevant information from the institutions participating in theInternational Consortium for Development of High-Power Terahertz Science and Technology. As alreadyannounced in the previous editorials and can be seen in the issues published so far, we are inviting
contributions to the following rubrics:
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Research highlights (annotations) presenting the projects pursued by the members of the Consortium.
Short regular papers.
Proposals for collaborative research work.
News from the participating institutions.
Information about conferences, symposia, workshops, seminars.
Programs and frameworks for an exchange of visits and mobility of researchers. Job opportunities(especially for young researchers, e.g. postdoctoral positions, specializations, internships).
Annotations of books, conference proceedings, software and internet resources. Additions to the list of therecent scientific publications and conference reports at the website of the Consortium (http://fir.ufukui.ac.jp/Website_Consortium/publist.html).
Information and announcements about awards and nominations.
Short presentations of laboratories and research groups belonging to the participating institutions.

We believe that this Newsletter could become an essential source of information about ourcollaborative work on the development of high-power THz science and technology. For this to happen,
however, more active participation of the researchers from the member institutions is necessary. We do
expect that the number of submissions to the next issues will grow and cordially invite and encourage ourcolleagues to contribute by sending us any relevant information on the topics listed above.
Since our aim is to facilitate the exchange of information without overloading the contributors withroutine technical procedures and details, there are not special requirements concerning the preparation of
the submitted materials. Please use MS Word document in Times New Roman text format. The
illustrative materials (e.g. photos, figures) are acceptable in any of the commonly used formats (JPG, GIF,
TIFF, and PNG). Each submission should begin with a title followed by the names and the affiliations of
the authors. The manuscript could be structured as a research paper (divided in sections and subsections
and including an abstract, references, acknowledgements, etc.) or as a short note (letter) consisting of one
or several paragraphs. There are no strict restrictions concerning the volume of the materials but it isexpected that they will be between ½ -1 page for short notes and announcements and 5-8 pages for allother presentations.
Please submit your contributions to the Newsletter as well as requests for information to:Professor Toshitaka Idehara
Supervisor of International Cooperation
and Facilitator of the International
Consortium
FIR UFidehara@fir.u-fukui.ac.jp

Dr. Svilen Sabchevski
Editor of the website and the Newsletter
Institute of Electronics of the Bulgarian
Academy of Sciences (IE-BAS)sabch@ie.bas.bg

RESEARCH HIGHLIGHTSInternational collaboration as a way to novel THz physics and techniques
Mikhail Glyavin
Institute of Applied Physics, Russian Academy of Sciences,
Nizhniy Novgorod, Russia

Members of the newly formed International Consortium of THz Photonics and Optoelectronics met in
Moscow

The International Consortium of THz Photonics and Optoelectronics was established on 17 December
2015, in Moscow, by 71 partners from 15 countries. A memorandum of understanding (MOU) was signedby the parties. The MOU outlined the intent by the participants to further relations among them to
implement international scientific, technological, and educational cooperation related to the properties andpossible applications of terahertz (THz) photonics and optoelectronics. The participants agreed toestablish long-term partnerships and take concerted actions for joint fundamental and applied research on
topics of mutual interest. Among the main goals of the consortium is cooperation in developing a longterm strategy and implementing specific actions aimed at scientific cooperation and coordination of R&D,
fostering improved communication and consultation among the members, and assisting in thedevelopment of educational programs and publications.
At the Consortium meeting, Professor T. Idehara and Professor M. Glyavin presented reports, related tothe development of high-frequency gyrotrons. A nice example of the joint research in powerful THz
generation is the development of a novel second harmonic gyrotron with an improved mode selection due
to the usage of a dual-beam electron-optical system (EOS).
Recently, a series of CW and pulsed gyrotrons operating in the frequency band 0.21.3 THz has beendeveloped. Since the output frequency is close to the cyclotron frequency or its harmonics (and therefore
is proportional to the magnetic field intensity in the resonant cavity) the availability of sufficiently strongsuperconducting magnets is the main limiting factor for a further advancement towards higher
frequencies. The most affordable cryomagnets (i.e. having a reasonable cost and appropriate dimensions)are capable of producing a magnetic field with a maximum intensity of about 1015 T. Thus, in thefrequency range 0.71.0 THz an operation at harmonics of the cyclotron frequency is inevitable. Such
operation, however, is prone to many well-known problems. Among them, the most serious are the lower
efficiency of the interaction and the mode competition. In order to overcome the latter a careful mode
selection and a suppression of the parasitic modes has to be ensured. For suppression of the competing
modes two groups of methods, namely electron selection (e.g. using an axis-encircling electron beam,
which couples only to the co-rotating modes with an azimuthal index that equals the harmonic number asin the so-called Large Orbit Gyrotron (LOG)) or, alternatively, electrodynamical selection (for instance,
through an appropriate profiling of the cavity resonator and the field profile inside it). Unfortunately, thefirst method requires a complicated EOS that forms a uniaxial beam (using a cusp-gun or a kicker) insteadof a helical electron beam of a conventional EOS with a magnetron injection gun (MIG). The second
method also has a significant drawback because it demands an extremely high accuracy of the
manufacturing of the circuit components.
In this project, we explore a promising alternative approach in order to solve the above-mentioned
problems. It is based on the usage of a multiple-beam scheme. The previous experience with such systems(see, for example, [V.E. Zapevalov, V.N. Manuilov, O.V. Malygin, Sh.E. Tsimring, “High-power twinbeam gyrotrons operating at the second gyro-frequency harmonic,” Radiophysics and Quantum
Electronics, 37, 3, 237-240 (1994)]) has demonstrated that even in the simplest arrangement which uses
only one additional electron beam (with a current that amounts to 20-30% of the main beam current) the
spurious modes can be suppressed effectively. Moreover, it has been shown that the output power atsecond harmonic operation can be almost doubled. Here, we extend this concept to the development ofTHz-range gyrotrons operating in CW regime at the second and third harmonics of the cyclotron
frequency and estimate the appropriate operational parameters.
The principle of operation of multi-beam gyrotrons is shown in Fig.1. There are two possibilities tosuppress the competing mode. The first one is to use the so-called generating (aka co-generating) beams
when both helical electron beams (HEBs) have close values of the pitch-factors (g1g2>1). The second
way is to form an additional HEB with g2<<1 (the smaller, the better), which can be used for absorbing
the power of the parasitic modes at the fundamental, while for the main beam again the condition g1>1 isfulfilled.
For a better understanding of the suppression of spurious modes it is instructive to consider the radial
dependence of the coupling coefficients G(R1) and G(R2) of the operating and the competing modes to theelectron beam given byG ( R) J m2  s ( m, p R / Rw )( m2 , p  m2 ) J m2 ( m, p )Here, the eigenvalue  m , p of the mode Tem,p is the pth root of the equation J m ( )  0 , and Rw is theradius of the waveguide. For the case when both beams are used for generating microwave radiation (g1,
g2 >1) it is possible to choose the operating mode and beam radii in such a manner that the radii R1, R2 ofboth thin annular beams correspond to the maxima of the function Gop(R) of the desired mode. At thesame time, for spurious modes, the values of Gpar(R1), Gpar(R2) are essentially lower. Obviously, suchcondition is favorable for a self-excitation of the chosen operating mode. In the case when the additional
beam (with g2<<1) plays a role of an absorber, it is possible to provide favorable conditions for theoperating mode (i.e. Gop(R1) close to the maximum) while for the additional beam the coupling is small(Gop(R2) << Gop(R1)). At the same time, one should ensure the opposite situation for the parasitic mode,
namely its coupling to the main beam with a high pitch factor should be small, while its coupling to theadditional absorbing beam should be close to the maximum. As a result, the spurious mode will be
suppressed effectively.

