bluuebunny/crossref_metadata_2025 huggingface dataset:
Reconquistar los derechos humanos por la Unión Europea
Authors: Fernández Liesa Carlos R.
Published: January 2021

Este trabajo es una reflexión sobre los grandes desafíos de la UE en Derechos humanos. Se parte del papel histórico de Europa en los derechos humanos. Proponemos algunas medidas que se podrían adoptar para recuperar esa función. Asimismo, se identifican los principales problemas y las posibles soluciones. Por ejemplo, mantener la utopía de la modernidad, fortalecer la Unión social, ir contra el populismo y el nacionalismo, apoyar la sostenibilidad y la agenda 2030, entre otros.
Las primitivas recepciones de la televisión en españa: la British Broadcasting Corporation (BBC) se sintonizó antes que televisión española (TVE) en Asturias.
Authors: Martín-Antón Javier
Published: January 2021

The present investigation on the history of television and its territorial implantation has brought to light some singularities and has highlighted inaccuracies that have been considered valid for more than half a century. The procedure used has been based on the review and exhumation of sources and on obtaining unpublished testimonies. To do this we have focused on a province — Asturias, Spain — for which we provide a new chronology that includes forgotten and/or unknown events up to the present. Our contribution supposes, on the one hand, a historical review of the implementation of television that provides a correction and specification of the events necessary to avoid errors in future teaching and research work and, on the other hand, an invitation to review the television phenomenon and its chronology in other regions in which there may have been similarities with the findings that we present here
The clinical impact of hydroresponsive dressings in dynamic wound healing: Part I
Authors: Sterpione Francois , Mas Karine , Rippon Mark , Rogers Alan , Mayeux Georges , Rigaudier Florian , Chauvelot Pierre , Robilliart Ludovic , Juhel Christine , Lecomte Yann
Published: January 2021

Objective:

Management of any wound, either acute or hard-to-heal, might involve the use of multiple and different wound dressings in its treatment. This approach is necessary to overcome the myriad of clinical challenges the wound presents, as well as any underlying comorbidities that might affect the clinical outcomes. This article describes the clinical effectiveness of a coordinated wound dressing treatment regimen.

Method:

This was an open-labelled non-comparative study involving patients with a variety of hard-to-heal and acute wounds of differing levels of severity, but all of which required removal of devitalised tissue to enable wound healing to progress. The first phase used the hydroresponsive wound dressing HydroClean (PAUL HARTMANN AG, Germany). The PUSH score was used as the primary measurement parameter.

Results:

A total of 86 patients (38 male/48 female), with a mean age of 67.7±21.7 years, took part in the study. The results showed that the hydroresponsive dressing was effective in managing wound exudate production and promoting wound cleansing and debridement, supporting good wound bed preparation. Wound closure was observed in 16/86 (18.6%) wounds at the end of the study (20 weeks). This enabled clinicians to switch to alternative wound dressings to promote subsequent clinical healing outcomes.

Conclusion:

In this study, the hydroresponsive wound dressing was highly effective in preparing a clean wound bed such that the next stage of wound healing could be supported.
Construction of Students' Mathematical Knowledge in the Zone of Proximal Development and Zone of Potential Construction
Authors: Kusmaryono Imam , Jupriyanto Jupriyanto , Kusumaningsih Widya
Published: January 2021

This article highlights the main ideas that underlie the differences in potential pragmatic knowledge constructs students experience when solving problems, between the zone of proximal development (ZPD) and the zone of potential construction (ZPC). This qualitative research is based on a phenomenological approach to finding the meaning of things that are fundamental and essential from the ZPD and ZPC phenomena. Researchers observed mathematics learning by a teacher on 24 fourth-grade students who were divided into groups A (high IQ) and B (low IQ). Data collection through tests, observation, and interviews. While the validity of the data is done through triangulation of methods and triangulation of sources. The results showed that students of the Upper (A) group had high IQ but small ZPD and ZPC. In contrast, students in the Lower (B) group have low IQ but large ZPD and ZPC. This result means that intelligence (IQ) is measured not only logically-mathematically but also in the verbal-linguistic and spatial-visual fields. The conclusion is that there are differences in the construction of students' knowledge in the learning zone. This difference occurs because the knowledge constructs that the students have previously had an effect on the accommodation process of the schemes that students have built while in the proximal development zone (ZPD) where scaffolding works. Meanwhile, the potential construction zone (ZPC) is not sufficient to describe the real development of students. However, it only reflects what students have accomplished.
Development of Indonesian Language Text Books with Multiculturalism and Character Education to Improve Traditional Poetry Writing Skills
Authors: Winarni Retno , Slamet St Y , Syawaludin Ahmad
Published: January 2021

This research aims to develop Indonesian Language textbooks with multiculturalism and character education for traditional poetry writing learning. This research uses a research and development approach until the discovery of a proper textbook. The subjects involved in this study were 101 elementary school fourth-graders, 33 teachers, and 2 Indonesian language and literature learning experts. Data analysis techniques at the need analysis stage through interactive models, and data analysis at the product testing stage using quantitative techniques with non-independent t-test statistics. Preliminary studies found that teachers and students needed creative writing skills textbooks developed by integrating the values of multiculturalism and character education. Textbook development referred to aspects of content, language, presentation, and graphics. Limited textbook product testing using t-test showed that t-obtained= -4,265 and t-table on α = 5 % is 2,064, so H0 is rejected. Broad testing also resulted in    t-obtained= -6,426 and t-table = 2,004, so it can be decided that H0 is rejected. Students' traditional poetry writing skills after learning using textbooks are better than before learning using textbooks. Thus it is concluded that the textbooks developed are inferred worthy of use by teachers and students to improve their writing skills in elementary school.
Attenuation coefficient estimation in Fourier-domain OCT of multi-layered phantoms
Authors: Ghafaryasl Babak , Vermeer Koenraad A. , Kalkman Jeroen , Callewaert Tom , de Boer Johannes F. , van Vliet Lucas J.
Published: January 2021

