bluuebunny/crossref_metadata_2025 huggingface dataset:
Ultrafast Nanoscale Photocurrent Control and Terahertz Emission in Hybrid Nanoplasmonic-2D Material Systems
Authors: Pettine Jacob , Shi Teng , Huang Yue , Kwock Kevin W.C. , Sirica Nicholas , Prasankumar Rohit P. , Chen Hou-Tong
Published: August 2022

Ultrafast optical control over nanoscale charge currents is increasingly important for emerging integrated optoelectronics and other applications. Here, we introduce versatile new hybrid nanoplasmonic-graphene sources of tailored picosecond photocurrents and demonstrate bias-free, continuously-polarization-rotatable terahertz emission.
5.6 mW average power THz source with 8 THz bandwidth at 540 kHz repetition rate based on organic crystal BNA
Authors: Mansourzadeh Samira , Vogel Tim , Omar Alan , Shalaby Mostafa , Cinchetti Mirko , Saraceno Clara J.
Published: August 2022

We demonstrate an ultra-broadband, high dynamic range THz source using organic crystal BNA, excited with a high-power, ultrafast Yb laser operating at 540 kHz repetition rate, reaching a record-high THz average power of 5.6 mW.
High-Power Excitation of Spintronic THz Emitter in the Back-Cooled Reflection Geometry
Authors: Vogel Tim , Omar Alan , Mansourzadeh Samira , Wulf Frank , Sabanés Natalia Martín , Müller Melanie , Seifert Tom , Weigel Alexander , Jakob Gerhard , Kläui Mathias , Pupeza Ioachim , Kampfrath Tobias , Saraceno Clara J.
Published: August 2022

We present THz generation in a back-cooled spintronic THz emitter in reflection geometry, excited with a high-average power Yb-laser providing up to 18.5 W at 400 kHz repetition rate. This allows us to increase the THz power.
Analysis of the Non-Injecting Mirror Concept for Feedback-Resistant High-Power Laser Diodes with a Multiphysics Model
Authors: Adams Martin , Holly Carlo , Rauch Simon , Traub Martin
Published: August 2022

A multiphysics model of a high-power external cavity laser diode is used to evaluate the impact of an electrically unpumped section near the front facet on its COD threshold when operated with misaligned optical feedback.
High Power CW Laser for Co-Packaged Optics
Authors: Zhou Wenjia , Zhu Yan , Wang Jeff , Moewe Michael , Zhu Ruichao , Zhao Wei , Rossin Victor , Liu Hongyu , Wang Jinsong , Zhu Ting , Yalamanchili Prasad , Pham Thang , Chen Ruby , Zeng Vincent , Stewart James
Published: August 2022

A high-power, Continuous-Wave (CW) laser prototype for External Laser Sources (ELSs) used in Co-Packaged Optics (CPO) applications is demonstrated at over 500mW ex-fiber, more than 10% efficiency.
2-D Optical Phased Arrays with Multilayer Antenna Elements and Off-Aperture Phase Control
Authors: Ashtiani Farshid , Aflatouni Firooz
Published: August 2022

A single-wavelength multilayer 2-D optical phased array (OPA) architecture with vertically-stacked nanoantennas, 3-D light distribution, and off-aperture phase control is reported. An 8x8 OPA with 3μm element-spacing and 23 beam steering range is demonstrated as a proof of concept.
Beam Forming in Integrated Optical Phased Array Enabled with Deep Neural Network
Authors: Nakai Makoto , Takai Isamu , Chung SungWon , Hashemi Hossein
Published: August 2022

The application of DNN to adaptively control phase in integrated optical-phased-array to form desired beams is proposed. Beam scanning with 0.1° step and accuracy of 0.02°, and beam forming with two independent peaks are demonstrated.
Tunable Frequency Filter Based on Twisted Bilayer Photonic Crystal Slabs
Authors: Lou Beicheng , Fan Shanhui
Published: August 2022

We introduce a tunable narrow-band-stop frequency filter based on twisted bilayer photonic crystal slabs in sub-wavelength regime. A desired lineshape is achieved by introducing additional uniform slabs. The filter can operate without diffraction loss and is polarization-independent.
Increasing Transmission Capacity of FBMC/OQAM-VLC Systems Enabled by Precoding and Adaptive Modulation
Authors: Chen Ming , Cai Yuxin , Li Ruizi , Yang Jing , Chen Qinghui , Liu Yi , Cheng Yun
Published: August 2022

We experimentally demonstrate the transmission of gigabit-class precoded/adaptively-modulated FBMC/OQAM signals in a blue-LED-based VLC system with 3-dB bandwidth of 70-MHz. The transmission capacity is improved by 150/450-Mbit/s with precoding/adaptive-modulation at the BER of 3.8e-3.
Highly Efficient Narrowband Terahertz Generation in PPLN Driven by a Two-Line Laser Source
Authors: Olgun H. T. , Tian W. , Cirmi G. , Ravi K. , Rentschler C. , Çankaya H. , Pergament M. , Hemmer M. , Matlis N. H. , Kärtner F. X.
Published: August 2022

We demonstrate record efficiencies of nonlinear optical-to-terahertz conversion near 1% for narrowband terahertz generation. This is achieved by strongly-cascaded difference frequency generation in periodically-poled LiNbO3 crystals using a novel multi-mJ laser source with two narrow spectral lines of tunable separation and pulse duration.
Data Mining for Terahertz Generation Crystals
Authors: Ho (Enoch) Sin-Hang , Valdivia-Berroeta Gabriel A. , Zaccardi Zachary B. , Pettit Sydney K. F. , Palmer Bruce Wayne , Lutz Matthew J. , Rader Claire , Hunter Brittan P. , Green Natalie K. , Barlow Connor , Wayment Coriantumr Z. , Harmon Daisy J. , Petersen Paige , Smith Stacey J. , Michaelis David J. , Johnson Jeremy A.
Published: August 2022