Fig.1 Schematics of multi-beam gyrotrons with either two generating beams or with a generating and anabsorbing beams.
The double beam scheme gives a chance to widen the operational parameter space and particularly toincrease significantly the beam current and thus the output power of the generated radiation. The starting
currents of the main second harmonic mode and these of the most critical parasitic modes at thefundamental harmonic are presented in Fig.2. It can be seen, that for the single beam case (k=0 or k=1,
where k is the ratio of the internal beam current and the total current) the starting current of the parasitic

mode is approximately two times higher, comparing with the main mode, but for k~0,7 the starting currentof any parasitic mode is four times higher than that of the operating one. Therefore, it appears that thepreferable case is the one with currents Io2=0.66 A and Io1=0.34 A correspondingly.

Fig.2. Stating currents for operating and spurious modes as a function of the ratio k=Io2/Itot for the case of
two generating beams in the cavity with a total current Itot=Io1+Io2 =1 A.
The design of the tube is based on a 15 T liquid helium-free superconducting magnet JMTD15T52
produced by JASTEC Ltd. and utilizes a high-voltage power supply with a fixed operating voltage of 20
kV, and a beam current up to 2 A.
The optimized configuration of MIG electrodes, obtained by EPOS code for the second harmonic
TE8,5 mode is shown in Fig.3. For numerical analysis of mode excitation and mode competition we use
homemade codes and 3D CST Studio Suite PIC code. The results of simulations are presented in Fig.4.

Fig. 3. Geometry of the magnetron injection gun (cathode and anode).

It is seen, that for a beam current of about 2A, at single beam scheme excitation of fundamental
parasitic mode has been observed (left column). At the same time, for double beams system with the same
parameters, a stable single mode operation at the second harmonic takes place (right column). The
analysis shows that the introduction of the additional generating electron beam allows to remarkably
increase the operating current up to 2 A with an effective suppression of self-excitation of spurious modes
at the fundamental harmonic (Fig.4). The maximum electron efficiency achieves a value of 2.5% withohmic losses about 80%. The concept makes it possible to achieve the radiation power up to 100-200 W in
the single-mode CW regime of generation at the frequency of 0.79 THz. In order to increase the total
efficiency, a scheme of energy recovery based on separation of two beams into the collector sections withdifferent decelerating potentials is under discussion.

Fig. 4. Start-up scenario of a single beam and a double beam gyrotron.
The MIG has been developed and manufactured by IAP RAS and a demountable tube has been madeby FIR UF. The experimental tests of the double-beam gyrotron are planned for the beginning of June
2016. In a case of successful experiments, a novel source for high resolution DNP/NMR spectroscopy
with a record frequency will be realized.
References
1.

V.N. Manuilov, M.Yu. Glyavin, A.S. Sedov, V.Yu. Zaslavsky, T. Idehara, “Design of a Second
Harmonic Double-Beam Continuous Wave Gyrotron with Operating Frequency of 0.79 THz,”
Journal of Infrared, Millimeter, and Terahertz Waves, 36, 12, 1164-1175 (2015)

2.

N.S. Ginzburg, M.Yu. Glyavin, A.M. Malkin, V.N. Manuilov, R.M. Rozental, A.S. Sedov, A.S.
Sergeev, V.Yu. Zaslavsky, I.V. Zotova and T. Idehara, “Improvement of operation stability at highcyclotron harmonics in the double-beam THz range gyrotrons,” IEEE Trans. on Plasma Science(submitted).

PRESENTING OUR COLLABORATORS

Consortium of Excellence for THz Science and Technology
at Tsinghua Optoelectronic Research Interdisciplinary Center(TORIC), National Tsinghua University (NTHU), Taiwan

The current research areas of the center members are as follows: High-power Coherent THz generation by tunable injection-seeded FEL for THz Nonlinear Photonics(Y. C. Huang, NTHU)

 Development of Gyrotron-based high-power submillimeter wave sources and applications (T. H.
Sam Chang, NTHU)

 Metamaterial (T. J. Yen, NTHU), semiconductor (J. W. Shi, NCU) and Liquid Crystal (R. P. Chao,
NCTU) based functional THz photonic elements.

 Multi-service THz Radio-over-fiber communication and sensing network for future ultra-broadband
media, data and biomedical applications (C. L. Pan (NTHU), C. K. Sun (NTU), Jin-Wei Shi (NCU),
Robin Huang (NTHU), Chi-Wai Chow (NCTU))

 THz and Ultrafast diagnostics for advance materials
Faculty members of the proposed Center of Excellence for THz Science and Technologies are among theworld's foremost scientists who advance the state-of-art of THz Science and technology and exploit theunique advantages of terahertz (THz) radiation for various applications. The co-PI also have active
international collaborations with groups in the Russian Academy of Sciences, Stanford University, UC
Davis, Pisa University, Osaka University and Fukui University, Japan.

The main aim of the center is to provide adequate infrastructures and foster closer collaboration between
participating scientists both in Taiwan and abroad. This will be accomplished by setting up, staffing andmaintaining state-of-art laboratories as user facilities; funding guest researcher visits and by organizing
symposiums and conferences.
For more details please visit the website of the consortium (from which this information is extracted) at:
http://thoric.web.nthu.edu.tw/files/15-1893-66834,c8974-1.php?Lang=en
http://thoric.web.nthu.edu.tw/files/15-1893-94652,c9044-1.php?Lang=zh-tw

ANNONCEMENTS OF SCIENTIFIC EVENTSThe 6th International Workshop on Far-Infrared Technologies(IW-FIRT 2017) and The 2nd International Symposium on
Development of High Power Terahertz Science and Technology(DHP-TST 2017)(7-9 March 2017, University of Fukui, Fukui, Japan)
The International Workshops on Far-Infrared Technologies (IW-FIRT) has been held five times in the past:
1999, 2002, 2010, 2012 and 2014. In these workshops it was aimed to discuss the recent development andfuture directions of far-infrared and terahertz science and technologies with a special emphasis on highpower radiation sources in this frequency region and their applications. On the other hand, the first
International Symposium on Development of High Power Terahertz Science and Technology (DHP-TST2013) was held in 2013 for discussion of the development of gyrotrons in sub-THz to THz band and theirapplications. This symposium was associated with the International Consortium "Promoting International
Collaboration for Development and Application of Submillimeter Wave Gyrotrons," which consisted of
six overseas institutions and three domestic institutions including FIR UF as the moderator institute. This
International Consortium was reorganized and expanded in 2015 to the new International Consortium for"Development of High-Power Terahertz Science and Technology” (Visit: http://fir.u-fukui.ac.jp/
Website_Consortium/), which consists of thirteen institutions from the world including FIR UF as thefacilitator institute. We feel that it is the time to organize IW-FIRT and DHP-TST as a joint meeting to
update our knowledge and understanding in this rapidly developing field. Therefore, we organize the Sixth
International Workshop on Far-Infrared Technologies (IW-FIRT 2017) and The 2nd International
Symposium on Development of High Power Terahertz Science and Technology (DHP-TST 2017) jointly,
rather than organize them separately. An important aspect of this joint meeting is to discuss the present
status and future prospect of application of high power terahertz technologies.
The joint workshop and symposium consist of invited talks, oral presentations, a panel discussion and aposter session with the following scope of topics:
1) Development of high power radiation sources in the far-infrared region,2) Application of high power terahertz technologies especially to the following topics:2-1) Terahertz spectroscopy;2-2) Magnetic resonance phenomena in the far-infrared region;2-3) Material development with high-power FIR sources.
3) Other subjects related to the far-infrared region.
For information about the past workshops of IW-FIRT and DHP-TS please follow the links:
5th IW-FIRT 2014, 4th IW-FIRT 2012, 3rd IW-FIRT 2010, and DHP-TST 2013
For more details please visit the official site of IW-FIRT 2017:
http://fir.u-fukui.ac.jp/IWFIRT/IWFIRT2017/index.html