Optical properties, such as the attenuation coefficients of multi-layer tissue samples, could be used as a biomarker for diagnosis and disease progression in clinical practice. In this paper, we present a method to estimate the attenuation coefficients in a multi-layer sample by fitting a single scattering model for the OCT signal to the recorded OCT signal. In addition, we employ numerical simulations to obtain the theoretically achievable precision and accuracy of the estimated parameters under various experimental conditions. Finally, the method is applied to two sets of measurements obtained from a multi-layer phantom by two experimental OCT systems: one with a large and one with a small Rayleigh length. Numerical and experimental results show an accurate estimation of the attenuation coefficients when using multiple B-scans.
FDTD analysis of a tunable THz plasmonic metasurface
Authors: Maleki Ali , Jaber Ahmed , Gingras Lauren , Reshef Orad , Dolgaleva Ksenia , Boyd Robert W. , Ménard Jean-Michel
Published: January 2021

We investigate active tunability of plasmonic filters on silicon with FDTD. Injecting free-charge carriers changes the dielectric properties of the substrate and bleaches the plasmonic resonance while inducing a blueshift and linewidth broadening.
Ultrafast Polarization Twisting using Chip-scale Metasurfaces
Authors: Chen Lu , Zhu Wenqi , Song Junyeob , Huo Pengcheng , Strait Jared , Zhang Cheng , Zhou Wei , Lezec Henri J. , Xu Ting , Agrawal Amit
Published: January 2021

Dielectric metasurfaces enable control of the temporal profile of large bandwidth, near-infrared femtosecond pulses. Using this approach, we demonstrate shaping of the time-domain polarization state within a single pulse.
Detecting and quantifying pulse train instabilities with self-calibrating d-scan
Authors: Alonso Benjamín , Torres-Peiró Salvador , Romero Rosa , Guerreiro Paulo T. , Almagro-Ruiz Azahara , Muñoz-Marco Héctor , Pérez-Millán Pere , Crespo Helder
Published: January 2021

We apply the self-calibrating d-scan technique to quantify the pulse train instabilities in a fiber laser with supercontinuum generation in a photonic crystal fiber (PCF). Using an all-normal dispersion PCF, stable 15-fs pulses are measured.
Measuring the size and zeta potential of nanoparticles with a salt gradient
Authors: Rasmussen Martin K. , Pedersen Jonas N. , Marie Rodolphe
Published: January 2021

We present a nanofluidic device that traps nanoparticles with a salt gradient. From optical microscopy images of the trapped particles, we find the size and surface charge of individual and ensembles of particles.
Nonlinearity mitigation dependence on modulation format in phase-sensitively amplified fiber links
Authors: Vijayan Kovendhan , He Zonglong , Foo Benjamin , Karlsson Magnus , Andrekson Peter A
Published: January 2021

We show that the transmission reach increase with phase-sensitive amplifiers (PSAs) compared to phase-insensitive amplifiers is significantly enhanced for higher-order modulation formats in single-channel, single-span transmission experiments.
Self-Generation of Two-Frequency Molecules via the Raman Effect
Authors: Willms Stephanie , Bose Surajit , Morgner Uwe , Babushkin Ihar , Melchert Oliver , Demircan Ayhan
Published: January 2021

We demonstrate novel types of heteronuclear soliton molecules. We investigate properties of steady-state solutions in different systems, propagation dynamics under perturbations, trapping behavior, and various generation possibilities.
Snap-shot fringe pattern enhancement using period-guided bidimensional empirical mode decomposition
Authors: Gocłowski Paweł , Trusiak Maciej
Published: January 2021

We present an automatic, robust and effective algorithm, named period-guided bidimensional empirical mode decomposition, for fringe pattern enhancement. It solves the mode mixing problem and extracts complete fringe term in a single (first) decomposition component.
Generation of a Space-Time Pulse with a Controllable Group Velocity as a Function of Distance Utilizing Classical Entanglement by Combining Multiple Frequencies Each Containing Multiple Laguerre Gaussian Modes
Authors: Zou Kaiheng , Zhao Zhe , Song Hao , Pang Kai , Minoofar Amir , Su Xinzhou , Zhou Huibin , Zhang Runzhou , Song Haoqian , Hu Nanzhe , Liu Cong , Tur Moshe , Willner Alan E.
Published: January 2021

We simulate the generation of a space-time pulse with a controllable group velocity by classical entanglement of frequencies and multiple LG modes. Group velocities greater and smaller than the speed of light are achieved.
Leidenfrost Evaporation-Assisted Ultrasensitive Surface-Enhanced Raman Spectroscopy
Authors: Song Junyeob , Cheng Weifeng , Nie Meitong , He Xukun , Nam Wonil , Cheng Jiangtao , Zhou Wei
Published: January 2021

Leidenfrost evaporation-assisted Surface-enhanced Raman spectroscopy on hierarchical plasmonic micro/nanostructures provides fast ultrasensitive biochemical detection methods beyond the diffusion limit.
Extracting the Dimensionless Operating Parameters of an Optically-Injected Semiconductor Laser
Authors: Herrera Daniel J. , Kovanis Vassilios , Lester Luke F.
Published: January 2021

An optically-injected semiconductor laser is characterized with no prior knowledge of the physical design parameters. Employing the two Hopf bifurcation points at zero-detuning and Hopf-Saddle-Node point, its operating parameters are extracted.
Measuring the non-uniformity of a liquid-crystal on silicon spatial light modulator with light out of the operation range
Authors: Marco David , Vargas Asticio , del Mar Sánchez-López María , Moreno Ignacio
Published: January 2021