We discover, develop, and test new organic nonlinear optical crystals that produce intense pulses of terahertz radiation through a combination of data mining from Cambridge Structural Database and density functional theory calculations.
Electronic Control of Soliton Self-Mode Conversion
Authors: Kabagöz Havva Begüm , McCall Aidan , Ramachandran Siddharth
Published: August 2022

We demonstrate control of soliton self-mode conversion - a process capable of producing energetic ultrashort pulses - solely by chirping the pump, yielding nearly constant pulse energy, transform-limited sub-100-fs pulses in the 1000-1300 nm range.
Dispersion-compensated microring photon pair source design with configurable purity–pair rate–heralding efficiency tradeoff
Authors: Jabon Kenneth M. , Wang Imbert , Popović Miloš A.
Published: August 2022

We present a Si microring-based photon pair source design with tailored pump/signal/idler escape rates allowing configurable purity-rate-heralding tradeoffs, while maintaining efficiency through tunable dispersion compensation. We validate the subcompo-nents using stimulated FWM experiments.
Monolithic InP extended cavity mode-locked laser with a record low 670 MHz repetition rate
Authors: Keyvaninia Shahram , Boerma Hendrik , Tran Trung Thanh , Schindler Alexander , Runge Patrick , Kaiser Ronald , Schell Martin
Published: August 2022

A record low repetition rate monolithic InP mode-locked laser is experimentally reported. Under passive mode-locking, an electrical beat tone at 670 MHz with an electrical linewidth of sub-kHz and a signal-to-noise ratio > 40 dB is measured.
Atomic imaging of complex and chiral molecular structure with laser-induced electron diffraction and machine learning
Authors: Liu Xinyao , Amini Kasra , Sanchez Aurelien , Belsa Blanca , Steinle Tobias , Chirvi Katharina , Biegert Jens
Published: August 2022

We show how laser-induced electron diffraction (LIED) combined with a convolutional neural network (CNN) allows to image the complex chiral molecule Fenchone (C10H16O).
THz PHASR scanner with 2.6 kHz ECOPS trace acquisition rate and longer than 75 picosecond time-domain sampling
Authors: Harris Zachery B. , Arbab M. Hassan
Published: August 2022

We report on our fast THz PHASR scanner capable of achieving time-domain measurements at a 2600 trace/second rate over a 75-picosecond sampling window by operating ECOPS technique using ASOPS hardware.
Holographically fabricated blazed gratings for out-of-plane coupling in integrated optics
Authors: Ahmed Q. Salman , Field James W. , Gow Paul C. , Holmes Christopher , Ko Dong-Woo , Horak Peter , Gawith Corin B. E. , Smith Peter G.R. , Gates James C.
Published: August 2022

We report the development of 45° blazed gratings in integrated waveguides using a holographic UV laser inscription technique for out-of-plane free-space coupling of beams.
Passive 1×32 Multiplexer with 200GHz Channel Spacing in Silicon Photonics
Authors: Gao Yun , Brightly Scott , Zheng Jiajiu , Shiue Ren-Jye , Jabon Kenneth M. , Poulton Christopher V. , Timurdogan Erman , Watts Michael R.
Published: August 2022

We demonstrate passive 1×32 (de)multiplexers with 200GHz channel spacing that matches the ITU grid in the C and L bands. A flat-top 120GHz-wide 1dB passband, channel-to-channel crosstalk of <−30dB, and ~2.5dB insertion loss is measured.
3D Color Printing by Additive Manufacturing of Metallic Thin Films
Authors: Choi Shinhyuk , Zhao Zhi , Zuo Jiawei , Bai Jing , Yao Yu , Wang Chao
Published: August 2022

We demonstrate a new structural color printing technology for micro-scaled images based on polymer-assisted photochemical metal deposition (PPD), a room-temperature, ambient, and additive manufacturing process without requiring any heating, vacuum deposition or etching steps.
Single-Mode Laser Diode Pumped Single-Cavity Yb:KYW Dual-Comb Laser in a MOPA Architecture
Authors: Camenzind Sandro L. , Sevim Tolga , Willenberg Benjamin , Pupeikis Justinas , Phillips Christopher R. , Keller Ursula
Published: August 2022

We present a single-mode-diode pumped polarization-multiplexed Yb:KYW dual-comb laser combined with an Ytterbium-doped fiber-amplifier resulting in 1.1 W output power per comb. We characterize the influence of the amplifier on amplitude and timing noise properties.
Demonstration of Temporal Talbot Effect of Dark Pulse Trains
Authors: Wu Jiaye , Hu Jianqi , Brès Camille-Sophie
Published: August 2022

We experimentally demonstrate the temporal Talbot effect of optical dark pulse trains in frequency combs. It features a mixed pattern of dark and bright pulses at positions of higher-order fractional self-imaging.
Aluminum Nitride Slot-mode Piezo-Optomechanical Crystals
Authors: Radhakrishnan Sumi , Chakraborty Trisha , Murphy Thomas E. , Grutter Karen E.
Published: August 2022

We demonstrate an AlN piezo-opto-mechanical slot-mode resonator excited using a radio-frequency electrode hovering above the chip, with a 1550-nm optical mode coupling to multiple mechanical modes over broad frequency span (4.5 MHz - 3.8 GHz).
Inference and Gradient Measurement for Backpropagation in Photonic Neural Networks
Authors: Pai Sunil , Hughes Tyler W. , Park Taewon , Bartlett Ben , Williamson Ian , Minkov Momchil , Milanizadeh Maziyar , Abebe Nathnael , Morichetti Francesco , Melloni Andrea , Solgaard Olav , Fan Shanhui , Miller David A. B.
Published: August 2022