CONFERENCES
41st International Conference on Infrared, Millimeter and Terahertz Waves, 25-30 September, 2016,
Copenhagen, Denmark – Bella Center.
http://www.irmmw-thz2016.org/
The 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Metamaterials 2016.
The event will comprise a 4-day Conference (19–22 September 2016), and a 2-day Doctoral School (17–18 September 2016) at Via vito volterra 62, Chania, Crete, Greece.
http://congress2016.metamorphose-vi.org/
European Microwave Wek 2016, 3 –7th October 2016, ExCell London, UK (five days and threeconferences: The 46th European Microwave Conference (EuMC); The 13th European Radar Conference(EuRAD 2016), and The 11th European Microwave Integrated Circuits Conference (EuMIC).
http://www.eumweek.com/conferences/eumc.html
An International Joint Conference of the 9th Global Symposium on Millimeter-Waves (GSMM 2016) and
The 7th ESA Workshop on Millimetre-Wave Technology and Applications, June 6-8, 2016, Aalto
University, Espoo, Finland.
http://gsmm2016.aalto.fi/
The 9th International Kharkiv Symposium on Physics and Engineering of Microwaves, Millimeter and
Sub Millimeter Waves and Workshop on Terahertz Technologies, 20-24 June 2016, Kharkiv, Ukraine.
http://www.msmw.org.ua/

The 16th International Conference on Mathematical Methods in Electromagnetic Theory (MMET 2016),
5-7 July 2016, Lviv, Ukraine.
http://mmet.org/2016/index.php
The 4th Advanced Electromagnetics Symposium (AES 2016), Convention & Exhibition Centre,
Torremolinos (Malaga), Spain, July 26, 2016 – July 28, 2016.
http://mysymposia.org/index.php/AES16/AES16
The 9th International Conference on Microwave Materials and Their Applications.
July 3(Sun.)~6(Wed.), 2016, Seoul Olympic Parktel, Seoul, Korea.
http://www.mma2016.org/
IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling andOptimization for RF, Microwave and Terahertz Applications (NEMO 2016), 27-29 July 2016,
Beijing,China.
http://nemo-ieee.org/
International Microwave and Terahertz Technology Conference (ICMTT 2016), 4-5 June, New York, US.
http://theconferences.org/conference/2016/06/new-york/ICMTT2016 IEEE MTT-S International Microwave Workshop Series onAdvanced Materials and Processes for
RF and THz applications, 20-22 July, 2016, Chengdu, China.
http://www.ee.uestc.edu.cn/imws-amp2016/Important_Dates.html

The 3rd Global Congress on Microwave Energy Applications (3rd GCMEA), Cartagena, Spain, July 2529, 2016.
http://cpcd.upct.es/3gcmea/
Eighteenth edition of the International Conference on Electromagnetics in Advanced Applications(ICEAA 2016) coupled to the sixth edition of the IEEE-APS Topical Conference on Antennas andPropagation in Wireless Communications (IEEE-APWC 2016), 19-23 September 2016, Cairns, Australia.
http://www.iceaa-offshore.org/j3/
The IEEE and MTT-S International Microwave and RF Conference (IMaRC), 5-9 December, 2016, New
Delhi, India.
http://www.imarc-ieee.org/
The 3rd International Conference on Microwave and Terahertz Technology (ICMTT 2017)2017-03-18~2017-03-20 Bangkok, Thailand.
http://www.aconf.org/en-us/conf_74134.html

2017 IEEE/MTT-S International Microwave Symposium - MTT 2017 (IMS), 4 Jun - 9 Jun 2017,
Honololu, HI, USA.
http://ims2017.org/

LIST OF SELECTED RECENT PUBLICATIONS
Bibliography and links to selected recent publications on topics related to the research
field of the International Consortium
A. Publications by authors from the institutions participating in the International Consortium
Bulgarevich D.S., Shiwa M., Furuya T., Tani M., "Gigahertz time-domain spectroscopy and imaging fornon-destructive materials research and evaluation," Scientific Report, vol. 6 (2016) Article number 27980.
DOI: 10.1038/srep27980.
http://www.nature.com/articles/srep27980
Bakunov M.I., Gorelov S.D., Tani M., "Nonellipsometric Noncollinear Electrooptic Sampling of Terahertz
Waves: A Comprehensive Theory," IEEE Trans. on Terahertz Science and Technology, vol. 6, n. 3 (2016)473-479. DOI: 10.1109/TTHZ.2016.2543601.
http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=7460971
Morikawa O., Yamamoto K., Kurihara K., Tani M., Kuwashima F., Hangyo M., "Aperture transmission
measurements for characterization of focusing of sub-THz radiation," Journal of the Optical Society ofAmerica B, vol. 33, n. 7 (2016) 1456-1461. DOI: 10.1364/JOSAB.33.001456.
https://www.osapublishing.org/josab/abstract.cfm?uri=josab-33-7-1456
Ishida A., Namba T., Asai S., “Measurement of positronium thermalization in isobutane gas for precision
measurement of ground-state hyperfine splitting,”, Journal of Physics B: Atomic, Molecular and Optical
Physics, 49 (6) (2016) 064008. DOI: 10.1088/0953-4075/49/6/064008.
http://iopscience.iop.org/article/10.1088/0953-4075/49/6/064008/metaIshiyama S., Masamune K., Idehara T., “THz beam transmission experiment using metallic claddingpolymer fibers,” Transactions of the JSME, vol. 82, no. 833 (2016) 15-00449 (In Japanese).
DOI:10.1299/transjsme.15-00449.
https://www.jstage.jst.go.jp/article/transjsme/82/833/82_15-00449/_article/-char/ja/
Miyoshi N., Idehara T., Khutoryan E., Fukunaga Y., Bibin A.B., Ito S., Sabchevski S.P., "Combined
Hyperthermia and Photodynamic Therapy Using a Sub-THz Gyrotron as a Radiation Source", Journal of
Infrared, Millimeter, and Terahertz Waves, (2016) 10 pp. DOI: 10.1007/s10762-016-0271-z. (First online:
04 April 2016).
http://link.springer.com/article/10.1007/s10762-016-0271-z
Ueda K., Matsuki Y., Fujiwara T., Tatematsu Y., Ogawa I., Idehara T., "Further Characterization of 394GHz Gyrotron FU CW GII with Additional PID Control System for 600-MHz DNP-SSNMR
Spectroscopy", Journal of Infrared, Millimeter, and Terahertz Waves, (2016) 12pp. DOI: 10.1007/s10762016-0276-7.
http://link.springer.com/article/10.1007%2Fs10762-016-0276-7
Matsuki Y., Idehara T., Fukuzawa J., Fujiwara T., “Advanced instrumentation for DNP-enhanced MAS
NMR for higher magnetic field and lower temperature,” Journal of Magnetic Resonance 284 (2016) 107115. DOI: 10.1016/j.jmr.2016.01.022.
http://www.sciencedirect.com/science/article/pii/S1090780716000781
Sudiana, I. Nyoman, Mitsudo S., Sako K., Inagaki S., Ngkoimani L.O., Usman I., Aripin H., “Themicrowave effects on the properties of alumina at high frequencies of microwave sintering,” AIP
Conference Proceedings, 1719 (2016) 03001. DOI: 10.1063/1.4943709.
http://scitation.aip.org/content/aip/proceeding/aipcp/10.1063/1.4943709
Munroe B.J., Zhang, J.X., Xu H., Shapiro M.A., Temkin R. J., “Experimental high gradient testing of a17.1 GHz photonic band-gap accelerator structure,” Phys. Rev. Accel. Beams, 19 (3) (2016) 031301. DOI:
10.1103/PhysRevAccelBeams.19.031301.
http://link.aps.org/doi/10.1103/PhysRevAccelBeams.19.031301
Skalyga V., Izotov I., Golubev S., Vodopyanov A., Tarvainen O., “First experiments with gasdynamic ion
source in CW mode,” Review of Scientific Instruments, 87 (2016) 02A715. DOI:
http://dx.doi.org/10.1063/1.4934208.
http://scitation.aip.org/content/aip/journal/rsi/87/2/10.1063/1.4934208
Kulygin M., Denisov G., Vlasova K., Andreev N., Shubin S., Salahetdinov S., “Sub-terahertz microsecond
optically controlled switch with GaAs active element beyond the photoelectric threshold,” Review of
Scientific Instruments, 87 (2016) 014704. DOI: 10.1063/1.4939673.
http://scitation.aip.org/content/aip/journal/rsi/87/1/10.1063/1.4939673
Ginzburg N.S., Cross A.W., Golovanov A.A., Phelps A.D.R., Romanchenko I.V., Rostov V.V., Sharypov
K.A., Shpak V.G., Shunailov S.A, Ul'masculov M.R., Yalandin M.I., Zotova I.V., "Coherent Summation of
Emission From Relativistic Cherenkov Sources as a Way of Production of Extremely High-Intensity
Microwave Pulses," IEEE Trans. on Plasma Science (2016) 9 pp. DOI: 10.1109/TPS.2016.2517670.