A technique to derive the spatial deformation of a liquid-crystal on silicon spatial light modulator based on a self-interference effect, generated when it is illuminated with a wavelength far from the operation range, is presented.
Design and Calibration of a Radiation-Pressure Based Laser Power Meter and Force Sensor
Authors: Cripe Jonathan , Spidell Matthew , Shaw Gordon
Published: January 2021

We describe the calibration of a radiation-pressure based laser power meter and force sensor which provides a metrological link between mass & force and laser power at 1 W and 10 nN scales.
Multi-Analyte Detection Employing Internal and External Sensing Approach
Authors: Mashrafi Md. , Haider Firoz , Aoni Rifat Ahmmed , Haider Rakib , Ahmed Rajib
Published: January 2021

A combination of internal and external sensing approach based plasmonic sensor is proposed to detect multiple analytes simultaneously. The sensor shows the maximum wavelength and amplitude sensitivities of 12,000 nm/RIU and 807 RIU-1, respectively for xpolarized mode.
5G Fronthaul Enabled by WDM Radio-over-Fiber
Authors: Pandey Gaurav , Choudhary Amol , Dixit Abhishek
Published: January 2021

We propose a low-cost DML-based hybrid fiber-wireless WDM radio-over-fiber transmission system for 5G fronthaul networks with resource allocation flexibility under different traffic loads and demonstrate it with a proof-of-concept experiment.
Free-Space Optical ON-OFF Keying Communications with Deep Learning
Authors: Lohani Sanjaya , Savino Nicholas J. , Glasser Ryan T.
Published: January 2021

We design a deep learning assisted end to end free-space optical ON-OFF Keying communications system, and demonstrate its efficacy in significantly lowering the bit error rate, while requiring no knowledge of the channel state information.
Deep-learning for Multi-Parameter Luminescence Sensing: Demonstration of dual Sensor
Authors: Venturini Francesca , Michelucci Umberto , Baumgartner Michael
Published: January 2021

The determination of multiple parameters via luminescence sensing is of great interest for many applications in different fields, like biosensing and biological imaging, medicine, and diagnostics. The typical approach consists in measuring multiple quantities and in applying complex approximated mathematical models to characterize the sensor response from the relevant parameters. Here a new approach for luminescence sensors is proposed, which allows the determination of multiple physical parameters simultaneously from a single measurement. The new approach is demonstrated by a dual oxygen concentration and temperature sensor. These results are achieved using multi-task deep-learning neural networks.
MMI-based compact spectrometer
Authors: Bhattarai Pravin , Bohora Sanket , Maharjan Rijan , Crowe Iain , Dhakal Ashim
Published: January 2021

We introduce a compact spectrometer based on a 1×16-multimode interference splitter partially filled with random holes. The spectral resolution for this high-bandwidth, on-chip device is found to be at least ~0.04 nm.
Opto-Thermomechanical Nanoprinting and Nanorepairing
Authors: Zhao Chenglong
Published: January 2021

A new printing method based on opto-thermomechanical (OTM) transfer of nanoparticles with a continuous-wave laser is introduced. The OTM method allows for not only additive nanoprinting but also nanorepairing.
Two Photon Lithography of Plasmonic Gratings in Metal Polymer Composite Resin
Authors: Jaiswal Arun , Chaudhary R.P. , Saxena Sumit , Shukla Shobha
Published: January 2021

We present fabrication of subwavelength plasmonic gratings by two photon enabled simultaneous photopolymerization and photoreduction of gold doped acrylate resin. The results indicate the progress towards realization of 3D plasmonic metamaterials.
A Cavity Coupled Conical Shape Gold Nanohole Array Fiber-Tip Plasmonic Sensor
Authors: Guo Hong , Guo Junpeng
Published: January 2021

An array of conical shape gold nanoholes with coupled nanocavities is fabricated on an fiber tip. The device is used as an index-refraction sensor and exhibits a larger sensitivity with the new plasmon resonance nanostructure.
Approaching the Tsirelson bound with a Sagnac source of polarization-entangled photons
Authors: Chapman Robert J. , Außerlechner Sandra , Frick Stefan , Prilmüller Maximilian , Weihs Gregor
Published: January 2021

High-fidelity polarization-entangled photons are a powerful resource for quantum communication, distributing entanglement and quantum teleportation. Sagnac sources offer intrinsic phase stability, compact footprint and high collection efficiency as no generated photons are discarded. To-date, however, Sagnac sources have failed to reach the Bell-CHSH S parameter values measured with traditional cone sources. Here, we present a Sagnac polarization-entangled source with

2

2

−
S
=
(
5.65
±
0.57
)
×

10

−
3

, over an order of magnitude closer to the Tsirelson bound than previously reported. Our source records 0.995 ± 0.001 concurrence, 0.9974 ± 0.0007 fidelity to an ideal Bell state and is around two orders of magnitude brighter than the highest S parameter cone source. By studying errors in Sagnac sources, we identify that multi-pair generation and the nonlinear crystal position have the greatest impact on the S parameter in our experiment. We provide a clear pathway of improving Sagnac sources that could enable the highest S parameters measured to-date.
Decay-Free Radiation in Uniform Grating Couplers with Exceptional Points
Authors: Yulaev Alexander , Kim Sangsik , Li Qing , Westly Daron A. , Roxworthy Brian J. , Srinivasan Kartik , Aksyuk Vladimir
Published: January 2021

We report a grating coupler capable to efficiently project a constant-intensity free-space beam due to exceptional points in a photonic band diagram. Our device enables a new route to project arbitrarily wide free-space top-hat beams.
LDLS™ Powered Tunable Light Source with Far-UVC Output
Authors: Ye X. , Alfaris M. , Grube W. , Gustafson D. , Zhu H.
Published: January 2021

Tunable light source powered by LDLS™ with far-UVC output is proposed and evaluated. Experimental results of in-band fluxes, FWHM bandwidths between 200nm and 400nm, are presented.
Resolution Enhancement in Multi-Periodic Pattern Illumination Microscopy
Authors: Samanta Krishnendu , Sarkar Swagato , Joseph Joby
Published: January 2021