We experimentally demonstrate in situ backpropagation in a programmable nanophotonic interferometer network, achieving inference accuracies matching digital implementations. Error gradients are computed by simultaneously measuring optical interference at intermediate network components, eliminating expensive digital computations.
Fidelity-Restorable Universal Linear Optics and Neuromorphic Photonics
Authors: Tsakyridis Apostolos , Giamougiannis George , Totovic Angelina , Moralis-Pegios Miltiadis , Pleros Nikos
Published: August 2022

Universal linear operators realized in photonics are expected to drive the next wave of ultra-high throughput neuromorphic computing. We present integrated photonic solutions for implementing unitary and arbitrary complex matrix employed in matrix multiplication operations.
All-optical, ultrafast energy-efficient ReLU function for nanophotonic neural networks
Authors: Li Gordon H.Y. , Sekine Ryoto , Nehra Rajveer , Gray Robert M. , Ledezma Luis , Guo Qiushi , Marandi Alireza
Published: August 2022

We introduce and experimentally demonstrate an all-optical ReLU nonlinear activation function based on the strong quadratic nonlinearity of lithium niobate nanophotonic waveguides and achieve a record-breaking energy-time product per activation of 1.2 × 10
−
27 J · s to overcome the nonlinearity bottleneck in photonic neural networks.
A 16×17-SPAD Sensor with Peak Detection for Single-Shot Pulsed-LiDAR
Authors: Incoronato Alfonso , Cusini Iris , Pasquinelli Klaus , Zappa Franco
Published: August 2022

Outdoor LiDAR gets more and more challenging in high background light environments. We propose a novel SPAD chip architecture and an effective background rejection technique enabling single-shot Time-of-Flight LiDAR acquisitions.
Dynamics of Stimulated Brillouin Scattering in Orbital Angular Momentum Carrying Fibers
Authors: Greenberg Aaron P. , Ramachandran Siddharth
Published: August 2022

We show that orbital angular momentum, and especially its coupling with spin angular momentum (polarization), yields distinctive selection rules for the modal content of Stimulated Brillouin scattering in optical fibers.
Photonics-enabled Continuous and Gapless Time-frequency Analysis of Fast Transient Events
Authors: Crockett Benjamin , Rowe Connor M.L. , Azaña José
Published: August 2022

We experimentally demonstrate the gapless operation of lens-based energy conserving time-frequency analysis by real-time spectrum acquisition of events as short as ~160 ps, without any loss of information and regardless of the time of arrival.
An Er/Yb:glass laser-based optical frequency comb for precision metrology
Authors: Nardelli N. V. , Leopardi H. , Schibli T. R. , Fortier T. M.
Published: August 2022

We characterize an Er/Yb:glass laser frequency comb for precision metrology of atomic clocks and demonstrate a fractional frequency instability <10−18 at 1-s averaging and a 10 GHz phase noise < −110 dBc/Hz at a 1 Hz offset.
Electro-Optic-Modulator-Based Integrated Optical Isolator
Authors: Yu Mengjie , Cheng Rebecca , Reimer Christian , He Lingyan , Luke Kevin , Puma Eric , Shao Linbo , Shams-Ansari Amirhassan , Grant Hannah R. , Johansson Leif , Zhang Mian , Lončar Marko
Published: August 2022

We realized an optical isolation of 48 dBm using a travelling-wave electro-optic phase modulator on thin-film lithium niobate platform. We showed our device successfully protects the linewidth of an integrated III-V laser.
Properties of Heterogeneously Integrated Photonic Crystal Nanolasers with Ultra-low Threshold Current
Authors: Dimopoulos Evangelos , Sakanas Aurimas , Marchevsky Andrey , Xiong Meng , Yu Yi , Semenova Elizaveta , Mørk Jesper , Yvind Kresten
Published: August 2022

We demonstrate an electrically-driven heterogeneously integrated InP-on-Si photonic crystal nanolaser that an ultra-low threshold current of 10.2 μA and we investigate the injection efficiency and leakage current that currently limit the performance.
Experimental Demonstration of Mode Selection in Metallo-Dielectric Nanolasers Coupled via a Bridge
Authors: Jiang Sizhu , Belogolovskii Dmitrii , Deka Suruj S. , Pan Si Hui , Fainman Yeshaiahu
Published: August 2022

Bridge-coupled metallo-dielectric nanolasers that can operate in the in-phase or out-of-phase modes are experimentally demonstrated. The lasing action is confirmed by conventional lasing characterizations, whereas the operating modes are identified by near-field and far-field imaging.
Topological Photonics in Low Loss Tantalum Pentoxide
Authors: Thompson Bradley J. , Gibson Ricky , Carlson David R. , Badescu Stefan C.
Published: August 2022

Topologically designed arrays of ring resonators are fabricated in tantalum pentoxide, a low-loss waveguide material. Testing reveals edge modes and successful topological behavior, and establishes tantalum pentoxide as a suitable material for topological photonics.
Low-threshold Plasmonic Nanolasers at Optical Communication Wavelengths
Authors: Xu Jialu , Zhang Taiping , Li Yongzhuo , Wang Zhen , Zhang Jianxing , Kan Qiang , Zhang Ruikang , Ning Cunzheng
Published: August 2022

We demonstrate a room-temperature plasmonic nanolaser at optical communication wavelengths showing robust performance to fabrication imperfections. The threshold of 49.96 kW/cm2 is lower than the reported near-infrared plasmonic nanolasers of any configuration.
Direct Laser Lithography: Single-Tool Patterning for Nonlinear Integrated Quantum Optics
Authors: Protte Maximilian , Verma Varun B. , Brockmeier Julian , Höpker Jan Philipp , Bruch Felix vom , Lengeling Sebastian , Ricken Raimund , Eigner Christof , Silberhorn Christine , Mirin Richard P. , Nam Sae Woo , Bartley Tim J.
Published: August 2022