Ginzburg N.S., Rozental R.M., Sergeev A.S., Zotova, I.V., “Time-domain model of gyroklystrons withdiffraction power input and output,” Physics of Plasmas, 23 (2016) 033108. DOI: 10.1063/1.4943277.
http://scitation.aip.org/content/aip/journal/pop/23/3/10.1063/1.4943277
Bratman V.L., A.V. Savilov, Chang T.H., “Possibilities for Continuous Frequency Tuning in Terahertz
Gyrotrons with Nontunable Electrodynamic Systems,” Radiophysics and Quantum Electronics, 58 (9) 9(2016) 660-672. DOI: 10.1007/s11141-016-9638-1.
http://link.springer.com/article/10.1007/s11141-016-9638-1
Glyavin M.Yu., Morozkin M.V., Tsvetkov A.I., Lubyako L.V., Golubiatnikov G.Yu, Kuftin A.N.,
Zapevalov V.E., Kholoptsev V.V., Eremeev A.G., Sedov A.S., Malygin V.I., Chirkov A.V., Fokin A.P.,
Sokolov E.V., Denisov G.G., "Automated Microwave Complex on the Basis of a Continuous-Wave
Gyrotron with an Operating Frequency of 263 GHz and an Output Power of 1 kW", Radiophysics andQuantum Electronics (2016) 10 pp. DOI: 10.1007/s11141-016-9636-3.
http://link.springer.com/article/10.1007/s11141-016-9636-3
Bandurkin I.V., Kalynov Yu.K., Savilov A.V., "Experimental Study of a Gyrotron with a Sectioned
Klystron-Type Cavity Operated at Higher Cyclotron Harmonics", Radiophysics and Quantum Electronics(2016) 7 pp. DOI: 10.1007/s11141-016-9641-6.
http://link.springer.com/article/10.1007/s11141-016-9641-6
Vilkov M.N.,Ginzburg N.S., Denisov G.G., Zotova I.V., Sergeev A.S., "Generation of a Periodic Series ofHigh-Power Ultra-Short Pulses in a Gyro-TWT with a Bleachable Cyclotron Absorber in the Feedback
Circuit", Radiophysics and Quantum Electronics, 58 (8) (2016) 598—606. DOI: 10.1007/s11141-0169631-8.
http://link.springer.com/article/10.1007/s11141-016-9631-8
Zotova I.V., Ginzburg N.S., Denisov G.G., A Rozental’ R.M., Sergeev A.S., “Frequency Locking andStabilization Regimes in High-Power Gyrotrons with Low-Q Resonators,” Radiophysics and Quantum
Electronics (2016) 1573-9120. DOI: 10.1007/s11141-016-9640-7.
http://link.springer.com/article/10.1007/s11141-016-9640-7
Skvortsova N.N., Stepakhin V.D., Malakhov D.V., Sorokin A.A., Batanov G.M., Borzosekov V.D.,
Glyavin M.Yu., Kolik L.V., Konchekov E., Letunov A.A., Petrov A.E., Ryabikina I.G., Sarksyan K.A.,
Sokolov A.S., Smirnov V.A., Kharchev N.K., "Relief Creation on Molybdenum Plates in Discharges
Initiated by Gyrotron Radiation in Metal-Dielectric Powder Mixtures", Radiophysics and Quantum
Electronics (2016) 9 pp. DOI: 10.1007/s11141-016-9642-5.
http://link.springer.com/article/10.1007/s11141-016-9642-5
Glyavin M.Yu., Denisov G.G., Zapevalov V.E., Kuftin A.N., Manuilov V.N., Soluyanova E.A., Sedov
A.S., Kholoptsev V.V., Chirkov A.V., “Peculiarities of optimizing the subsystems of a continuous-wave
gyrotron with a generation frequency of 0.26 THz at the fundamental cyclotron resonance,” Radiophysics
and Quantum Electronics 58 (2016) 11pp. DOI: 10.1007/s11141-016-9637-2.
http://link.springer.com/article/10.1007%2Fs11141-016-9637-2

Glyavin M.Yu., Denisov G.G., Kulygin M.L., Mel'nikova M.M., Novozhilova Yu.V., Ryskin N.M.,"Gyrotron Frequency Stabilization by a Weak Reflected Wave", Radiophysics and Quantum Electronics,
58 (9) (2016) 673-683. DOI: 1007/s11141-016-9639-0.
http://dx.doi.org/10.1007/s11141-016-9639-0
Ruess S., Pagonakis I.G., Gantenbein G., Illy S., Kobarg T., Rzesnicki T., Thumm M., Weggen J.,
Jelonnek J., "An Inverse Magnetron Injection Gun for the KIT 2-MW Coaxial-Cavity Gyrotron," IEEE
Trans. on Electron Devices, (2016) 6 pp. DOI: 10.1109/TED.2016.2540298.
http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=7444161&isnumber=4358746
Pagonakis I.G., Piosczyk B., Zhang J., Illy S., Rzesnicki T., Hogge, J.-Ph., Avramidis K., Gantenbein G.,
Thumm M., Jelonnek J., “Electron trapping mechanisms in magnetron injection guns,” Physics ofPlasmas, 23 (2016) 023105. DOI: 10.1063/1.4941705.
http://scitation.aip.org/content/aip/journal/pop/23/2/10.1063/1.4941705
Melnikova M.M., Rozhnev A.G., Ryskin N.M., Tyshkun A.V., Glyavin M.Y., Novozhilova Y.V.,"Frequency Stabilization of a 0.67-THz Gyrotron by Self-Injection Locking," IEEE Trans. on Electron
Devices, 63 (3) (2016) 1288-1293. DOI: 10.1109/TED.2015.2512868.
http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=7381680&isnumber=7419296
Bogdashov A.A., Denisov G.G., Samsonov S.V., Gachev I.G., Dominyuk Ya.V., Murzin V.N., Levitan
B.A., "High-Power Ka-Band Transmission Line with a Frequency Bandwidth of 1 GHZ", Radiophysics
and Quantum Electronics (2016) 12 pp. DOI: 10.1007/s11141-016-9650-5.
http://link.springer.com/article/10.1007%2Fs11141-016-9650-5
Bogdashov A.A., Denisov G.G., Samsonov S.V., Gachev I.G., Dominyuk Ya.V., Murzin V.N., Levitan
B.A., "High-Power Ka-Band Transmission Line with a Frequency Bandwidth of 1 GHZ," Radiophysics
and Quantum Electronics, (2016) 12 pp. DOI: 10.1007/s11141-016-9650-5.
http://dx.doi.org/10.1007/s11141-016-9650-5
Denisov G.G., Bogdashov A.A., Gachev I.G., Mishakin S.V., Samsonov S.V., "New Radiation
Input/Output Systems for Millimeter-Wave Gyrotron Traveling-Wave Tubes," Radiophysics and Quantum
Electronics, (2016) 8 pp. DOI: 10.1007/s11141-016-9649-y.
http://link.springer.com/article/10.1007/s11141-016-9649-y
Denisov G.G., Shmelyov M.Yu., "Using the Talbot Effect for Summation of Microwave Signals in theMillimeter-Wavelength Band", Radiophysics and Quantum Electronics, 58 (10) (2016) 789-792. DOI:
10.1007/s11141-016-9651-4.
http://link.springer.com/article/10.1007%2Fs11141-016-9651-4
Abubakirov E.B., Bandurkin I.V., Vikharev A.A., Kuzikov S.V., Rozental R.M., Savilov A.V., Fedotov
A.E., "Microwave Undulators and Electron Generators for New-Generation Free-Electron Lasers",
Radiophysics and Quantum Electronics, 58 (10) (2016) 755-768. DOI: 10.1007/s11141-016-9648-z.
http://link.springer.com/article/10.1007%2Fs11141-016-9648-z
Sidorov A.V., Razin S.V., Golubev S.V., Safronova M.I., Fokin A.P., Luchinin A.G., Vodopyanov A.V.,