Multi-periodic pattern illumination microscopy is presented where illumination contains multiple spatial frequencies. A comparative study shows multi-periodic pattern delivers 4-fold resolution enhancement whereas sinusoidal pattern delivers 2-fold.
Observation of Anti-parity-time Symmetry on Chip
Authors: Fan Heng , Chen Jiayang , Zhao Zitong , Wen Jianming , Huang Yuping
Published: January 2021

We report an on-chip realization of non-Hermitian optics with anti-Parity-Time(Anti-PT) symmetry by constructing a fully-passive, nanophotonic platform consisting of three evanescently-coupled nanowaveguides.
Tuning the Coherence Group Velocity in Free Space
Authors: Yessenov Murat , Abouraddy Ayman F.
Published: January 2021

We introduce the concept of ‘coherence group velocity’, which is the speed of the peak of the coherence function and confirm experimentally that incorporating spatiotemporal spectral correlation into an incoherent field allows tuning its coherence group velocity in free space.
Design of Integrated Photonic Devices on SiC-on-Insulator (SiCOI) Platform for Quantum Applications
Authors: Wang Yanan , Jia Hao , Feng Philip X.-L.
Published: January 2021

Integrated photonic devices, including grating coupler, ridge waveguide, and microring resonator, are numerically investigated on a SiCOI platform. This work will provide valuable guidelines for realizing SiCOI integrated quantum photonic circuitry.
Blue gold nanoparticles contrast-enhanced multimodal Photoacoustic Microscopy and Optical Coherence Tomography for molecular imaging of choroidal neovascularization
Authors: Nguyen Van Phuc , Li Yanxiu , Henry Jessica , Qian Wei , Liu Bing , Zhang Wei , Qian Thomas , Wang Xueding , Paulus Yannis M.
Published: January 2021

We demonstrate a novel blue gold nanoparticle as a potential contrast agent for multimodal photoacoustic microscopy (PAM) and optical coherence tomography (OCT) imaging to distinguish choroidal neovascularization from the native retinal vessels in living rabbits.
Electronic Raman Scattering Calibration for Quantitative Surface-enhanced Raman Spectroscopy and Improved Biostatistical Analysis
Authors: Nam Wonil , Ren Xiang , Kim Inyoung , Agah Masoud , Zhou Wei
Published: January 2021

A new surface-enhanced Raman spectroscopy (SERS) calibration strategy towards quantitative analysis based on electronic Raman scattering (ERS) can improve label-free biostatistical analysis of living cancer cells and their drug efficacy study.
Anti-spoofing Face Recognition Using Infrared Structure Light
Authors: Sun Shengtao , Tian Yue , Tang Ying , Wu Ben
Published: January 2021

We demonstrate an anti-spoofing face recognition system that is able to differentiate real human face with 3D printed materials. Face images captured in infrared structure light are analyzed for surface materials and spatial structure.
Polarization-Preserving High-Reflector With Wavelength-Selective Diffraction
Authors: George Linu , Kumar Govind , Haldar Arpita , Vijaya R.
Published: January 2021

Polarization sensitivity of distributed Bragg reflectors on patterned surfaces is studied at 532 nm (outside the stopband) and 650 nm (within stopband). Our results demonstrate the polarization preserving nature as seen in coatings on smooth substrates.
Maximizing and Controlling the Degree of Local Chirality of Electromagnetic Fields
Authors: Neufeld Ofer , Tzur Matan Even , Cohen Oren
Published: January 2021

We show how to control, and maximize, a new intrinsic property of light: its degree of chirality. This property carries nonzero chirality density within the dipole approximation, and is highly useful for chiral light-matter interactions.
Robust Characterization of Optical Coupling between Tapered Fiber and Microresonator Modes
Authors: Vitullo Dashiell L. P. , Zaki Sajid , Jones D. E. , Sumetsky M. , Brodsky Michael
Published: January 2021

We demonstrate robust partially-automated characterization of evanescent coupling between a SNAP microresonator and a tapered optical fiber, and report coupling parameter profiles for two axial series along the taper’s longitudinal axis.
Full-Field Spectral-Domain Optical Coherence Microscopy for Snapshot Three-Dimensional Imaging
Authors: Iyer Rishyashring R. , Zurauskas Mantas , Cui Qi , Gao Liang , Smith R. Theodore , Boppart Stephen A.
Published: January 2021

We present a novel imaging setup for full-field spectral-domain optical coherence microscopy (OCM) that generates 3D complex-valued images of the scattered optical field with no moving parts for imaging biological sample dynamics, called Snapshot OCM.
Adaptive self-window-based optical information acquisition method for high dynamic target
Authors: Cao Ruimin , Wang Lihui , Fu Jian
Published: January 2021

Aiming at the problem of target loss caused by high-dynamic targets with unstable trajectories, the adaptive size of the self-window are performed based on the motion information to improve the stability of capturing targets.
Compact and Fabrication-Tolerant Single-Mode Polymer Waveguide Bends
Authors: Yu Shaoliang , Qiu Xiaoming , Zuo Haijie , Turduev Mirbek , Gu Tian , Hu Juejun
Published: January 2021

We propose and experimentally demonstrate a broadband, polarization-diverse compact bending design for low-index-contrast waveguides, where light is re-directed via total internal reflection on an air-trench quadratic reflector surface with insertion loss of 0.3 dB.
Quantitative second-harmonic generation imaging analysis based on fluid-dynamics measures
Authors: Salazar Coariti Adriana C. , Fabien Maurice , Guzman Johnny , Toussaint Kimani C.
Published: January 2021

