bluuebunny/crossref_metadata_2025 huggingface dataset:
Generating Quantum Random Numbers on a CubeSat (SpooQy-1)
Authors: Reezwana Ayesha , Islam Tanvirul , Grieve James A. , Wildfeuer Christoph F. , Ling Alexander
Published: September 2020

We demonstrate a quantum random number generator based on entangled photon-pair statistics on-board a CubeSat orbiting in Low Earth Orbit.
Polarization Entangled Photon-pair Source Using a Broadband Pump
Authors: Perumangatt Chithrahanu , Lohrmann Alexander , Villar Aitor , Ling Alexander
Published: September 2020

We experimentally demonstrate a high quality, 100 nm broadband polarization entangled photon-pair source using a linear interferometer design based on a single periodically-poled potassium titanyl phosphate (PPKTP) crystal pumped with a free running laser diode.
Predicting Dead Time Distortion for High-Flux Single-Photon Lidar
Authors: Rapp Joshua , Ma Yanting , Dawson Robin M. A. , Goyal Vivek K
Published: September 2020

Detector and electronics dead times distort photon detection histograms at high flux, but can be mitigated by probabilistic modeling identifying the sequence of detections as a Markov chain.
Microresonator Dual-Comb Coherent FMCW LiDAR
Authors: Lukashchuk Anton , Riemensberger Johann , Karpov Maxim , Liu Junqiu , Lucas Erwan , Kippenberg Tobias J.
Published: September 2020

We introduce a novel architecture for parallel frequency-modulated continuous wave (FMCW) laser ranging (LiDAR). Using dual soliton microcombs, we demonstrate a parallel distance measurement with 24 channels requiring only a single FMCW pump laser and coherent receiver for read-out.
A Brillouin LIDAR For Remote Sensing the Temperature Profile in the Mixed Layer
Authors: Koestel Daniel , Rupp David , Langfeld Benedikt , Walther Thomas
Published: September 2020

We present latest results on our Brillouin Scattering LIDAR to remotely measure the temperature profile in the ocean, i.e. accuracy, improvements on various components as well as a method to independently determine temperature and salinity.
Surface Enhanced Raman Spectroscopy, SERS for Aerosol Point Detection
Authors: Sivaprakasam Vasanthi
Published: September 2020

A SERS technique is developed for potential in situ detection, chemical identification and dynamics study of individual aerosol particles. Our technique involves generating and trapping aerosols containing analyte molecules and metallic nanoparticles that demonstrates 105 enhancement.
Selective Detection of Ethylene Using a Fiber-Optic Guided Mode Resonance Device: In-Field Crop/Fruit Diagnostics
Authors: Tabassum Shawana , Kumar Ratnesh
Published: September 2020

We demonstrate a first-of-its-kind heater-integrated fiber optic sensor utilizing guided mode resonance and coated it with a copper complex-1 coating for selective detection of gaseous ethylene, that provides a sensitivity of 20 pm/ppm for ethylene.
Radiation Pressure Laser Power Meter for Industrial Laser Machining
Authors: Artusio-Glimpse Aly , Ryger Ivan , Azarova Natalia , Williams Paul , Lehman John
Published: September 2020

Demonstration and validation of a linear radiation pressure-based high-power laser power meter is presented. To date, this device is the most promising real-time, absolute power meter for laser material processing where power monitoring is crucial.
Thermal Compensation for High Load Spatial Light Modulators in Real-Time
Authors: Christopher Peter J. , Mouthaan Ralf , Kadis Andrew , Gabbani Nadeem , O’Neill William , Wilkinson Timothy D.
Published: September 2020

We introduce a concurrent real-time calibration process for diffractive lithography using liquid crystal spatial light modulators. This allows for increased power handling capabilities for given phase modulation accuracy.
Printed Random Lasers
Authors: Chen Yi-Zih , Hsu Yun-Tzu , Liao Yu-Ming , Chen Yang-Fang
Published: September 2020

Printed random lasers with great versatility, compatibility, and universality can be well adopted by most of the commercial inkjet printers or 3D printers in the mainstream market, promising high application values from lab to fab.
Active and Ultrasensitive Chemical and Biosensing through Optothermally Generated Microbubble
Authors: Karim Farzia , Sun Yvonne , Vasquez Erick S. , Zhao Chenglong
Published: September 2020

An ultrasensitive chemical and biosensing method has been demonstrated for active sensing of analytes. This method works based on an optothermal microbubble which is generated through laser heating of metallic nanoparticles solution.
Fiber Based Optofluidic Micro-Flow Cytometer Collecting Side-Scattered Light
Authors: Harish A.V. , Kumar T. , Russom A. , Margulis W. , Laurell F.
Published: September 2020

A compact fiber capillary based microflow cytometer capable of detecting side- scattered-light is demonstrated by using a 450 angle-cleaved metal coated optical fiber tip.
Probing the red blood cell interaction in individual cell pairs by optical tweezers
Authors: Zhu Ruixue , Popov Alexey , Meglinski Igor
Published: September 2020