Glyavin M.Yu. “Measurement of plasma density in the discharge maintained in a nonuniform gas flow bya high-power terahertz-wave gyrotron,” Physics of Plasmas, 23 (2016) 043511. DOI: 10.1063/1.4947219.
http://scitation.aip.org/content/aip/journal/pop/23/4/10.1063/1.4947219
Pagonakis I.Gr., Wu C., Illy S., Jelonnek J., “Multistage depressed collector conceptual design for thinmagnetically confined electron beams,” Physics of Plasmas, 23 (2016) 043114. DOI: 10.1063/1.4947565.
http://scitation.aip.org/content/aip/journal/pop/23/4/10.1063/1.4947565
Wu C., Pagonakis I., Illy S., Thumm M., Gantenbein G., Jelonnek J., "Preliminary studies on Multistage
Depressed Collectors for fusion gyrotrons," 2016 German Microwave Conference (GeMiC), Bochum,
Germany (2016) 365-368. DOI: 10.1109/GEMIC.2016.7461632.
http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=7461632&isnumber=7461526
Ruess S., Rzesnicki T., Pagonakis I.Gr., Kobarg T., "Experimental results and outlook of the 2 MW 170
GHz coaxial-cavity gyrotron towards long pulse operation," 2016 German Microwave Conference(GeMiC), Bochum, Germany (2016) 369-372. DOI: 10.1109/GEMIC.2016.7461633.
http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=7461633&isnumber=7461526
B.

Publications by other authors

Xiang-Bo Qi, Chao-Hai Du, Pu-Kun Liu, "Broadband Continuous Frequency Tuning in a Terahertz
Gyrotron with Tapered Cavity," IEEE Trans. on Electron Devices, 62 (12) (2015) 4278-4284. DOI:
10.1109/TED.2015.2493563.
http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=7321019&isnumber=7331113
Qi X.B., Du C.H., Liu P.K., "High-Efficiency Excitation of a Third-Harmonic Gyrotron," IEEE
Transactions on Electron Devices, vol. 62 (10), (2015) 3399-3405.DOI: 10.1109/TED.2015.2461657.
http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=7182771&isnumber=7272173
Arzhannikov A.V., Burdakov A.V., Burmasov V.S., Ivanov I.A., Kasatov A.A., Kuznetsov S.A., Makarov
M.A., Mekler K.I., Polosatkin S.V., Popov S.S., Postupaev V.V., Rovenskikh A.F., Sinitsky S.L., Sklyarov
V.F., Stepanov V.D., Timofeev I.V, Thumm. M.K.A., "Dynamics and Spectral Composition ofSubterahertz Emission From Plasma Column Due to Two-Stream Instability of Strong Relativistic
Electron Beam," IEEE Trans. on Terahertz Science and Technology, 6 (2) (2016) 245-252. DOI:
10.1109/TTHZ.2016.2525783.
http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=7416251&isnumber=7438979
Batanov G.M., Borzosekov V.D., Golberg D., et al.; “Microwave method for synthesis of micro- andnanostructures with controllable composition during gyrotron discharge,” J. Nanophoton., 10 (1) (2016)
012520. DOI:10.1117/1.JNP.10.012520.
http://nanophotonics.spiedigitallibrary.org/article.aspx?articleid=2484228
Yoon D., Soundararajan M., Cuanillon P., Braunmueller F., Alberti S., Ansermet J.-Ph., “Dynamic nuclear
polarization by frequency modulation of a tunable gyrotron of 260 GHz,” Journal of Magnetic
Resonance, 262 (2016) 62-67. DOI:10.1016/j.jmr.2015.11.008.

http://www.sciencedirect.com/science/article/pii/S1090780715002931
Tianzhong Zhang, Qixiang Zhao, Sheng Yu, Youwei Yang, Yanyan Zhang, Xiang Li, “The nonlinear
simulation, design and experiments on 0.42 THz gyrotron with gradually tapered complex cavity,”
Vacuum, vol. 125 (2016) 85-92. DOI: 10.1016/j.vacuum.2015.11.016.
http://www.sciencedirect.com/science/article/pii/S0042207X15301287

Lohr J., Anderson J., Brambila R., Cengher M., Chen X., Ellis R.A., Grosnickle W., Moeller C., Prater R.,
Ponce D., Riford L., Torrezan A.C., ”The Multiple Gyrotron System on the DIII-D Tokamak,” Journal of
Infrared, Millimeter, and Terahertz Waves, 37 (1) (2016) 21-44. DOI: 10.1007/s10762-015-0201-5.
http://link.springer.com/article/10.1007/s10762-015-0201-5
Shimozuma T., Kobayashi S., Ito S., Ito Y., Kubo S., Yoshimura Y., Nishiura M., Igami H., Takahashi H.,
Mizuno Y., Okada K., Mutoh T, “Development of a Propagating Millimeter-Wave Beam Position andProfile Monitor in the Oversize Corrugated Waveguide Used in an ECRH System,” Journal of Infrared,
Millimeter, and Terahertz Waves, 7 (1) (2016) 87-99. DOI: 10.1007/s10762-015-0196-y.
http://link.springer.com/article/10.1007/s10762-015-0196-y
Shin Chang Seouk, Lee Byoung-Seob, Choi Seyong, Yoon Jang-Hee, Kim Hyun Gy, Ok Jung-Woo, ParkJin Yong, Kim Seong Jun, Bahng Jungbae, Hong Jonggi, Lee Seung Wook, Won Mi-Sook, “Nitrogen ion
implantation into various materials using 28 GHz electron cyclotron resonance ion source,” Review of
Scientific Instruments, 87 (2016) 02A713. DOI: 10.1063/1.4932126.
http://scitation.aip.org/content/aip/journal/rsi/87/2/10.1063/1.4932126

Guo J.W., Sun L., Niu X.J., Zhang X.Z, Lu W., Zhang W.H., Feng Y.C., Zhao H.W., “24 GHz microwave
mode converter optimized for superconducting ECR ion source SECRAL,” Review of Scientific
Instruments, 87 (2016) 02A708. DOI: 10.1063/1.4933023.
http://scitation.aip.org/content/aip/journal/rsi/87/2/10.1063/1.4933023
Anderson J.P., Doane J.L., Grunloh H.L., Callis R.W., Ikeda R., Oda Y., Takahashi K., Sakamoto K.,”Heating Effects in Overmoded Corrugated Waveguide for ITER,” Journal of Infrared, Millimeter, andTerahertz Waves, 37 (1) (2016) 55-71. DOI: 10.1007/s10762-015-0203-3.
http://link.springer.com/article/10.1007/s10762-015-0203-3
Doane J., Grunloh H., Martin W., Wu W., “Polarizer miter bends for high-power microwave transmission:
Ohmic loss and cooling,” Fusion Engineering and Design, 102 (2016) 99-107. DOI:
10.1016/j.fusengdes.2015.11.017.
http://www.sciencedirect.com/science/article/pii/S0920379615303422
Jan van Bentum, Bas van Meerten, Manvendra Sharma, Arno Kentgens, “Perspectives on DNP-enhanced
NMR spectroscopy in solutions,” Journal of Magnetic Resonance, 264 (2016) 59-67. DOI:
10.1016/j.jmr.2016.01.010.
http://www.sciencedirect.com/science/article/pii/S1090780716000513
Wang Yan, Liu Guo, Shu Guoxiang, Yan Ran, Wang Li, E. Agurgo Balfour, Fu Hao, Luo Yong, Wang