2D pseudo-vector field maps are derived from second-harmonic generation images of bone. Measures adapted from fluid dynamics, such as enstrophy and tortuosity, quantitatively distinguish between images with and without Harvesian canals.
Miniaturized optical fluorescence microscopy system for parallel in situ imaging
Authors: Son Jeonghwan , Mandracchia Biagio , Jia Shu
Published: January 2021

Live cell fluorescence imaging have enriched image-based screening applications with microwell plates. Here, we propose a portable system by synchronizing miniaturized microscopies and show the performance of live cell imaging inside an incubator.
Arbitrary Biological Structure Imaging with Optical Imaging Interferometric Microscopy
Authors: Dey Preyom , Dankocsik Cristopher , Neumann Alexander , Jordan Ramiro , Brueck S. R.J.
Published: January 2021

A synthetic aperture microscopy technique with off-axis illumination is used to image an arbitrary biological sample. This method extends resolution <300nm with a 0.4 NA lens at 532nm (Conventional limit: ~665nm) for imaging arbitrary structures.
MEMS-based Angular and Spatial Light Modulation for Lidar and AR Displays
Authors: Hellman Brandon , Luo Chuan , Lee Ted Liang-tai , Takashima Yuzuru
Published: January 2021

High-speed, monolithic and MEMS-based lidar and a large pixel count micro display device for AR display optics leverages a Digital Micromirror Device with a pulsed illumination that simultaneous modulates light in space and angular domain.
Phase- and Transmission-Based Quantum-Enhanced Resonance Sensing at the Quantum Cramér Rao Bound
Authors: Dowran Mohammadjavad , Woodworth Timothy S. , Marino Alberto M.
Published: January 2021

We present and compare the ultimate sensitivity bounds with twin beams for resonance schemes based on changes in amplitude and phase of the probing light. Additionally, we present measurement strategies that saturate the ultimate bounds.
Scalable Genuine multipartite Entanglement with Parametric Amplifier Networks
Authors: Kim Saesun , Marino Alberto M.
Published: January 2021

We propose a scheme to generate scalable genuine multipartite continuous-variable entangled light using a parametric amplifier network. We show the presence of genuine quadripartite, hexapartite, and octapartite entanglement through a violation of the PPT criteria.
RF-photonic filters using coupled Brillouin-active waveguides in silicon
Authors: Gertler Shai , Kittlaus Eric A. , Otterstrom Nils T. , Rakich Peter T.
Published: January 2021

We demonstrate multi-pole RF-photonic filters in an integrated silicon platform. Using Brillouin interactions, the filters yield a narrow passband (~MHZ), high out-of-band rejection (70 dB), and can be tuned over a wide range (GHz).
Multi-domain Study of Oriented Thin-film Barium Titanate
Authors: Vasudevan Anupama T. , Selvaraja Shankar Kumar
Published: January 2021

We present a multi-domain and orientation simulation study of thin-film Barium Titanate. We present the effect of domains on the effective index change under the electric field for unpoled and poled thin films.
Analysis of the Phase-Locking Dynamics of a III-V-on-Silicon Ring Mode-Locked Laser
Authors: Van Gasse Kasper , Kuyken Bart , Verschelde Alexis , Giudici Massimo , Marconi Mathias , Huyet Guillaume
Published: January 2021

We present the detailed phase-locking analysis of a telecom hybrid III-V-on-silicon passively mode-locked laser with a ring cavity and quantum wells as active region. We use a stepped-heterodyne measurement to quantify the modal phase chirp and reconstruct the pulse envelop. With this technique we are able to identify regimes of transform-limited operation and we assess the degradation of the phase-locking when saturable absorber bias voltage is changed.
Opto-thermal Induced Flow Enables Faster Trapping in Nanoaperture Tweezers
Authors: Kotnala Abhay , Kollipara Pavana Siddhartha , Zheng Yuebing
Published: January 2021

Opto-thermal induced flow was integrated with nanoaperture tweezers to overcome the diffusion-limited trapping process, which resulted in more than an order-of-magnitude reduction in particle trapping time.
Optical Design of an Off-axis Three-mirror System Using Freeform Surfaces
Authors: Alvarado-Martínez J. J. , Granados-Agustín F. S. , Montiel S. Vázquez-y , Cornejo-Rodríguez A. A.
Published: January 2021

Optical design of an off-axis three-mirror system is proposed using free-form surfaces to correct spherical aberration, coma, astigmatism, and field curvature, with f-number 5, a FOV of 2 °, and diameter of 500 mm.
Tunable harmonic generation using hybrid metasurfaces incorporating phase-change chalcogenides
Authors: Zhu Muliang , Abdollahramezani Sajjad , Adibi Ali
Published: January 2021

We demonstrate a dynamic nonlinear metasurface incorporating GST that facilitates large spectral shift of the fundamental gap-surface plasmon resonance for enhanced linear resonance and third harmonic generation efficiency.
Super-Sensitive Quantum Metrology without Many-Photon Entanglement
Authors: Lahiri Mayukh , Erhard Manuel
Published: January 2021

We present a quantum metrological method that yields the Heisenberg limit without employing a squeezed or a many-particle entangled state. A separable state is used to probe the phase. Entanglement is disadvantageous for our method.
Nonlinear frequency mixing of photons for thermal-radiation engineering
Authors: Khandekar Chinmay , Yang Liping , Rodriguez Alejandro W. , Jacob Zubin
Published: January 2021

We show that the nonlinear frequency mixing of photons can be used to overcome the fundamental blackbody limit, and to introduce nontrivial statistics (g(2)≠2) and biphoton intensity correlations (at distinct frequencies) in thermal radiation.
Surface structuring comparison for multiple glasses using a pulsed CO2 laser
Authors: Ali Javed , Madsen Christi
Published: January 2021

Fabrication of ridge and trench structures in soda lime, borosilicate and fused silica glasses using pulsed CO2 laser are demonstrated. Effects of laser power, stage temperature on dimensions and quality of structures is discussed.
Magnetic Resonance using Synchronous Coherent Population Trapping Spectroscopy
Authors: Pati Gour , Grewal Raghwinder , Tripathi Renu
Published: January 2021