The peculiarity of red blood cell interaction was studied by optical tweezers. The intercellular interaction force in cell pairs and the role of cell deformation and adhesion time in interaction dynamics were evaluated and discussed.
Farm to Table: Applications for New Hyperspectral Imaging Technologies in Precision Agriculture, Food Quality and Safety
Authors: Fong Alexandre , Shu George , McDonogh Barry
Published: September 2020

Hyperspectral imagers can be deployed throughout the food supply chain. From laboratory plant genomics studies and measuring crop health to inline process monitoring. The enhanced spectral-spatial information provides novel insight of chemical and structural composition.
High temperature operation of quantum dot semiconductor optical amplifier for uncooled 80 Gbps data transmission
Authors: Akahane Kouichi , Umezawa Toshimasa , Matsumoto Atsushi , Yoshida Yuki , Yamamoto Naokatsu
Published: September 2020

The amplification of 80 Gbps non-return to zero signal and error-free operation within the FEC limit were demonstrated in online data transmission measurements at over 60oC using quantum dot SOA.
Sub-wavelength Channel Waveguide with Near-Zero Flattened Dispersion at 1.55 μm on Silicon
Authors: Lai Yu-Ting , Hsu Yi-Jang , Kuo Hsuan-Ming , Lai Yinchieh
Published: September 2020

We propose and study a new type of channel waveguides with sub-wavelength structures for achieving near-zero flattened dispersion band (< 100ps/nm/km variation within 200nm bandwidth) on the silicon-on-insulator (SOI) platform at the 1.55pm telecommunication wavelength.
Automated Screening of Sickle Cells Using a Smartphone- Based Microscope and Deep Learning
Authors: de Haan Kevin , Koydemir Hatice Ceylan , Rivenson Yair , Tseng Derek , Van Dyne Elizabeth , Bakic Lissette , Karinca Doruk , Liang Kyle , Ilango Megha , Gumustekin Esin , Ozcan Aydogan
Published: September 2020

We present a deep learning-based framework for performing automatic screening of sickle cells using a smartphone-based microscope. We achieved 98% accuracy when blindly testing 96 human blood smear slides, including 32 with sickle cell disease.
GHz femtosecond ablation: efficiency and quality aspects
Authors: Bonamis G. , Mishchik K. , Audouard E. , Mottay E. , Honninger C. , Lopez J. , Manek-Honninger I.
Published: September 2020

GHz femtosecond ablation results in high specific removal rates. The efficiency increase can be explained by combined non-thermal and thermal contributions in the laser-matter interaction. We study the impact of the efficiency gain on the obtained processing quality.
Investigations Concerning the Removal Rate and Surface Quality for Laser Machining with GHz bursts in Real Surface Structuring Applications
Authors: Remund S. , Gafner M. , Chaja M. , Urniezius A. , Butkus S. , Neuenschwander B.
Published: September 2020

fs-GHz-burst experiments with up to 25 pulses per burst show strong melting effects and a tremendous decrease of the removal rate. The latter follows the tendency obtained for single pulses of corresponding pulse duration.
Laser Additive Manufacturing through Opto-thermo- mechanical Printing under Ambient Conditions
Authors: Alam Md Shah , Zhao Chenglong
Published: September 2020

This work represents a low-cost additive manufacturing using laser assisted thermo-mechanical printing of metallic nanoparticles under ambient conditions. This method offers enormous prospective in 3D printing technology at submicron and nano scale.
Laser De-bonding from Silicon Wafers with Picosecond 2.09-μm Holmium Laser
Authors: Astrauskas Ignas , Povazay Boris , Pugzlys Audrius , Baltuska Andrius
Published: September 2020

We study an effect of pulse duration of 2.09-pm laser on the laser de-bonding of gold from silicon wafers. Developed picosecond Ho:YAG laser with a simple dispersion management is found to be optimal for the process.
Agri-combs: Open-path dual-comb spectroscopy of livestock emissions
Authors: Herman Daniel I. , Hutcherson Lindsay C. , Weerasekara Chinthaka , Giorgetta Fabrizio R. , Cossel Kevin C. , Colacion Gabriel M. , Newbury Nathan R. , Welch Stephen M. , DePaola Brett D. , Coddington Ian , Santos Eduardo A. , Washburn Brian R.
Published: September 2020

Near-infrared dual-comb spectroscopy is performed over two open-air paths upwind and downwind from pens containing approximately four hundred cattle. Time- resolved enhancements of CO2, CH4, NH3 and H2O were observed on the downwind path. Work of the US Government and not subject to copyright.
Mid-Infrared Dual-Comb Spectroscopy of Biomass Pyrolysis
Authors: Makowiecki Amanda S. , Hoghooghi Nazanin , Herman Daniel I. , Strong Elizabeth F. , Cole Ryan K. , Ycas Gabriel , Giorgetta Fabrizio R. , Newbury Nathan R. , Coddington Ian R. , Rieker Gregory B.
Published: September 2020