Shafei, “Design and measurement of a TE13 input converter for high order mode gyrotron travelling wave
amplifiers,” Physics of Plasmas, 23 (2016) 033101. DOI: 10.1063/1.4942790.
http://scitation.aip.org/content/aip/journal/pop/23/3/10.1063/1.4942790
Jiang Yuying, Ge Hongyi, Lian Feiyu, Zhang Yuan, Xia Shanhong, “Early detection of germinated wheat
grains using terahertz image and chemometrics,” Scientific Reports, 6 (2016) Article number: 21299.
DOI: 10.1038/srep21299. Open Access:
http://www.nature.com/articles/srep21299
Tu C., Chou L., Chen Y., Huang P., Rajaboopathi M., Luo C., Wu K., Krishnakumar V., Kobayashi T.,"THz emission from organic cocrystalline salt: 2, 6-diaminopyridinium-4-nitrophenolate-4-nitrophenol,"Opt. Express 24 (2016) 5039-5044.
DOI: 10.1364/OE.24.005039.
https://www.osapublishing.org/oe/abstract.cfm?uri=oe-24-5-5039
Liu W., Lu Y., He Z., Li W., Wang L., Jia Q., “Broad-tunable terahertz source with over-mode waveguidedriven by train of electron bunches,” Opt Express, 24 (2016) 4109-16. DOI: 10.1364/OE.24.004109.
http://www.ncbi.nlm.nih.gov/pubmed/26907061
Carlos A. Duque, Anton Tiutiunnyk, Álvaro L. Morales, Volodymyr Akimov, Ricardo L. Restrepo, Oksana
Fomina, Víctor Tulupenko, “Terahertz – yesterday, today and tomorrow,” MOMENTO Revista de Física,
No. 51E (2016) 103-115.
http://www.revistas.unal.edu.co/index.php/momento/article/view/55995/55152

Garner J.R., Zhang L., Donaldson C.R., Cross A.W., He W., "Design Study of a Fundamental Mode Input
Coupler for a 372-GHz Gyro-TWA I: Rectangular-to-Circular Coupling Methods," IEEE Transactions on
Electron Devices, 63 (1) (2016) 497-503. DOI: 10.1109/TED.2015.2501028.
http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=7339437
Hashimoto S., Chin S., Kobayashi K., Kawata K., Lin D., Amano S., Miyamoto S., “Development of
Terahertz Radiation Sources Using the LEENA Compact Linear Accelerator,” Electronics andCommunications in Japan, 99 (2016). DOI: 10.1002/ecj.11744. Open Access:
http://onlinelibrary.wiley.com/doi/10.1002/ecj.11744/full
Bakr M., Kawai M., Kii T., Ohgaki H., "CeB6: Emission Performance and Uniformity Compared With
LaB6 for Thermionic RF Guns," IEEE Transactions on Electron Devices, 63 (3) (2016) 1326-1332. DOI:
10.1109/TED.2016.2520951.
http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=7399711&isnumber=7419296
Zhang Luqi, Wei Yanyu, Wang Bing, Shen Wenan, Xu Jin, Gong Yubin, Park Gun-Sik, “Investigation of
0.38 THz backward-wave oscillator based on slotted sine waveguide and pencil electron beam,” Physics
of Plasmas, 23 (2016) 033111. DOI: 10.1063/1.4943410.
http://scitation.aip.org/content/aip/journal/pop/23/3/10.1063/1.4943410
Xiao R., Wang Y., Deng Y., Bai X., Song Z., "Particle-in-Cell Demonstration of the Effect of Voltage RiseTime on Phase Synchronization in Two Parallel Relativistic Backward-Wave Oscillators," IEEE Trans. on
Electron Devices, 63 (3) (2016) 1317-1321. DOI: 10.1109/TED.2016.2520500
http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=7397983&isnumber=7419296
Jiang W., Wang J., Luo Y., Xu L., Yao X., Wang S., "Thermal Analysis of Sheet Beam Gun for the Sheet
Beam Traveling Wave Tube," IEEE Trans. on Electron Devices, 63 (3) (2016) 1312-1316. DOI:
10.1109/TED.2016.2519041.
http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=7397990&isnumber=7419296
Hai Wang, Zejian Lu, Xiaoming Liu, Junsheng Yu, Yuan Yao, Xiaodong Chen, Limei Qi, Zhijiao Chen,“Investigations on Shaped Mirror Systems in Quasi-optical Mode Converters based on Irradiance
Moments Method,” International Journal of Antennas and Propagation, vol. 2016 (2016) Article ID
8043042, 13 pages. DOI: 10.1155/2016/8043042.
http://www.hindawi.com/journals/ijap/aip/8043042/
Rosay M., Blank M., Engelke F., “Instrumentation for solid-state dynamic nuclear polarization with magic
angle spinning NMR,” Journal of Magnetic Resonance, 264 (2016) 88-98. DOI:
10.1016/j.jmr.2015.12.026.
http://www.sciencedirect.com/science/article/pii/S1090780716000495
Green B., Kovalev S., Asgekar V., Geloni G., et al. “High-Field High-Repetition-Rate Sources for the
Coherent THz Control of Matter,” Scientific Reports, 6(2016) 22256. DOI: 10.1038/srep22256. Open
Access:http://www.nature.com/articles/srep22256
Mendis Rajind, Nagai Masaya, Wang Yiqiu, Karl Nicholas, Mittleman Daniel M., “Terahertz Artificial
Dielectric Lens,” Scientific Reports, 6,(2016) 23023. DOI: 10.1038/srep23023. Open Access:
http://www.nature.com/articles/srep23023
Xiaodong Wen, Senlin Huang, Lin Lin, Fang Wang, et al., “Superradiant THz undulator radiation source
based on a superconducting photo-injector,” Nuclear Instruments and Methods in Physics Research
Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 820 (2016) 75-79. DOI:
10.1016/j.nima.2016.03.003.
http://www.sciencedirect.com/science/article/pii/S0168900216300213
Kislov A.Ya., Lysenko S.E., Notkin G.E., "Using High-Power Gyrotrons in the T-10 Tokamak",Radiophysics and Quantum Electronics, (2016) 7 pp. DOI: 10.1007/s11141-016-9643-4.
http://link.springer.com/article/10.1007/s11141-016-9643-4
Hoff D.E.M., Albert B.J., Saliba E.P., Scott F.J., Choi E.J., Mardini M., Barnes A.B., “Frequency swept
microwaves for hyperfine decoupling and time domain dynamic nuclear polarization,” Solid State
Nuclear Magnetic Resonance, 72 (2015) 79-89. DOI: 10.1016/j.ssnmr.2015.10.001.
http://www.sciencedirect.com/science/article/pii/S0926204015300242