A new technique based on coherent population trapping is reported here for optical magnetometry using 87Rb vapor medium. Additional new resonances, thus created, can be used in determining the orientation of magnetic field.
Correction of CMOS-related noise in fluorescence microscopy
Authors: Mandracchia Biagio , Hua Xuanwen , Guo Changliang , Son Jeonghwan , Urner Tara , Jia Shu
Published: January 2021

CMOS cameras are very appealing for fluorescence microscopy but they suffer from high readout noise and fixed-pattern noise. We propose a non-iterative, fast, and unsupervised algorithm that erases camera-related noise without losing the quantitative information of fluorescence signal. Finally, we demonstrate the performance of the algorithm using different sensors, from low-cost CMOS chips to high-end sCMOS cameras.
Plotting the Stability Boundary of Cnoidal Waves in Microresonators
Authors: Courtright Logan , Qi Zhen , Menyuk Curtis R.
Published: January 2021

Previous dynamical methods to map the stability region boundary of cnoidal waves were semi-automatic due to sharp corners. We present a fully automatic method that accounts for corners due to Hopf bifurcations.
Analysis of rotational symmetry in SDM system based on OAM
Authors: Su Ce , Murshid Syed
Published: January 2021

The paper presents a new method to change the rotating behavior of OAM in the SDM communication system. Simulation and experimental data show that this technique gives a new perspective for OAM behavior inside the SDM system.
Third-order nonlinearities as a Function of the Pulse Width in Selected Deuterated Solvents
Authors: Fernandes Julia C. , Barbano E. C. , Siqueira J. P. , Misoguti L.
Published: January 2021

We have measured the third-order nonlinearities of six different normal and deuterated solvents by nonlinear ellipse rotation signal. We observed that the replacement of hydrogen to deuterium atoms reduces slightly the magnitude of the nonlinearities.
Propagation Features of Multibound Solitons in Optical Fiber With Anomalous Dispersion in the Telecom Range
Authors: Orekhov Ilya O. , Kudelin Igor S. , Dvoretskiy Dmitriy A. , Sazonkin Stanislav G. , Pnev Alexey B. , Karasik Valeriy E. , Denisov Lev K.
Published: January 2021

We experimentally demonstrated the pulse duration evolution of multi-bound solitons generated by a passively mode-locked all-fiber Er-doped laser during transmission through a standard telecommunication fiber with anomalous dispersion.
Axial power content and uncertainty principle for highly focused fields
Authors: Martínez-Herrero R. , Carnicer A. , Juvells I. , Sanz A. S.
Published: January 2021

A novel measure is proposed to estimate the size of the region where axial power content of highly focused fields mainly concentrates. This measure is established on the basis of a newly defined uncertainty principle.
Investigating Crown Flashes
Authors: Tufaile Alberto , Tufaile Adriana Pedrosa Biscaia
Published: January 2021

We are presenting the connection between the atmospheric phenomena known as Crown Flashes and light scattering in ferrofluids subjected to an external magnetic field, along with a model based on the Circle Map.
Frequency Shift in Two Symmetric Four-Wave Mixing in Rubidium Vapor
Authors: de Almeida A. A. C. , Alvarez A. S. , Vianna S. S.
Published: January 2021

Two symmetrical forward four-wave mixing processes in rubidium vapor present an opposing frequency shift. We model the effect with an anomalous refractive index due to the nonlinear interaction of the incident fields in the medium.
Temperature dependence of intermolecular correlations in bulk water and electrolyte solutions
Authors: Chen Y. , Dupertuis N. , Okur H. I. , Roke S.
Published: January 2021

Femtosecond elastic second harmonic scattering response of bulk H2O and D2O and their salt solutions show a decrease in the orientational order of water with increasing temperature, caused by nuclear quantum effects manifesting in hydrogen-bonding.
Nonlinear optics in waveguides doped with dimers of metal nanoparticles
Authors: Sánchez A. D. , Linale N. , Grosz D. F. , Fierens P. I.
Published: January 2021

We investigate the nonlinear response of waveguides doped with dimers of noble-metal nanoparticles using a simple effective model. Our results show a markedly distinctive response depending on the dimer gap.
Theoretical Study of a Cylindrical Graphene-based Localized Surface Plasmon Spaser
Authors: Prelat Leila , Cuevas Mauro , Passarelli Nicolás , Marún Raúl Bustos , Depine Ricardo
Published: January 2021

We consider a dielectric active wire coated with a graphene monolayer. Using rigorous electromagnetic methods, we present theoretical results which illustrate the non-radiative transfer between the active medium and the graphene localized surface plasmons.
Fully Flexible, Transparent Electrodes for Flexible Photovoltaic Applications
Authors: Walsh Kieran , Koh Chun , Murphy Conor , Russo Saverio , Craciun Monica F.
Published: January 2021

Graphene shows great promise as a replacement electrode material for flexible optoelectronic applications for its conductive, transparent and flexible properties. Here, we demonstrate the fabrication and application of functionalized graphene electrodes for flexible photovoltaics.
Transmitting multiple hybrid entangled states using a conventional single mode fiber
Authors: Nape Isaac , Liu Jun , Wang Qianke , Valles Adam , Wang Jian , Forbes Andrew
Published: January 2021

Abstract: We report a method for transmitting multiple spatial modes over a single mode fiber and free-space quantum channel
Analyzing the Expectation Value of the Hamiltonian for a Single Photon Gaussian Wave Packet State
Authors: Landazabal Daniel Fernando Borrero
Published: January 2021