We use a broadband mid-IR dual-comb spectrometer operating between 2.8 and 5 microns to measure time-resolved mole fractions of 12 gaseous species and isotopologues in the pyrolysis products above a heated Eucalyptus wood sample.
A Thin Film Black Phosphorus Light-Emitting Diode
Authors: Wang Junjia , Rousseau Adrien , Yang Mei , Low Tony , Francoeur Sebastien , Kena-Cohen Stephane
Published: September 2020

We demonstrate a black phosphorus light-emitting diode based on a black phosphorus/molybdenum disulfide heterostructure. The device shows an electroluminescence maximum at a wavelength of 3.68 pm with an internal quantum efficiency of ~1%.
Frequency blue chirp in Fabry-Perot cavity QCL
Authors: Chin S. , Mitev V. , Boiko D. L.
Published: September 2020

The spectral measurement of the blue chirped emission in FP cavity QCL operating at 8.15 pm has been successfully demonstrated. The output frequency of the laser was swept over the spectral range of 25 cm-1 within 2 ps.
Photonic Accelerator : Challenges and Promise
Authors: Kitayama Ken-ichi
Published: September 2020

Photonic accelerator is optimized to perform specific functions placed at frontend, which does so faster with less power consumption than electronic counterparts. We will introduce its concept and discuss the challenges and promising use cases.
GSST-based photonic memory multilevel perceptron
Authors: Miscuglio Mario , Meng Jiawei , Yesiliurt Omer , Zhang Yifei , Prokopeva Ludmila J. , Mehrabian Armin , Hu Juejun , Kildishev Alexander V. , Sorger Volker J.
Published: September 2020

Here we demonstrate an on-chip programmable multi-level non-volatile photonic memory based on an ultra-compact (<4pm) hybrid GSST-silicon Mach Zehnder modulator, with low insertion losses (3dB), used as node in a photonic neural network that effortlessly perform inference.
Nanophotonics Technology for Signal Processing and Neuromorphic Accelerators
Authors: Fainman Yeshaiahu (Shaya) , Deka Suruj S.
Published: September 2020

Dense photonic integration requires miniahrrization of materials, devices and subsystems, including passive components (e.g., engineered composite metamaterials, filters, etc.), active components (e.g., lasers, modulators and nonlinear wave mixers) and integrated circuits (Fourier transform spectrometer, programmable phase modulator of free space modes, etc.). These novel devices are needed for future signal processing and neuromorphic processors.
Universal active metasurfaces for dynamic beam steering and reconfigurable focusing at telecommunication wavelengths
Authors: Shirmanesh Ghazaleh Kafaie , Sokhoyan Ruzan , Wu Pin Chieh , Atwater Harry A.
Published: September 2020

We report the design and experimental demonstration of a ‘universal’ reconfigurable metasurface, which by electrical control of individual metasurface elements, enables both dynamic beam steering and reconfigurable focusing.
All-Dielectric Intersubband Polaritonic Metasurface with Giant Second-Order Nonlinear Response
Authors: Sarma Raktim , Xu Jiaming , de Ceglia Domenico , Nookala Nishant , Carletti Luca , Campione Salvatore , Klem John , Gcnnaro Sylvain D. , Sinclair Michael B. , Belkin Mikhail A. , Brener Igal
Published: September 2020

We demonstrate an extremely nonlinear all-dielectric metasurface that employs intersubband polaritons to achieve a second-harmonic conversion coefficient of 3 mW/W2, and second-harmonic power conversion efficiency of 0.045% at a modest pump intensity of 6.7 kW/cm2.
Modulating Chiroptical Coupling and Light-Valley Interactions with Active Chiral Metamaterials
Authors: Wu Zilong , Li Jingang , Zheng Yuebing
Published: September 2020

Active modulation of near-field chiroptical couplings and handedness-selective valley behaviors in a monolayer semiconductor is achieved using plasmonic moire chiral metamaterials (MCMs) with strong and dynamically tunable optical chirality.
Experimental demonstration of higher-order topological states in photonic metasurfaces
Authors: Vakulenko A. , Kiriushechkina S. , Li M. , Zhirihin D. , Ni X. , Guddala S. , Korobkin D. , Alu A. , Khanikaev A. B.
Published: September 2020

We demonstrate and visualize the emergence of a topological transition and opening of a Dirac cone by directly exciting the bulk modes of the higher-order topological metasurface via solid-state immersion spectroscopy. The open nature of the metasurface is then utilized to directly image topological boundary states. We show that, while the topological domain walls host 1D edge states, their bending induces 0D higher-order topological modes confined to the corners.
Generation of Structured Light via Nano Structures and Applications
Authors: Yue Fuyong , Aglieri Vincenzo , Piccoli Riccardo , Rahim Aadhi , Macaluso Roberto , Toma Andrea , Razzari Luca , Morandotti Roberto
Published: September 2020