Thottappan M., Singh P., Jain P.K., "Gyro-TWT Using a Metal PBG Waveguide as Its RF Circuit-Part I:
Analysis and Design," IEEE Trans. Electron Devices (2016) 7 pp. .DOI: 10.1109/TED.2015.2493963
http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=7328271&isnumber=4358746
Thottappan M., Singh P., Jain P.K., "Gyro-TWT Using a Metal PBG Waveguide as Its RF Circuit-Part II:
PIC Simulation and Parametric Analysis," IEEE Trans. Electron Devices, vol. PP, no. 99 (2016) pp.1-7.
DOI: 10.1109/TED.2016.2543843.
http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=7445198&isnumber=4358746
Fu Wenjie, Guan Xiaotong, Yan Yang, “High harmonic terahertz confocal gyrotron with nonuniform
electron beam,” Physics of Plasmas, 23 (2016) 013301. DOI: 10.1063/1.4939213.
http://scitation.aip.org/content/aip/journal/pop/23/1/10.1063/1.4939213
Ping Zhang, Min Hu, Renbin Zhong, Xiaoxing Cheng, Sen Gong, Tao Zhao , Shenggang Liu,
“A tunable terahertz radiation source based on a surface wave transformed into Cherenkov radiation in a
subwavelength array,” Journal of Physics D: Applied Physics, 49 (14) (2016) 145302. DOI:
10.1088/0022-3727/49/14/145302.
http://iopscience.iop.org/article/10.1088/0022-3727/49/14/145302/meta
Liu D., Wang W., Song T., Zhuang Q., Shen H., Deng S., "A Method to Separate Radiations From a DualFrequency Operation Gyrotron," IEEE Trans. Electron Devices(2016) 4 pp. DOI:
10.1109/TED.2016.2544806.
http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=7445167&isnumber=4358746

Genoud, J., Tran T.M., Alberti S., Braunmueller F., Hogge J.-Ph., Tran M.Q., Guss W.C., Temkin R.J.,“Novel linear analysis for a gyrotron oscillator based on a spectral approach,” Physics of Plasmas, 23(2016) 043101. DOI: 10.1063/1.4945611.
http://scitation.aip.org/content/aip/journal/pop/23/4/10.1063/1.4945611
Kim D., Kim S.G., Sawant A., Yu D., Choe M.S., Choi E.M., “Study on statistical breakdown delay timein argon gas using a W-band millimeter-wave gyrotron,” Physics of Plasmas, 23 (2016) 043505. DOI:
10.1063/1.4945749.
http://scitation.aip.org/content/aip/journal/pop/23/4/10.1063/1.4945749
Ümit Akbey, Hartmut Oschkinat, “Structural biology applications of solid state MAS DNP NMR,” Journalof Magnetic Resonance, Available online 11 April 2016, ISSN 1090-7807, DOI:
10.1016/j.jmr.2016.04.003.
http://www.sciencedirect.com/science/article/pii/S109078071630009X
Baghel G.S., Kartikeyan M.V., "Extended RF Behavior of a 77/154 GHz, 0.5 MW Continuous Wave
Gyrotron," IEEE Trans. on Electron Devices (2016) 6 pp. DOI: 10.1109/TED.2016.2550609.
http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=7457242&isnumber=4358746
Liu Y.Q., Kong L.B., Du C.H., Liu P.K., "A Terahertz Electronic Source Based on the Spoof Surface
Plasmon With Subwavelength Metallic Grating," IEEE Trans. Plasma Science, (2016) 8 pp.

DOI: 10.1109/TPS.2016.2556319
http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=7465813&isnumber=4360151
Kalaria P., et al., "A fast frequency step-tunable 236 GHz gyrotron design for DEMO," 2016 German
Microwave
Conference(GeMiC),
Bochum,Germany(2016)
377-380.
DOI:
10.1109/GEMIC.2016.7461635.
http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=7461635&isnumber=7461526
Seok Kim, Young-Pyo Hong, Jong-Won Yang, and Dong-Joon Lee, "Two-tier calibrated electro-optic
sensing system for intense field characterization of high-power W-band gyrotron," Opt. Express, 24 (10)(2016)10547-10555. DOI: 10.1364/OE.24.010547.
https://www.osapublishing.org/oe/abstract.cfm?uri=oe-24-10-10547
Zhao Q. et al., "Investigation of the Influence of Electron Beam Quality on the Operation in 0.42-THz
Second Harmonic Gyrotron," IEEE Trans. Plasma Science, 44 (5) (2016) 749-754. DOI:
10.1109/TPS.2016.2551734.
http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=7458891&isnumber=7466400
Donghui Xia, Mei Huang, Zhijiang Wang, Feng Zhang, Ge Zhuang, “Integral staggered point-matching
method for millimeter-wave reflective diffraction gratings on electron cyclotron heating systems,” Fusion
Engineering and Design, 108 (2016) 55-59. DOI: 10.1016/j.fusengdes.2016.04.038.
http://www.sciencedirect.com/science/article/pii/S0920379616303295
Luqi Zhang, Yanyu Wei, Bing Wang, Wenan Shen, Jin Xu, Yubin Gong, and Gun-Sik Park “Investigationof 0.38 THz backward-wave oscillator based on slotted sine waveguide and pencil electron beam,”
Physics of Plasmas, 23 (2016) 033111. DOI: 10.1063/1.4943410.
http://scitation.aip.org/content/aip/journal/pop/23/3/10.1063/1.4943410
Guoxiang Shu, Wenlong He, Liang Zhang, Huabi Yin, Cros, A.W., Phelps A.D.R.,” Preliminary design ofa G-band extended interaction oscillator driven by a sheet electron beam', IET Conference Proceedings(2016) 3. DOI: 10.1049/ic.2016.0012.
http://digital-library.theiet.org/content/conferences/10.1049/ic.2016.0012
Yin H., Cross A.W., Zhang L., He W., Bowes D., Ronald K., Phelps A.D.R., “Compact millimetre wave
and terahertz radiation sources driven by pseudospark-generated electron beam”, IET Conference
Proceedings (2016) 9. DOI: 10.1049/ic.2016.0018.
http://digital-library.theiet.org/content/conferences/10.1049/ic.2016.0018
He W., Donaldson C.R., Zhang L., McElhinney P., Yin H., Garner J.R., “Upgrade of a W-band Gyro-TWA
for cloud radar application,” IET Conference Proceedings (2016) 10. DOI: 10.1049/ic.2016.0019.
http://digital-library.theiet.org/content/conferences/10.1049/ic.2016.0019
Caspers Ch., da Silva P.F., Soundararajan M., Haider, M.A., Ansermet, J.-Ph., “Field and frequency
modulated sub-THz electron spin resonance spectrometer,” APL Photonics, 1 (2016) 026101. DOI:
10.1063/1.4945450.

http://scitation.aip.org/content/aip/journal/app/1/2/10.1063/1.4945450
Zhigang He, Weiwei Li, Yalin Lu, Qika Jia, and Lin Wang, “Harmonics generation of THz wakefield freeelectron laser from dielectric loaded waveguide excited by direct current electron beam,” Optics Letters(received 01/21/2016; accepted 04/18/2016; posted 04/19/2016; Doc. ID 257883).
https://www.osapublishing.org/ol/upcoming_pdf.cfm?id=257883

Zhang L., He W., Donaldson C.R., Cross A.W., “Bandwidth Study of the Microwave Reflectors with
Rectangular Corrugations", Journal of Infrared, Millimeter, and Terahertz Waves (2016) 11 pp. DOI:
10.1007/s10762-016-0280-y.
http://link.springer.com/article/10.1007%2Fs10762-016-0280-y
Nusinovich G.S., Luo L., Liu, P.-K., “Linear theory of frequency pulling in gyrotrons,” Physics ofPlasmas, 23 (2016) 053111. DOI: 10.1063/1.4949762.
http://scitation.aip.org/content/aip/journal/pop/23/5/10.1063/1.4949762
Avraham E., Ben-Moshe R., Pilossof M., Einat M., "Frequency-Replaceable Ferroelectric Cathode
Gyrotron for the Entire Ka-Band Using Replaceable Resonator," IEEE Trans. Electron Devices, vol. 63,
no. 5 (2016) 2097-2103. DOI: 10.1109/TED.2016.2536758.
http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=7433440&isnumber=7457179
C.