We present direct laser lithographic patterning of low-loss waveguides, periodic poling structures for single photon generation, electro-optical modulators and superconducting detectors based on WSi, for integrated quantum circuits in titanium in-diffused lithium niobate.
Integrated III-V/Lithium Niobate Nonlinear Laser
Authors: Li Mingxiao , Chang Lin , Wu Lue , Staffa Jeremy , Ling Jingwei , Javid Usman A. , He Yang , Xue Shixin , Morin Theodore J. , Shen Boqiang , Wang Heming , Zeng Siwei , Zhu Lin , Vahala Kerry J. , Bowers John E. , Lin Qiang
Published: August 2022

We demonstrate a narrow linewidth integrated nonlinear laser with both fine and coarse tunability based on electro-optic and thermo-optic effect respectively, as well as an intracavity frequency doubling capability via second-harmonic generation.
100mJ, 100W Cryogenically Cooled Yb:YLF Laser
Authors: Pergament Mikhail , Kellert Martin , Demirbas Umit , Thesinga Jelto , Reuter Simon , Hua Yi , Kilinc Muharrem , Kärtner Franz X.
Published: August 2022

We present a cryogenically-cooled Yb: YLF laser system consisting of the all-fiber front end, regenerative and 8-pass booster amplifiers cooled to 78K, producing almost diffraction-limited sub-1-ps pulses with 100 mJ energy at a 1 kHz repetition rate.
GaN Coupled Microring Lasers: Towards a Topological Laser Array
Authors: Tohi Shinji , Harari Gal , Ito Takumi , Mukai Takashi , Segev Mordechai
Published: August 2022

We demonstrate a MOPA GaN system, a microring DFB laser coupled to another microring laser. Both rings lase in a single mode, establishing a building block towards a topological laser array in GaN.
Compact Piezoelectric Photonic Crystal Modulator in a Visible-NIR 200 mm CMOS Architecture
Authors: Heim David , Wen Y. Henry , Dong Mark , Larocque Hugo , Leenheer Andrew J. , Gilbert Gerald , Eichenfield Matt , Heuck Mikkel , Englund Dirk R.
Published: August 2022

We demonstrate a silicon nitride photonic crystal cavity modulated via piezo-mechanical actuators fabricated in a broadband CMOS platform. We measure >25 dB extinction with Fano resonances in a small footprint Mach-Zehnder interferometer configuration.
Heterogeneous integration of AlGaAs/GaAs photodiodes on tantala waveguides for visible-light applications
Authors: Jafari Masoud , Fatema Tasneem , Carlson David R. , Papp Scott B. , Beling Andreas
Published: August 2022

For the first time we demonstrate heterogeneously integrated photodiodes on tantalum pentoxide (Ta2O5, or tantala) for visible light detection. The photodiodes have 20 pA dark current, 0.115 A/W responsivity at 635 nm wavelength, and a projected >12 GHz RC-limited bandwidth.
Heterogeneous III-V/Si Non-Volatile Optical Memory: A Mach-Zehnder Memristor
Authors: Cheung Stanley , Tossoun Bassem , Yuan Yuan , Peng Yiwei , Kurczveil Geza , Hu Yingtao , Xian Xiao , Liang Di , Beausoleil Raymond G.
Published: August 2022

We demonstrate a heterogeneously integrated optical III-V/Si MZI memristor for the purposes of non-volatile optical memory. The results indicate the possibility of implementing large scale photonics and optical neural networks with inherent memory functions.
Femtosecond Laser-Induced Damage Threshold of Nematic Liquid Crystals at 1030 nm
Authors: Ramousse Loic , Chériaux Gilles , Claudet Cyrille , Jullien Aurélie
Published: August 2022

The femtosecond laser-induced damage threshold of freely-suspended thin films of liquid crystals is investigated. The breakdown is found dominated by ionization at low repetition rate and by linear absorption at high repetition rate.
Spin/Orbit Conversion in Dichroic Spherulite for Optical Vector Vortices Generation
Authors: Liu Yuanfeng , Zhou Le , Wen Yongzheng , Shen Yang , Sun Jingbo , Zhou Ji
Published: August 2022

Using a naturally existed circular anisotropy from spherulites, we obtain cylindrical vector optical vortex beams through the spin/orbit conversion. This strategy provides promising opportunities for the spherulite applications in structured light fields.
Long-term stable OPCPA-based seed laser for high intensity Ti:Sapphire LPA drivers
Authors: Eichner Timo , Hülsenbusch Thomas , Dirkwinkel Julian , Lang Tino , Winkelmann Lutz , Palmer Guido , Maier Andreas R.
Published: August 2022

Ultrafast laser pulses featuring both, high spatio-temporal beam quality and excellent long-term stability are crucial for many applications. Here, we present a collinear OPCPA-based seed laser for 100 TW-class laser systems, that has been designed to fulfil the particularly strict demands presented by laser-plasma acceleration.
High Average Power Ti:Sa Amplifier for High Energy High Repetition Rate Laser Plasma Accelerator
Authors: Pellegrina Alain , Jeandet Antoine , Ricaud Sandrine , Vernier Aline , Flacco Alessandro , Faure Jérôme , Simon-Boisson Christophe
Published: August 2022