The generation of structured light by means of metasurfaces is presented and the applications in the characterizations of polarization rotation and Pancharatnam-Berry phase are discussed.
Broadband Slow Light in Topologically Protected Waveguides
Authors: Mann Sander A , Alù Andrea
Published: September 2020

We demonstrate that broadband slow light can be achieved over the entire bandgap by periodically loading a topologically protected unidirectional waveguide with low-Q resonances.
Theory of Momentum-to-Real Space Mapping of Topological Singularities
Authors: Jajtic Ema , Liu Xiuying , Xia Shiqi , Song Daohong , Li Denghui , Tang Liqin , Leykam Daniel , Xu Jingjun , Chen Zhigang , Buljan Hrvoje
Published: September 2020

We present a theoretical framework describing the connection between pseudospin, orbital angular momentum, and the underlying topology for lattices with conical intersections, which manifest the universal mapping of topological singularities from momentum to real space.
Cryogenic-Temperature Operation of SPADs in Deep Submicrometer CMOS
Authors: Kramnik Danielius , Ram Rajeev J.
Published: September 2020

We discuss dark count, afterpulsing, and detection efficiency trends from 77K to 300K in SPADs fabricated in standard 90nm CMOS. With lps dead time, afterpulses and primary dark counts are traded-off optimally at 120K.
A Super Ising Machine with All-to-All Two-body and Four-body Interactions
Authors: Kumar Santosh , Zhang He , Huang Yu-Ping
Published: September 2020

We propose and demonstrate an Ising machine that contains nearly a million spins and supports all-to-all many-body interactions via frequency-conversion process. Its ground state is approximately obtained via adaptive feedback control.
Quantum computing with 20 photons in 60 modes
Authors: Lu Chao-Yang
Published: September 2020

We resonantly excite a single quantum dot coupled to a polarized microcavity to create single photons with high efficiency, purity, and indistinguishability simultaneously. We inject 20 photons into a 60-mode interferometer to perform boson sampling at a Hilbert space size of 10×14.
The Capacity of Quantum Neural Networks
Authors: Wright Logan G. , McMahon Peter L.
Published: September 2020

Quantum neural networks (QNN) are a promising application of near-term quantum computers. We present an information theory of QNN’s expressive power, which we apply to an example optical QNN based on a Gaussian Boson Sampler.
Nanophotonic Quantum Network Nodes Based on Epitaxial Rare-Earth on Silicon Heterostructures
Authors: Wicker Christina , Tao Tao , Huang Yizhong , Prakash Abhinav , Singh Manish , Dibos Alan , Guha Supratik , Zhong Tian
Published: September 2020

We present the development of nanophotonic quantum nodes based on an epitaxial 167Er3+:Y2O3 on silicon platform. Slot photonic crystal cavities with an ultra-small mode volume enable coupling to individual erbium qubits at the telecom wavelength.
Photonic Quantum Programmable Gate Arrays
Authors: Bartlett Ben , Fan Shanhui
Published: September 2020

We describe a photonic integrated circuit architecture which can be reprogrammed to prepare any quantum state or operator, in principle deterministically. Gradient- based circuit optimization can automatically implement highly compact approximate quan-tum circuits with near-unity fidelity.
Compressed Ultrafast Photography: Imaging Light-Speed Events in a Snapshot
Authors: Liang Jinyang
Published: September 2020

We review the operating principle of compressed ultrafast photography (CUP)—the world’s fastest single-shot receive-only 2D imaging modality. We will also discuss representative recent advances of CUP in hardware improvement, software development, and application exploration.
Multi-Tap Charge Modulator Based Ultra-Fast Computational CMOS Image Sensors for Single-Shot and Repeatable Image Acquisition
Authors: Kagawa Keiichiro
Published: September 2020

A computational CMOS image sensor with programmable temporal shutters is developed. The macro-pixel structure enables to utilize ordinary single-aperture lenses. The pixel is based on the lateral electric-field charge modulator (LEFM) with a sub-nanosecond response.
Effects of Electron Bunch Width on the Efficiency of HighOrder Harmonic Generation from Ultrathin Solid Targets
Authors: Fasano N. M. , Edwards M. R. , Mikhailova J. M.
Published: September 2020

We demonstrate the importance of the finite extent of the electron bunch width on the spectral power law and the efficiency of high harmonic generation from a relativistic laser interacting with an ultrathin target.
Patterned-graphene-based broadband tunable metamaterial absorber in terahertz band
Authors: Du Xuemei , Yan Fengping , Wang Wei , Zhang Luna , Bai Zhuoya
Published: September 2020

A broadband metamaterial absorber based on the novel design of the combination of cross and slotted-square graphene sheets is presented and analyzed from the perspectives: perfect absorptivity, absorption bandwidth, tunability and insensitivity.
Alignment-free Optical Pre-conditioning System for Omni-resonant Enhancement of a Solar Cell
Authors: Shiri Abbas , Villinger Massimo L. , Villinger Christopher H. , Abouraddy Ayman F.
Published: September 2020