We show a new analysis to address the problem of assigning a singular frequency and energy for the single photon state understood as a wave packet in the Quantum Field Theory formalism.
Characterization of Dephasing and Dissipating Effects in Hybrid Quantum Systems
Authors: Svozilík Jiří , Hidalgo-Sacoto Raúl , Arkhipov Ievgen I.
Published: January 2021

Open hybrid quantum systems are characterized via the generalized Wigner function and its corresponding features. Various hybrid quantum states, such as qubit-coherent states, are considered.
Coupling of random lasing and stimulated Raman scattering in a random media: Necessary conditions
Authors: Yashchuk Vasil P. , Smaliuk A.P. , Tikhonov E.A.
Published: January 2021

Random lasing (RL) in disordered active media can initiate stimulated Raman Scattering (SRS). We have found the optimal condition of SRS-RL coupling, which is perspective for Raman spectroscopy applications.
Increasing the correlation level of polarization entangled photon pairs generated by type-II SPDC in BBO
Authors: Holló Csaba Tamás , Erdei Gábor , Sarkadi Tamás
Published: January 2021

Entangled photon sources introduce phase shift between polarization states. Exceeding coherence length, coincidence rate drops for certain bases. Correlation is restored by phase compensation. Applying anisotropic retarders coincidence rate doubles.
Quadratic Platicons in χ(2) Optical Microresonators
Authors: Lobanov Valery E. , Kondratiev Nikita M. , Shitikov Artem E. , Galiev Ramzil R. , Bilenko Igor A.
Published: January 2021

We demonstrate numerically generation of two-color platicons in χ(2) microresonators via pump modulation or mode interaction for both SHG and optical parametric oscillations. Excitation conditions are revealed for discussed generation methods and medium parameters.
Fourier Ptychographic Imaging using a High Numerical Aperture Dome Illuminator
Authors: Aldabbagh Anas , Hasanzadeh Mojde , Breiby Dag W. , Akram Muhammad Nadeem
Published: January 2021

Fourier ptychography setup is developed using 61 LEDs installed on a spherical dome which illuminate the sample sequentially. The resolution is improved by 4.9 times by Fourier Ptychographic recovery.
Echocardiography images analysis by using Laguerre Gauss Transform
Authors: Amado Astrid L Villamizar , Gallo Silvana , Cap Nelly , Rabal Héctor , Tebaldi Myrian
Published: January 2021

We propose the generalization of the Laguerre Gauss Transform by using elliptical kernels in vortices metrology. This permits the generation of a family of very close vortices used to measure strain in cardiac ultrasound images.
Graphene-based multi-wavelength source for WDM-PON
Authors: Lopera Jhon A. , Arroyave Karen , Cárdenas Ana M. , Granada Torres Jhon J. , Zapata Juan D.
Published: January 2021

We propose a graphene-based multi-wavelength source for WDM-PON applications. The transmission performance is evaluated in comparison with a Flat Combs Generator based on a Mach-Zehnder-Modulator obtaining distance penalties less than 5 km at BER 10−9.
Microwave Photonic Waveform Generation Based on Multi-wavelength Control
Authors: Zhang Tianzhu , Wu Kan , Chen Jianping
Published: January 2021

We have proposed and verified a microwave photonic waveform generation scheme, which has the advantage of flexible reconfiguration in pulse repetition rate and pulse waveform.
Theoretical analysis of Influence of Pump-band Fraction and Pump-induced Loss for efficiency of Laser Diode Pumped CW Ti:sapphire Laser
Authors: Kawashima T. , Shibata M. , Kawato S.
Published: January 2021

we analyzed theoretically the efficiency of blue laser diode pumped Ti:sapphire laser. We theoretically improved efficiency of Ti:sapphire laser under Pump-band Fraction[1] and Pump-induced Loss[2] by high intenticy pumping.
Photonic Crystal Based Ultra-Sensitive Interferometric Nanometer Displacement Sensor
Authors: Sadhukhan Snehashis , Laha Arnab , Biswas Abhijit , Ghosh Somnath
Published: January 2021

A very high precision interferometric sensor with a resolution up to ~λ/1940 is reported, exploiting Talbot effect, revivals of the initial phase, oscillation in transverse momentum, multimode interference inside a hollow photonic bandgap waveguide.
All-dielectric double bar metasurface for colorimetric sensing
Authors: Son Hyunwoo , Kim Sun-Je , Lee Byoungho
Published: January 2021

We designed a colorimetric sensor based on all-dielectric double bar metasurface. A distinct color difference with respect to the index change could be achieved by double resonance excitation in the reflection spectra at different wavelengths.
All-optical switching in reflection-type metasurface with Pancharatnam-Berry phase
Authors: Choi Taewon , Sung Jangwoon , Lee Byoungho
Published: January 2021

We propose an optical switching metasurface in the designed visible region (680 nm) based on circularly polarized light using PB phase. It can generate holographic information encrypted by inserting control light.
Enhancement of Goos-Hänchen Shift near the Surface Plasmon Resonance in Subwavelength Gratings
Authors: Petrov Nikolai I. , Danilov Viktor A. , Popov Vladimir V. , Usievich Boris A.
Published: January 2021

Dependence of the GH shifts on the grating period and grating depth is investigated for different incident beam widths. High sensitivity of the GH shift on the incident angle of a light beam near the SPR is demonstrated.
Synthesis of Oval Nitrogen Doped Carbon Quantum Dots by Microwave Assisted Pyrolysis
Authors: Jaiswal Arun , Singh Gaurav Pratap , Shejale Kiran P. , Saxena Sumit , Shukla Shobha
Published: January 2021

Here we present single step, microwave assisted synthesis of nitrogen doped carbon quantum dots (N-CQDs). The varied proportions of the carbon and nitrogen precursors revealed the dependency of the photophysical properties on the surface states of N-CQDs.
Single-shot obstacles immune imaging with a scatterer
Authors: Liang Wenhai , Xi Teli , Li Wei , Wei Shijie , Liu Jietao , Fan Zengzeng , Sun Yangfan , Shao Xiaopeng
Published: January 2021