Modern laser plasma accelerators require combination of high peak power and high average power from the laser. Ti:Sa CPA remaining the best technology for such purpose a high average power Ti:Sa amplifier has been developed
High energy, all-polarization maintaining fiber optical parametric chirped-pulse amplification at 1053 nm
Authors: LAFARGUE Léa , SCOL Florent , VANVINCQ Olivier , BOUWMANS Géraud , HUGONNOT Emmanuel
Published: August 2022

We experimentally demonstrate the amplification of ultrashort pulses up to µJ level at 1053nm in an all-polarization maintaining FOPCPA system. This high energy level originates from a parametric process in a specially designed hybrid fiber.
A scalable infrastructure for strontium optical clocks
Authors: Ferdinand Andrew R. , Newman Zachary L. , Zhu Wenqi , Jammi Sindhu , Spektor Grisha , Carlson David R. , Lunden Will , Rakholia Akash V. , Sheredy Dan , Song Junyeob , Ropp Chad , Westly Daron , Aksyuk Vladimir A. , Boyd Martin M. , Agrawal Amit , Papp Scott B.
Published: August 2022

We demonstrate a scalable, integrated photonics infrastructure for optical atomic clocks. We laser cool and trap 4 × 105 87Sr atoms in a magneto-optical trap, using metasurface optics and a compact, single-chamber vacuum system.
Multiplexed broadband ptychography characterization of complex spatial and spectral EUV beams from high harmonic generation
Authors: Schmidt David , Goldberger David , De Las Heras Alba , Hernández-García Carlos , Lei Yuhao , Kazansky Peter , Adams Daniel , Durfee Charles
Published: August 2022

Using multiplexed broadband ptychography, we investigate high-order harmonic vector beams. The method retrieves highly structured beam profiles and wavefronts in addition to spectral resolution without grating dispersion.
Parametrically driven solitons in optical resonators
Authors: Englebert Nicolas , De Lucia Francesco , Parra-Rivas Pedro , Arabí Carlos Mas , Sazio Pier-John , Gorza Simon-Pierre , Leo François
Published: August 2022

We report on the theoretical and experimental demonstration of parametric driving of Kerr cavity solitons in a singly-resonant optical parametric oscillator with competing nonlinearities. We leverage this new configuration to perform random number generation.
Spectral Self-Compression in Gas-Filled Hollow-Core Photonic Crystal Fiber
Authors: Lampen Jacob , Tani Francesco , Li Peng , Lee Kevin F. , Jiang Jie , Russell Philip St.J. , Fermann Martin E.
Published: August 2022

We demonstrate spectral self-compression in a hollow-core gas-filled photonic crystal fiber for the generation of high energy ps pulses with limited bandwidths.
Inverse Designed Integrated Optical Filters for Optical Transmission Shaping
Authors: Ahn Geun Ho , Trivedi Rahul , Yang Kiyoul , White Alexander D. , Vučković Jelena
Published: August 2022

We experimentally demonstrate inverse-designed low-pass, long-pass, and band-stop filters. They show flexible optical transmission shaping with high extinction ratio and low insertion loss, and are commercial foundry-compatible.
Dark Plasmonic Mode Assisted Broadband Adiabatic Light Transfer and Polarizing Beam Splitting
Authors: Yang Guang , Sergienko Alexander V. , Ndao Abdoulaye
Published: August 2022

We propose and demonstrate a broadband light transfer and polarizing beam splitting assisted by a dark plasmonic mode [1] using stimulated Raman adiabatic passage. The plasmonic loss is mitigated by the unique mode evolution mechanism.
Temporal and Spatial Characterization of Ultrafast Terahertz Near-Fields
Authors: Gabriel Annika E. , Othman Mohamed A. K. , Hoffmann Matthias C. , Nanni Emilio A.
Published: August 2022

We demonstrate a technique for robust spatial and temporal characterization of single cycle strong field Terahertz pulses in the near-field of a LiNbO3 source using electro-optic sampling.
Ultrafast Laser Fabricated Fused Silica Fibre Preforms
Authors: Ross C. A. , Harrington K. , Stone J. M. , Birks T. A. , Thomson R. R.
Published: August 2022

A novel method of manufacturing silica fibre preforms is presented which exploits ultrafast laser induced selective etching to fabricate cross-sectional disks that are subsequently stacked and bonded via ultrafast laser welding.
Characterization of Weak Modal Dynamics in Multimode Fibers using Superconducting Nanowire Single-Photon Detectors
Authors: Zhang Yuanhang , Fontaine Nicolas K. , Mazur Mikael , Chen Haoshuo , Ryf Roland , Li Guifang , Blanco-Redondo Andrea
Published: August 2022

We measure the mode transfer matrix of a commercial multimode fiber using ultrasensitive superconducting nanowire single-photon detectors (SNSPDs). We quantify distributed mode coupling and differential mode group delay, and observe cladding modes of the MMF.
Electrically-driven Nonreciprocal Polarization Rotation at 780 nm in Thin-Film Lithium Niobate
Authors: Örsel Oğulcan E. , Bahl Gaurav
Published: August 2022

We demonstrate an electro-optic nonreciprocal polarization rotator for 780nm light in a lithium niobate on insulator photonics platform. Our device achieves ∼12 dB contrast between the polarization-rotated sidebands for opposite directions over a bandwidth ∼ 2nm.
Terahertz transmission characteristics of xanthan gum colloids in a microfluidic chip
Authors: Zhou Hangyu , Shen Yan , Li Qingjun , Jiang Huimin , Li Yuchai , Su Bo , Zhang Cunlin
Published: August 2022