Patents“Methods and systems for non-invasive measurement of blood glucose concentration by transmission of
millimeter waves through human skin.” United States Patent Application 2016005117.1. Publication Date:
02/25/2016. Inventors: Pikov, Victor (PASADENA, CA, US), Siegel, Peter H. (LA CANADA, CA, US.
http://www.freepatentsonline.com/y2016/0051171.html“Low reflectance high power RF load.” United States Patent 9252472. Publication Date: 02/02/2016.
Inventors: Ives, Lawrence R. (San Mateo, CA, US), Mizuhara, Yosuke M. (Palo Alto, CA, US).
http://www.freepatentsonline.com/9252472.html“Compact magnet system for a high-power millimeter-wave gyrotron.” United States Patent Application
20160078992. Publication Date: 03/17/2016. Inventors: Barnett, Larry R. (Normandy, TN, US).
http://www.freepatentsonline.com/y2016/0078992.html“THz gyrotron.” Chinese patent CN103632908 B. Publication Date: 23/12/2015.
https://www.google.bg/patents/CN103632908A?hl=bg&dq=gyrotron&cl=en“Compact magnet system for a high-power millimeter-wave gyrotron.” United States Patent
US20160078992 A1. Publication Date: 17/03/2016. Inventors: Larry R. Barnett.
https://www.google.bg/patents/US20160078992?dq=gyrotron&hl=bg&sa=X&ved=0ahUKEwid7OHYnu
PMAhVIthQKHdpJAJQQ6AEIKTAB“Corrugated components for millimeter, submillimeter and terahertz waves.” EP Patent EP 2649681 B1.
Publication Date: 30/12/2015. Inventors: A. Macor. https://www.google.bg/patents/EP2649681B1?cl=en

NEW BOOKS
A. S. Gilmour, Jr., Klystrons, Traveling Wave Tubes, Magnetrons, Crossed-Field Amplifiers, andGyrotrons (Artech Books).Now available as an e-book:
http://www.asgilmourjr.com/
Clive Poole and Izzat Darwazeh, Microwave Active Circuit Analysis and Design,
1st Edition (Elsevier, 2015) Print ISBN 9780124078239 Electronic ISBN 9780124079373.
https://www.elsevier.com/books/microwave-active-circuit-analysis-and-design/poole/978-0-12-407823-9
Balamati Choudhury, Arya Menon, Rakesh Mohan Jha, Active Terahertz Metamaterial for Biomedical
Applications (Springer Briefs in Electrical and Computer Engineering, 2016)
ISBN: 978-981-287-792-5 (Print) 978-981-287-793-2 (Online)
http://link.springer.com/book/10.1007/978-981-287-793-2
Balamati Choudhury, Bhavani Danana, Rakesh Mohan Jha, PBG based Terahertz Antenna for
Aerospace Applications (Springer Briefs in Electrical and Computer Engineering, 2016)
ISBN: 978-981-287-801-4 (Print) 978-981-287-802-1 (Online)
http://link.springer.com/book/10.1007/978-981-287-802-1
Boon Kok Tan, Development of Coherent Detector Technologies for Sub-Millimetre Wave
Astronomy Observations (Springer Theses,2016)
ISBN: 978-3-319-19362-5 (Print) 978-3-319-19363-2 (Online)
http://link.springer.com/book/10.1007/978-3-319-19363-2
John Lekner, Theory of Reflection: Reflection and Transmission of Electromagnetic, Particle andAcoustic Waves (Springer Series on Atomic, Optical, and Plasma Physics,, Vol. 87, 2016)
ISBN: 978-3-319-23626-1 (Print) 978-3-319-23627-8 (Online)
http://link.springer.com/book/10.1007/978-3-319-23627-8

NEWS FROM THE NET (OUR BROADER HORIZONTS)
Terahertz radiation has a great potential for Medical Advancements
During the 7th International THz-Bio Workshop, which was held in Seoul, Korea on April 6-8 the latest
research advancements on the beneficial biological effects of terahertz radiation were presented anddiscussed (http://www.thzbioworkshop2016.com/). The main topic this year was: “THz-Bio: Challenges
and Opportunities for Industrialization.” For more detail, please visit:
http://www.businesskorea.co.kr/english/news/sciencetech/14571-terahertz-paradigm-terahertz-radiationshows-great-promise-medical
Light-induced superconductivity
Intense light pulses irradiating a sample of K3C60 result in dramatic changes of its high-frequency(terahertz) conductivity.
Demsar Jure, “Emergent phenomena: Light-induced superconductivity,” Nature Physics, vol.12, no. 3(2016) 202-203. DOI: 10.1038/nphys3687.
http://www.nature.com/nphys/journal/v12/n3/full/nphys3687.html
Researchers from Brown University's School of Engineering have developed a new metal lens forfocusing terahertz radiation
An array of stacked 32 metal plates, each 100 microns thick with a 1-millimeter space between each plateis used to make a novel lens for focusing terahertz radiation. The new device has several advantages overthe existing Teflon lenses and can easily be calibrated for specific terahertz wavelengths by changing the
distance between the plates.
Mendis R., Nagai M., Wang Y., Karl N., Mittleman D.M., Terahertz Artificial Dielectric Lens, Scientific
Reports, vol. 6 (2016) 23023. DOI: 10.1038/srep23023. Open Access:
http://www.nature.com/articles/srep23023
3-D printer creates a terahertz lens that could be used for security imaging and biomedical research
A 3D terahertz gradient-refractive index lens designed by transformation optics is achieved by fabricating“woodpile” structures with varying dimensions of subwavelength dielectric unit cells using the projection
microstereolithography technique. Both simulation and experimental investigations confirm that the lensdelivers an imaging resolution very close to the diffraction limit over a frequency range from 0.4 to 0.6
THz.
http://onlinelibrary.wiley.com/doi/10.1002/adom.201600033/abstract‘Color’ photography at terahertz frequencies
The developed novel solid-state-based sensors can be operated at room temperature for spectroscopic THz
imaging purposes. THz photographs at different frequencies have been obtained demonstrating that it ispossible to determine the chemical composition of packaged samples if their spectra are known a priori.
http://spie.org/newsroom/6285-color-photography-at-terahertz-frequencies
New compact terahertz radiation source that operates at room temperature continuous wave (CW)
for sensing applications.
The device is based on nonlinear mixing in quantum cascade lasers. The system achieved roomtemperature CW emission at 3.41 THz with and output power up to 14 μW.
Lu Q., Wu D., Sengupta S., Slivken S., Razeghi M., Room temperature continuous wave, monolithic
tunable THz sources based on highly efficient mid-infrared quantum cascade lasers, Scientific Reports,
vol. 6 (2016) 3595. DOI: 10.1038/srep23595. Open Access:
http://www.nature.com/articles/srep23595
Physicists discover new state of the water molecule
The novel, so-called tunneling form of water has been created in narrow channels in beryl. It is believed,
however, that this state probably happens often in nature but it is difficult to be detected with the available
techniques.
http://physicsworld.com/cws/article/news/2016/may/06/physicists-discover-new-state-of-the-watermolecule
See the original paper: Kolesnikov A.I., Reiter G.F., Choudhury N., Prisk T.R., Mamontov E., Podlesnyak
A., Ehlers G., Seel A.G., Wesolowski D.J., Anovit, L., “Quantum Tunneling of Water in Beryl: A New
State of the Water Molecule,” Phys. Rev.
Lett.,
116(2016) 167802.
DOI:
10.1103/PhysRevLett.116.167802.
http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.116.167802
UMD Researchers Make Breakthrough in Terahertz Technology
A University of Maryland (UMD) research team, in collaboration with Monash University and the UnitedStates Naval Research Laboratory, has invented a Tunable Large Area Hybrid Metal-Graphene Terahertz
Detector, an innovation based upon a successful demonstration of plasmonic resonance in graphene
micro-ribbons that are connected to metal electrodes, offering a critical step toward practical grapheneterahertz optoelectronic devices. The invention has been nominated by UMD’s Office of Technology
Commercialization for the Invention of the Year award in the Physical Sciences category.
http://www.scienceandtechnologyresearchnews.com/umd-researchers-make-breakthrough-terahertztechnology/