We demonstrate a new method for imaging a target through an opaque obstacle by employing a scatterer. Moreover, we evaluate the self-reconfiguration effect of stained speckles qualitatively.
The Influence of the Apodization Function on the Optical Needle
Authors: Fu Jian , Cao Ruimin , Wang Lihui
Published: January 2021

Based on vector diffraction theory, We theoretically demonstrate the focus depth of the optical needle is independent of the apodization function of the focusing objective by focusing a narrow annulus of azimuthally polarized beams.
Femtosecond laser inscribed all-in-core fiber structure for two-parameter sensing of temperature and curvature
Authors: Rong Zhao , Shu Xuewen
Published: January 2021

We have proposed a novel temperature and curvature two-parameter sensor. The sensor includes a fiber Bragg grating and an in-fiber Mach-Zehnder interferometer, which are integrally fabricated in SMF core by femtosecond laser direct writing.
Terahertz Electromagnetically Induced Transparency in Cesium Atoms
Authors: Bhushan Sumit , Slattery Oliver , Tang Xiao , Ma Lijun
Published: January 2021

We outline a proposal to realize Electromagnetically Induced Transparency (EIT) with the potential to store Terahertz (THz) optical pulses in Cesium atoms. Such a system, when experimentally realized, has a potential to make Quantum Communication possible with THz signals.
Identification of water fragmentation channels utilizing phase shifts under ω/2ω fs laser field irradiation
Authors: Kechaoglou Emmanouil , Ferentinou Katerina , Kaziannis Spyridon , Kosmidis Constantine
Published: January 2021

Distinction between two dissociative channels of H2O2+ releasing alike fragments of similar kinetic energy is achieved by utilizing strong near-IR ω/2ω asymmetric fields.
Imperfect Recollisions in Solid-State High-Harmonic Generation
Authors: Yue Lun , Gaarde Mette B.
Published: January 2021

The process of imperfect recollisions in solid-state high-harmonic generation is theoretically characterized: an electron and a hole recombine even when are spatially separated, leading to increased recollision energies of the interband harmonics.
High Contrast Probe Cleavage Detection
Authors: Dubrovsky Michael , Blevins Morgan , Boriskina Svetlana V. , Vermeulen Diedrik
Published: January 2021

We will discuss a new sensing modality, High Contrast Probe Cleavage Detection (HCPCD), for photonic biosensors that can be combined with recent developments in biochemistry, such as CRISPR Cas12/13 assays, to deliver highly sensitive and specific RNA and DNA detection.
Extraordinary Permittivity Modulation in Zinc Oxide for Ultrafast Dynamic Nanophotonics
Authors: Saha Soham , Dutta Aveek , DeVault Clayton , Diroll Benjamin T. , Schaller Richard D. , Kudyshev Zhaxylyk , Xu Xiaohui , Kildishev Alexander , Shalaev Vladimir M. , Boltasseva Alexandra
Published: January 2021

This work reports on the extraordinarily large optically-induced permittivity changes in zinc oxide thin films. Broadband, large reflectance modulation is demonstrated in both planar films and patterned resonators in the NIR wavelength range.
Characterization of Nonlinear, Relativistic Thomson Scattering
Authors: He C. Z. , Longman A. , Pérez-Hernández J. A. , Aginako J. I. A. , Fedosejevs R. , Roso L. , Hill W. T.
Published: January 2021

A new tool for characterizing relativistic Thomson scattering for intensities above 1018 W/cm2 will be presented.
Angular dependence of high-order harmonic generation in ZnTe crystals
Authors: Pusala Aditya , Faccialà Davide , Geetha Prabhash Prasannan , Musheghyan Mikayel , Crippa Gabriele , Ciriolo Anna G. , Devetta Michele , Assion Andreas , Cinquanta Eugenio , Stagira Salvatore , Vozzi Caterina
Published: January 2021

We investigate high-order harmonic generation (HHG) in ZnTe crystals driven by a mid-IR optical parametric amplifier as a function of the angle between the polarization direction of the driving laser field and the crystal axis.
Terahertz Control of Plasmon Induced Opacity in Photoexcited Metamaterial on GaAs
Authors: Mousavian Ali , Thompson Zachary J. , Lee Byounghwak , Bradley Alden N. , Lee Yun-Shik
Published: January 2021

Strong THz pulses instantly restore the sharp resonance of coupled plasmonic oscillators quenched by photoexcitation. The THz control of plasmon induced opacity is applicable to sensitive sensing and ultrafast switching in plasmonic devices.
Ultrafast Carrier Dynamics and Photoconductivity of the Chalcopyrite Crystals
Authors: Sooriyagoda Rishmali , Piyathilaka Herath P. , Zawilski Kevin T. , Schunemann Peter G. , Bristow Alan D.
Published: January 2021

We investigate temperature-dependent recombination mechanisms, decay times and AC photoconductivity of CdSiP2 nonlinear crystal using Time resolved terahertz spectroscopy. Carrier density and mobility are extracted by fitting photoconductivity with Drude-Smith model.
Modifying Silicon Surface With Single Femtosecond Laser Pulses at Near-Threshold Fluences in Different Media
Authors: Romashevskiy S. A.
Published: January 2021

Nanotopography features of the silicon surface presenting the first structural response to single femtosecond laser pulse action at minimally disruptive intensities in air and water are reported. Distinctive features at higher fluences are discussed.
Progress toward a VUV Raman spectrometer to detect pathogens with the samples in air
Authors: Dmitrovic Sanja , Molnar Brian , Kim Young Sik , Schumann David , Foley James , Shelley Jacob T. , Milster Tom D.
Published: January 2021

We describe progress toward detection of pathogens through Raman spectroscopy in the vacuum ultraviolet using the hydrogen Lyman alpha line at 121.6 nm.