Terahertz time-domain spectroscopy (THz-TDS) technology has great application prospects for the detection of biological macromolecules, whereas microfluidic technology uses micro-channel networks to manipulate liquids, which can reduce the influence of hydrogen bonds in liquids on THz waves. The combination of these two technologies makes the detection of THz waves in aqueous solutions of biomolecules more accurate and efficient. In this study, microfluidic technology and THz-TDS technology were applied to study the THz transmission characteristics of xanthan gum, providing three feasible methods for the detection of xanthan gum colloids.
Measurement and analysis of the dynamic response of a double-liquid lens driven by sinusoidal signals
Authors: Xu Rongqing , Tan Yue , Kong Meimei , Zhang Hongchao , Liu Xue , Zou Ningmu
Published: August 2022

The dynamic response of a double-liquid lens driven by sinusoidal signals with different frequencies and amplitudes is researched experimentally. The results show that the oscillation frequency of the liquid lens interface is twice that of the driving signal at a certain oscillation position. When the driving voltage amplitude is unchanged, and the oscillating position of the liquid interface is stable, the oscillation amplitude increases first and then decreases with the increase of frequency. When the driving voltage frequency is constant, with the increase of the driving voltage amplitude, the deviation of the oscillation position of the liquid interface from the initial position and oscillation amplitude increases. According to the force analysis of the liquid interface, the reasonable explanation of the above experimental results is presented.
Time-domain Hong–Ou–Mandel interference of quasi-thermal fields and its application in linear optical circuit characterization
Authors: Romanova Anna , Katamadze Konstantin , Avosopiants Grant , Biguaa Leon , Skryabin Nikolay , Kalinkin Alexander , Dyakonov Ivan , Bogdanov Yurii , Kulik Sergei
Published: August 2022

We study temporal correlations of interfering quasi-thermal fields, obtained by scattering laser radiation on a rotating ground glass disk. We show that the Doppler effect causes oscillations in the temporal cross correlation function. Furthermore, we propose how to use Hong–Ou–Mandel interference of quasi-thermal fields in the time domain to characterize linear optical circuits.
Perturbing period-one laser dynamics for frequency-modulated microwave generation with external locking
Authors: Zhang Luan , Chan Sze-Chun
Published: August 2022

Period-one (P1) dynamics of two lasers under a common injection are perturbed for externally locked frequency-modulated continuous-wave (FMCW) generation. The first laser is injected into P1 dynamics at frequency

f
0

, where the dynamics is perturbed by a slow modulation to induce adiabatic sweeping for FMCW generation and a fast modulation to seed the whole comb for external locking. The second laser is injected into a faster P1 dynamics at

3

f
0

that is perturbed for harmonic locking. The central frequency is boosted to

4

f
0

by coherently combining the lasers. FMCW generation with external locking is demonstrated with a sweep range of 6 GHz, comb contrast enhanced to 42 dB, and

4

f
0

reaching 80 GHz. Inherent competition between external locking and frequency modulation is revealed, although an optimal strength is identified for locking the whole comb. Wide tuning of the central frequency is also supported.
Anti-reflection metallic anode-enhanced performance of organic solar cells via cross coupling between Fabry–Perot cavity modes and microcavity modes
Authors: Jin Yu , Huang Zhongshen , Jiang Jingxian , Wu Zhijun , Li Xiaoyan , Gong Dongmei , Xiang Chunping
Published: August 2022

An effective anti-reflection metallic anode with the structure of glass/dielectric2 /Ag (D1D2M) is demonstrated both in small-molecule (SM) and conjugated polymer (CP) organic solar cells (OSCs). The anti-reflection mechanism is investigated by the finite-difference time-domain numerical calculation method and the experimental method. By tuning the refractive index and the thickness of the D2 layer, the reflection light is confined in the Fabry–Perot (F-P) cavity modes, which effectively enhances the transmittance of the D1D2M anode in the wavelength range of 420 nm–800 nm. Compared with the conventional glass/Ag (D1M) anode, the experimental transmittance of the D1D2M anode is enhanced by 33.24% at a wavelength of 550 nm. By replacing the D1M anode with the D1D2M anode in the OSCs, the F-P cavity modes cross couple with the microcavity modes in the active layers. As a result, the absorption intensity is obviously increasing in a wide angle range (

0
≤
θ
≤

85
∘

) in the wavelength ranges of 475 nm–650 nm and 540 nm–720 nm for the SM and CP OSCs, respectively. The short circuit current density and power conversion efficiency of the SM OSC is increased by 25.07% and 27.23%, respectively.
Sources of information used by elite distance running coaches for selection decisions
Authors: Johnston Kathryn , Baker Joseph
Published: August 2022

Talent identification and selection are critical components of competitive sport success. Despite the time, effort, and resources invested, the accuracy of selection decisions remains generally poor. While much of the scholarship in this area has focused on the factors discriminating skilled and less-skilled individuals, limited research exists onwhatinformation is used in the decision-making process for athlete selection. The current study seeks to gain a better understanding of the information used by elite distance running coaches when forming judgements for athlete selection. Ten semi-structured interviews with elite distance running coaches from across Canada were transcribed and analyzed using inductive thematic analysis. It was interpreted that coaches mainly gather information using their coach’s eye to determine an athlete’s ‘fit’ to the team. Coaches also use more objective information such as race times and movement analyses to assess performance and judge future ‘potential’. As well, the decisions were believed to be influenced by situational considerations at the time of the selection procedure. Specifically, these considerations affecting a coach’s selection included length of time to make a decision, personal limitations in decision-making abilities, and team circumstances. Interestingly, coaches recognized limitations in their selection practices and procedures and discussed some of their personal and system-level biases, highlighting their awareness of potential selection inefficiencies/inaccuracies. Overall, distance running coaches used a variety of techniques to gather information before a selection was made, relying on both subjective and objective information for crafting judgments. Findings are discussed in relation to implications for coaches, sport organizations, and talent identification and selection programs.
Ovariectomy reduces cholinergic modulation of excitatory synaptic transmission in the rat entorhinal cortex
Authors: Batallán Burrowes Ariel A. , Olajide Olayemi Joseph , Iasenza Isabella A. , Shams Waqqas M. , Carter Francis , Chapman C. Andrew
Published: August 2022