We construct an alignment-free, planar optical system consisting of diffraction gratings and micro-prism array that pre-conditions near-infrared sunlight for broadband omni-resonant enhancement of a solar cell photocurrent.
Geometric Deep Learning Unlocks the Underlying Physics of Nanostructures
Authors: Kiarashinejad Yashar , Zandehshahvar Mohammadreza , Abdollahramezani Sajjad , Hemmatyar Omid , Pourabolghasem Reza , Adibi Ali
Published: September 2020

We present a learning-based technique to develop a reliable tool for discovering the underlying physics and feasibility of achieving different type of responses in electromagnetic nanostructures.
Photonic discrete-time quantum walks using spatial light modulators
Authors: Puentes Graciana , Neves Leonardo
Published: September 2020

We report a novel scheme for photonic discrete-time quantum walks, using transverse spatial modes of photons and programmable spatial light modulators (SLM). Our scheme enables simulation of arbitrary steps, only limited by the SLM resolution.
Stronger Quantum Contextuality
Authors: Qi Wen-Rong , Zhou Jie , Kong Ling-Jun , Tu Chenghou , Li Yongnan , Cabello Adán , Chen Jing-Ling , Wang Hui-Tian
Published: September 2020

We theoretically introduce a family of Hardy-like proofs which lead to stronger noncontextuality inequalities than that of extended KCBS. Meanwhile, we experimentally verify the simplest case of Hardy-like proof based on a fourdimensional photonic system.
Generation of intense single-cycle pulse in the air based on all solid-state system
Authors: Seo Meenkyo , Tsendsuren Khurelbaatar , Mitra Sambit , Kling Matthias , Kim Dongeon
Published: September 2020

We use thin solid plates in a double stage multi-plate configuration to produce high- contrast, intense single-cycle pulse at 3 kHz. Generated spectrum spans from 400 to 1000 nm at - 20 dB intensity level. Output pulses are compressed down to 2.6 fs (transform-limit 2.55 fs) with an energy of 0.235 mJ.
Proposal of Chip-Scale Generation and Verification of Photonic Dimers
Authors: Kim Juhyeon , Mastropietro Donato , Steel Duncan , Shen Jung-Tsung , Ku Pei-Cheng
Published: September 2020

A semiconductor chip to generate and verify the photonic dimers, a quantum photonic state, is proposed and analyzed, even in the limit of a low efficiency.
Nonperiodic optical superlattice lithium niobate waveguides for the generation of polarization entanglement
Authors: Chung Hung-Pin , Lugani Jasleen , Su Wen-Chiuan , Kumar Pawan , Le Yang-Teng , Pertsch Thomas , Setzpfandt Frank , Chen Yen-Hung
Published: September 2020

We implement a nondegenerate polarization-correlated photon-pair source on titanium-diffused nonperiodically-poled lithium niobate waveguides. The nonperiodic domains are optimized using genetic algorithm to maximize and equalize efficiencies of the spontaneous parametric down-conversion processes.
Time-Domain Analysis on the Impacts of Chirp and Walk-Off in Picosecond Pulsed Squeezing
Authors: Taguchi Yoshitaka , Ozeki Yasuyuki
Published: September 2020

We investigate the relation between the squeezing level, chirp parameter of pulses, and the effect of group velocity difference in nonlinear crystals through time-domain analysis, which realizes straightforward evaluation of picosecond pulsed squeezing.
Toward Generation of Spatially-Entangled Photon Pairs in a Few-Mode Fiber
Authors: Shamsshooli Afshin , Guo Cheng , Parmigiani Francesca , Li Xiaoying , Vasilyev Michael
Published: September 2020

We describe a novel scheme for spatial-mode-entangled photon-pair generation in a few-mode fiber. We experimentally verify the underlying inter-modal parametric processes with two-mode classical signal input and demonstrate high mode purity of the generated idler.
Low-cost spectroscopy of individual quantum dots
Authors: Qiu Jiawei , Bharadwaj Divya , Anderson Paul , Malik Sonell , Semnani Behrooz , Zeeshan Mohd , Poole Philip , Dalacu Dan , Reimer Michael , Bajcsy Michal
Published: September 2020

We present spectroscopy measurements of individual InAsP quantum dots in photonic nanowires [1] using (i) a home-build Czerny Turner spectrometer with an astronomy camera and (ii) an economical sub-picometre laser wavemeter from MOGLabs®.
Generation of Telecom Band Photon Pairs with Factorable Spectrum by Using Few-Mode Fiber
Authors: Cui Liang , Wang Jinjin , Liu Xiaodong , Li Xiaoying
Published: September 2020

We demonstrate that telecom band photon pairs with a factorable joint spectrum can be generated via inter-modal spontaneous four-wave mixing in a two-mode few-mode fiber supporting the LP01 and LP11 spatial modes.
High Harmonic Spectroscopy of Circularly Polarized High Harmonic Generation Process
Authors: Kaneshima Keisuke , Ando Takuto , Sekikawa Taro
Published: September 2020

We studied the phase properties of circularly polarized high harmonics (CP-HHs) via interferometric measurements using a mixed gas. The results showed that the phase properties of CP-HHs are well described by a semiclassical model.
Measurement technique of unpasteurized Japanese Sake freshness by Raman spectroscopy
Authors: Abe Tetsuya , Ogawa Takayo , Wada Satoshi
Published: September 2020

We proposed a method to inspect the quality of sake from the ethanol and glucose content of sake, and showed that it can be quantified by Raman spectrometiy with calibration curve accuracy, R2 = 0.992 Ethanol), R2 = 0.932 (Glucose).
On-chip mode-controlled waveguiding and versatile multiwavelength light routing using chip-integrated dielectric metasurface for arbitrary polarizations
Authors: Meng Yuan , Liu Zhoutian , Wang Ride , Qi Tiancheng , Hu Futai , Wu Qiang , Xiao Qirong , Bae Sang-Hoon , Kim Hyunseok , Gong Mali
Published: September 2020

A comprehensive design strategy using waveguide-integrated-metasurface is proposed for versatile on-chip light-coupling. The coupling-direction, operation-wavelength and excitedmode-type are configurable at will for arbitrary polarizations, with high efficiency of 67% and directivity over 20 dB.
Low fiber-to-fiber loss, large bandwidth and low drive voltage lithium niobate on insulator modulators
Authors: Pan Ying , Sun Shihao , Xu Mengyue , He Mingbo , Yu Siyuan , Cai Xinlun
Published: September 2020

We demonstrate a thin-film LiNbO3 Mach-Zehnder modulator with polymer edge coupler. The modulator exhibits a half-wave voltage of 2 V, insertion loss less than 5 dB and modulation speed up to 128 Gb s-1.
A single microring resonator for measuring waveguide losses
Authors: Shoman Hossam , Jayatilleka Hasitha , Jaeger Nicolas A. F. , Shekhar Sudip , Chrostowski Lukas
Published: September 2020

We present a compact, single microring resonator with a tunable coupler to measure waveguide losses. The method is demonstrated by extracting the propagation losses of 550 nm and 600 nm wide SOI rib waveguides.
Photonic integrated circuits with bound states in the continuum
Authors: Yu Zejie , Xi Xiang , Ma Jingwen , Tsang Hon-Ki , Zou Chang-Ling , Sun Xiankai
Published: September 2020

We experimentally demonstrated photonic integrated circuits with bound states in the continuum by patterning low-refractive-index waveguides on a high-refractive-index substrate. We also demonstrated high-Q microcavities, directional couplers, and electro-optic modulators working under this principle.
Two Microwave Vector Signals Transmission Using Single DD-MZM Modulation and Optical Heterodyne Detection
Authors: Cai Yuancheng , Gao Xiang , Ling Yun , Xu Bo , Qiu Kun
Published: September 2020

Utilizing single DD-MZM modulation and optical heterodyne detection based on a single-ended photodiode, two identical frequency 5 Gbaud 16-QAM signals can be successfully recovered over 100-km SSMF with only 0.6 dB receiver sensitivity penalty.
Experimental Evolutionary Optimization of an Active Multimode Interferometer
Authors: van Niekerk Matthew , Starling David J. , Howland Gregory A. , Leake Gerald , Antohe Alin , Binti Siti , Coleman Daniel , Smith A. Matthew , Tison Christopher C. , Fanto Michael L. , Preble Stefan F.
Published: September 2020

Compact, re-configurable integrated photonic devices are important for communications and computing applications. In this work, we demonstrate an integrated silicon photonic tunable multimode interferometer with > 25 dB tunabilty per port, optimized experimentally with an evolutionary algorithm.
Gallium- and Silicon Nitride-Based Photonic Integrated Circuits for Visible Wavelengths
Authors: Arefin Riazul , Ramachandra Sujit , Jung Hyemin , Hasan Syed M. N. , You Weicheng , Dwivedi Sarvagya , Arafin Shamsul
Published: September 2020

Photonic integration of GaN and Si-SiN platforms at the shortest visible wavelength is reported. Maximum theoretical coupling efficiencies up to 51% and 24% for a vertical grating coupler (fiber-chip) and hybrid integration, respectively, are achieved.
Guided-Wave-Driven Photonic Integrated Metasurface Holograms
Authors: Ding Yimin , Duan Yao , Chen Xi , Huang Haiyang , Guo Xuexue , Ni Xingjie
Published: September 2020

Widely adopted holographic projection technique of light field requires high level of integration and versatility in various areas. We demonstrated integrated optical holographic devices with wavelength-multiplexing based on a photonic integrated metasurface.
Self-reconfigurable Field Programmable Photonic Gate Arrays Using First-order Optimization Techniques
Authors: López Aitor , Pérez Daniel , Das Mahapatra Prometheus , Capmany José
Published: September 2020