Estrogens are thought to contribute to cognitive function in part by promoting the function of basal forebrain cholinergic neurons that project to the hippocampus and cortical regions including the entorhinal cortex. Reductions in estrogens may alter cognition by reducing the function of cholinergic inputs to both the hippocampus and entorhinal cortex. In the present study, we assessed the effects of ovariectomy on proteins associated with cholinergic synapses in the entorhinal cortex. Ovariectomy was conducted at PD63, and tissue was obtained on PD84 to 89 to quantify changes in the degradative enzyme acetylcholinesterase, the vesicular acetylcholine transporter, and muscarinic M1 receptor protein. Although the vesicular acetylcholine transporter was unaffected, ovariectomy reduced both acetylcholinesterase and M1 receptor protein, and these reductions were prevented by chronic replacement of 17β-estradiol following ovariectomy. We also assessed the effects of ovariectomy on the cholinergic modulation of excitatory transmission, by comparing the effects of the acetylcholinesterase inhibitor eserine on evoked excitatory synaptic field potentials in brain slices obtained from intact rats, and from ovariectomized rats with or without 17β-estradiol replacement. Eserine is known to prolong the effects of endogenously released acetylcholine, resulting in an M1-like mediated reduction of glutamate release at excitatory synapses. The reduction in excitatory synaptic potentials in layer II of the entorhinal cortex induced by 15-min application of 10 μM eserine was greatly reduced in slices from ovariectomized rats as compared to intact rats and ovariectomized rats with replacement of 17β-estradiol. The reduced modulatory effect of eserine is consistent with the observed changes in cholinergic proteins, and suggests that reductions in 17β-estradiol following ovariectomy lead to impaired cholinergic function within the entorhinal cortex.
Acute coronary syndrome versus acute myocarditis in young adults–value of speckle tracking echocardiography
Authors: Wieczorkiewicz Paulina , Supel Karolina , Przybylak Katarzyna , Kacprzak Michal , Zielinska Marzenna
Published: August 2022

Purpose

Comparing myocarditis with an acute coronary syndrome (ACS)-like presentation and acute myocardial infarction (AMI) poses an important clinical challenge. The purpose of the study was to investigate the diagnostic value of the clinical, laboratory and especially echocardiographic characteristics including speckle tracking echocardiography (STE) of patients with ACS-like myocarditis and AMI.

Methods

We conducted a retrospective analysis comparing 69 symptomatic patients (≤ 45 years old), hospitalized at the Department of Interventional Cardiology (Medical University of Lodz, Poland) between April 2014 and June 2021 with an initial diagnosis of ST-segment elevation myocardial infarction.

Results

37 patients with the cardiac magnetic resonance–confirmed acute myocarditis and 32 patients diagnosed with AMI based on the clinical presentation, electrocardiogram and the presence of a culprit lesion on the coronary angiography were analysed including echocardiography parameters. On STE analysis an average global longitudinal (GLS), radial and circumferential strain including three—layers observation were significantly lower (absolute value) in patients with AMI versus acute myocarditis (p<0.05). There was no significant difference in Endo/Epi ratio (p = 0.144) between the groups. An average GLS < (-17.5) represented the optimal cut-off value for the myocarditis diagnosis.

Conclusion

In patients with AMI a significant reduction of global and three-layers strains compared to patients with myocarditis was detected. Furthermore, our analysis also confirmed the discriminative pattern of myocardial injury between the groups.
Incorporating social determinants of health into individual care—a multidisciplinary perspective of health professionals who work with people who have type 2 diabetes
Authors: Frier Amanda , Devine Sue , Barnett Fiona , McBain-Rigg Kris , Dunning Trisha
Published: August 2022

Social determinants of health (SDoH) and type 2 diabetes mellitus (T2DM) are interrelated. The prevalence of T2DM is increased amongst those with suboptimal SDoH. Poor SDoH can also negatively impact T2DM self-management. Social determinants of health are mostly considered at population and community levels, rather than individually or clinically. This qualitative study combines the perspectives of a multidisciplinary cohort of health professionals to identify and explore the impact of social determinants on self-management, and ways they could be incorporated into individual clinical care. Purposively selected participants chose to partake in an in-depth, semi-structured, one-on-one interview or focus group. Data were analysed, and themes identified using a combination of deductive and inductive thematic analysis. Fifty-one health professionals volunteered for the study. Two small focus groups (n = 3 and n = 4) and 44 one-on-one interviews were conducted. The identified themes were: 1) Support for incorporating SDoH into T2DM care, 2) Effect of SDoH on T2DM self-management, 3) Identifying and addressing social need, 4) Requirements for incorporating SDoH into T2DM individual clinical care. Health professionals reported that poor social determinants negatively affect an individual’s ability to self manage their T2DM. Person-centred care could be enhanced, and people with T2DM may be more likely to achieve self-management goals if SDoH were included in individual clinical care. To achieve successful and sustained self-management for people with T2DM, health professionals require a thorough understanding of T2DM and the effect of social determinants, respect for client privacy, client trust and rapport, effective communication skills, validated tools for assessing SDoH, team champions, teamwork, ongoing education and training, adequate resources, guiding policies and procedures, and management support. Incorporating SDoH into individual, clinical care for people with T2DM was strongly supported by health professionals. If embraced, this addition to care for individuals with T2DM could improve self-management capacity and enhance person-centred care.
Is mental health co-morbidity an influencing factor in the health service utilisation of women with diabetes mellitus?
Authors: Oorschot Tracey , Adams Jon , Sibbritt David
Published: August 2022