We demonstrate a novel technique for the automated synthesis of photonic structures in a field-programmable photonic gate array using first-order optimization techniques and defining customized cost functions as per their main figures of merit.
Scalability of Universal Nanophotonic Processing Circuits based on Multi-Plane Light Conversion
Authors: Tanomura Ryota , Tang Rui , Tanemura Takuo , Nakano Yoshiaki
Published: September 2020

Universal linear processing circuit based on multi-plane light conversion, comprising multiport directional couplers, is demonstrated to exhibit excellent fabrication tolerance even at increased scale, owing to its unique all-to-all unitary coupling at every layer.
Demonstration of on-chip hybrid (de)multiplexer with 4×32 channels for simultaneous mode- and wavelength-division multiplexing
Authors: Cao Xiaoping , Zheng Shuang , Cui Feng , Wang Jian
Published: September 2020

We demonstrate on-chip monolithically integrated hybrid (de)multiplexer with 4x32 channels for simultaneous mode- and wavelength-division multiplexing for ultra-large capacity optical interconnect link. The chip consists of 4-channel mode (de)multiplexer and 32-channel arrayed waveguide grating.
Speckle-Based Optical Waveguide Reservoir Computer for Blind Signal Classification
Authors: Luengo-Kovac Marta , Paudel Uttam , Shaw T. Justin , Valley George C.
Published: September 2020

An opto-electronic reservoir computer based on a light valve, multimode fiber speckle, and a camera combined with back-end signal processing experimentally performs blind signal classification for return-to-zero and non-return-to-zero communications signals at low signal-tonoise ratio.
Construction of a Multi-Wavelength Unitary Operator via Cascaded Optical Resonators
Authors: Park Taewon , Jeong Youngjae , Yu Kyoungsik
Published: September 2020

In universal linear optics, programmable photonic circuits perform an arbitrary linear transformation by the sequential multiplication of two-level achromatic unitary operators. Based on cascaded optical resonator-based building blocks, we construct an arbitrary multi-wavelength unitary operator.
Efficient Nonlinear Activation Function in Optical Neural Network
Authors: Zhang H. , Wan L. X. , Gu M. , Jiang X. D. , Thompson J. , Cai H. , Paesani S. , Santagati R. , Laing A. , Lo G. Q. , Kwong D. L. , Kwek L. C. , Liu A. Q.
Published: September 2020

An efficient nonlinear activation function for optical neural network is proposed and demonstrated by executing complex-valued algorithms and intensity measurement. Great learning capability are achieved by the inherent properties of the complex-valued optical neural network.
Low-Power SiN Thermo-Optic Phase Modulator Operating in Red Visible Wavelength Range
Authors: Idres Samer , Hashemi Hossein
Published: September 2020

We demonstrate a geometrically-optimized, silicon nitride, thermo-optic phase modulator, with a record-low P2n = 10.7 mW, operating in the red visible wavelength range that is fabricated in a commercial foundry silicon photonics process.
Single-shot, Multiple I/O Photonic Chip to Fiber Array Packaging Using Fusion Splicing
Authors: Nauriyal Juniyali , Song Meiting , Granados-Baez Marissa , Zhang Yi , Cardenas Jaime
Published: September 2020

We show a novel multiple I/O photonic packaging method for 4 fiber array using fusion splicing. We demonstrate a minimum loss of 2.5dB per facet with a variation of +/-0.1dB through a 4-fiber array.
Simulation of Femtosecond Laser Induced Photoionization Dynamics of Multilayer dielectric Thin Films
Authors: Zhang Simin , Talisa Noah , Menoni Carmen S. , Gruzdev Vitaly E. , Chowdhury Enam
Published: September 2020

Interaction of HfO2/SiO2-based multilayer thin films and 10-, 100-fs high intensity laser pulses are simulated using finite-difference time-domain method coupled with Keldysh ionization model to assist in design of damage resistant ultrabroad-band optics.
Scan-less Dispersion Spectroscopy with Single-shot DualHeterodyne Mixing and Optical Frequency Comb
Authors: Nasrin Sultana , Tada Hiroaki , Shioda Tatsutoshi
Published: September 2020

High-speed dispersion spectroscopy has been developed with wide dispersion range, while avoiding an increase in imprecision, by 1.4- and 50 GHz frequency intervals parallel processing of single-shot dual-heterodyne mixing combined with an optical frequency comb.
Efficient Kerr comb generation aligned with ITU-T grid for DWDM telecom applications
Authors: Wada Koshiro , Fujii Shun , Kumazaki Hajime , Ohtsuka Tamiki , Sota Shota , Kawanishi Satoki , Tanabe Takasumi
Published: September 2020

We demonstrated efficient Kerr comb generation in an ultra-high Q MgF2 with an output power of 0 dBm/channel that is aligned with a 25 GHz ITU-T grid suitable for DWDM telecom applications.
Tailoring group-velocity dispersion in microspheres with alumina coating
Authors: Inga Marvyn , dos Santos Lais Fujii , da Silva Filho Jose M. C. , Espinel Y. A. V. , Marques Francisco C. , Alegre Thiago P. M. , Wiederhecker Gustavo S.
Published: September 2020