Diabetes Mellitus, affecting nearly half a billion people worldwide, is a substantial global public health issue. Although diabetes predominantly affects men, women with diabetes have specific risks and self-management characteristics. Women have a higher risk of either presenting with or developing depression or anxiety, as well as being high users of complementary medicine which can create clinical governance issues. In spite of these known gender differences, limited research has explored gender-specific diabetes care, especially health service use patterns. As increasing attention has turned to supporting people with diabetes to successfully self-manage their diabetes, it is important that we understand how women with diabetes are using health services, and if their specific risk profile is influencing their health care choices. Our study sought to examine the relationship between mental health status and the patterns of conventional and complementary medicine health service use by women diagnosed with diabetes mellitus. Our results showed that women with diabetes and any mental health co-morbidity were more likely to visit their general practitioner more frequently or use herbal medicine than those without a mental health co-morbidity. Women with depression and anxiety were also less likely to consult a physiotherapist and those with anxiety less likely to consult a podiatrist over time when compared to the other mental health groups.
Municipal amalgamations and the quality of public services: A study based on city-county mergers in China
Authors: Mao Zijun , Wang Deqi , Zhang Guoping
Published: August 2022

Municipal amalgamation is one of the core policy tools for Chinese government intervention in urbanization. The city-county merger policy provides a valuable research object for examining whether government-led urban expansion improves the quality of public services. By using city panel data from 2003 to 2019, this paper examines the policy effects of city-county mergers on the quality of public services using the Propensity Score Matching-Difference-in-Differences (PSM-DID) model. The results indicate that, after controlling for other factors, city-county mergers have increased the quality of public services by 1.2%. A placebo test has validated the robustness of this positive effect. Through further tests, the paper finds that the policy has positively affected all three aspects of the quality of public services in China: education, health care, and transport infrastructure, with the greatest impact being on education. Using a case study of a city-county merger in the Fenghua District of Ningbo, this paper depicts the transmission mechanism and argues that the policy affects the quality of public services by providing institutional security (financial and administrative power) and promoting regional integration in the new city area.
Evaluation of critical risk factors in the implementation of modular construction
Authors: Pervez Hamza , Ali Yousaf , Pamucar Dragan , Garai-Fodor Mónika , Csiszárik-Kocsir Ágnes
Published: August 2022

Modular construction is considered as a preferred construction method over conventional construction due to a number of benefits including reduction in project completion time, improved environmental performance, better quality, enhanced workers’ safety and flexibility. However, successful implementation of modular construction is hindered by various risk factors and uncertainties. Therefore, it is imperative to perform a comprehensive risk assessment of critical risk factors that pose a negative impact on the implementation of modular construction. Moreover, there is also a relatively less rate of modular construction adoption in developing countries, highlighting the need to focus more on underdeveloped regions. This study aims to propose a risk assessment framework for identification, evaluation and prioritization of critical risk factors affecting the implementation of modular construction in Pakistan. 20 risk factors were identified from previous literature which were then evaluated to shortlist the most significant risks using Fuzzy Delphi. The most significant risk factors were then prioritized using a novel Full-Consistency Method (FUCOM). The results specified ‘Inadequate skills and experience in modular construction’, ‘Inadequate capacity of modular manufacturers’ and ‘Inability to make changes in design during the construction stage’ as top three critical risks in the implementation of modular construction. This is the first study to propose a risk assessment framework for modular construction in Pakistan. The results of the study are useful to provide insights to construction industry practitioners in highlighting and eliminating risks involved in modular construction planning and execution.
A comprehensive analysis of avian lymphoid leukosis-like lymphoma transcriptomes including identification of LncRNAs and the expression profiles
Authors: Dong Kunzhe , Heidari Mohammad , Mays Jody , Chang Shuang , Xie Qingmei , Zhang Lei , Ai Yongxing , Zhang Huanmin
Published: August 2022

Avian lymphoid leukosis-like (LL-like) lymphoma has been observed in some experimental and commercial lines of chickens that are free of exogenous avian leukosis virus. Reported cases of avian lymphoid leukosis-like lymphoma incidences in the susceptible chickens are relatively low, but the apathogenic subgroup E avian leukosis virus (ALV-E) and the Marek’s disease vaccine, SB-1, significantly escalate the disease incidence in the susceptible chickens. However, the underlying mechanism of tumorigenesis is poorly understood. In this study, we bioinformatically analyzed the deep RNA sequences of 6 lymphoid leukosis-like lymphoma samples, collected from susceptible chickens post both ALV-E and SB-1 inoculation, and identified a total of 1,692 novel long non-coding RNAs (lncRNAs). Thirty-nine of those novel lncRNAs were detected with altered expression in the LL-like tumors. In addition, 13 lncRNAs whose neighboring genes also showed differentially expression and 2 conserved novel lncRNAs,XLOC_001407andXLOC_022595, may have previously un-appreciated roles in tumor development in human. Furthermore, 14 lncRNAs, especiallyXLOC_004542, exhibited strong potential as competing endogenous RNAs via sponging miRNAs. The analysis also showed that ALV subgroup E viral geneGag/Gag-poland the MD vaccine SB-1 viral geneR-LORF1andORF413were particularly detectable in the LL-like tumor samples. In addition, we discovered 982 novel lncRNAs that were absent in the current annotation of chicken genome and 39 of them were aberrantly expressed in the tumors. This is the first time that lncRNA signature is identified in avian lymphoid leukosis-like lymphoma and suggests the epigenetic factor, lncRNA, is involved with the avian lymphoid leukosis-like lymphoma formation and development in susceptible chickens. Further studies to elucidate the genetic and epigenetic mechanisms underlying the avian lymphoid leukosis-like lymphoma is indeed warranted.