We experimentally demonstrate that the group-velocity dispersion of silica microspheres can be engineered by coating it with nanometer-thick layers of alumina (Al2O3). The ultra-high optical quality factor (> 107) achieved allows for the generation of optical frequency combs.
Nonlinear absorption measurements of aza- borondipyrromethene dyes
Authors: Chang Hao-Jung , Faryadras Sanaz , Munera Natalia , Benis Sepehr , Bondar Mykhailo V. , David Sylvain , Maury Oliver , Berginc Gerard , Chantal Andraud , Hagan David J. , Van Stryland Eric W.
Published: September 2020

We study the nonlinear absorption properties of aza-borondipyrromethene dyes using the Z-scan and transient absorption methods. Near 1200 nm, excited-state absorption due to two-photon excitation appears, which is more pronounced in the brominated dyes.
Nanoporous Gold Nanoleaf as Tunable Metamaterial
Authors: Rout S. , Qi Z. , Biener M. , Courtwright D. , Adrien J. , Shahabuddin M. , Bonner C. E. , Noginova N. , Noginov M. A.
Published: September 2020

We have studied optical properties of single and multi-fold nanoporous gold leaf metamaterials and demonstrated that they can be controlled with applied voltage and dielectric environment.
3D printed glass preforms for optical fibers with nonequilibrium cross-sections
Authors: Zheng Mengxin , de Lima Camila Faccini , Koraganji Veda Narayana , Gumennik Alexander
Published: September 2020

Considering the demand for increasing complexity in optical fiber cross-sections, we present a novel approach for glass perform fabrication based on 3-D printing and show that it can produce glass preforms with non-equilibrium cross-sections.
On the Modulation of a Random Feedback Laser Emission
Authors: Tovar Pedro , Lima Bismarck Costa , von der Weid Jean Pierre
Published: September 2020

We present a novel technique to control a half-open cavity laser emission. Fast temporal phase variation acting as an active Q-switch enables controlled pulsed emission of an SOA-based random feedback laser.
Effect of Double-Lattice Pitch in Type-I Quantum Well Mid-Infrared Photonic-crystal Surface-Emitting Lasers
Authors: Huang Yu Hsun , Cheng Su Ling , Lin Gray , Lin Sheng-Di , Sun Kien-Wen
Published: September 2020

We demonstrate an optically-pumped mid-infrared InGaAsSb/AlGaAsSb type-I QW surface-emitting laser operated at 2.26 pm using double-lattice photonic ciystal structures. Light outyut intensity of the device with double-lattice struchrres was enhanced by an order of magnihrde than that of single-holes.
Demonstration of 1300 nm Directly Modulated DBR Lasers Based on V-shaped High-Order Slotted Surface-Grating
Authors: Sun Wei , Wei Shuangzhi , Liu Gonghai , Dai Xiangyang , Liu Jia , Tan Su , Lu Qiaoyin , Donegan John F. , Guo Weihua
Published: September 2020

We present 1.3pm regrowth-free directly-modulated DBR lasers based on V-shaped slotted surface-gratings through standard photolithography. The fabricated laser has achieved the threshold-current ~12mA, SMSR ~50dB from 0°c to 50°c and 3-dB bandwidth ~12GHz.
Primary Processes in ITO/TPD/Alq3/Al OLEDs at Low Voltage: On the Aging of OLEDs
Authors: Ratsimbazafy Fanomezantsoa Louis M. , Gauvin Serge
Published: September 2020

Current-voltage measurements at low voltage indicate that ions move in OLEDs on the first I-V scan. On subsequent scans, molecular rotations result in weak current spikes. As expected, neither current leads to luminescence.
Investigation of High Temperature LED and Photodetector from InGaN/GaN MQWs
Authors: Sabbar Abbas , Madhusoodhanan Syam , Tran Huong , Dong Binzhong , Wang Jiangbo , Mantooth Alan , Yu Shui-Qing , Chen Zhong
Published: September 2020

InGaN/GaN multiple quantum well LED structure was studied for the possible integration as a detector in future power electronics applications. The electroluminescence (EL) and spectral response were measured from 77 K to 800 K.
Intersubband Transitions in GaNZAl0.5Ga0.5N Quantum Wells on a-Plane and m-Plane GaN Substrates
Authors: Xu Jiaming , Monavarian Morteza , Nookala Nishant , Fireman Micha N. , Qwah K. S. , Speck James S. , Belkin Mikhail A.
Published: September 2020

We experimentally characterize mid-infrared intersubband transitions in identical Al0.5Ga0.5N/GaN heterostructures grown on a- and m-plane GaN substrates. The absorption peaks of the m-plane samples are 10 to 40% narrower than that of the a-plane samples.
Shallow-Mesa InP Avalanche Photodiode with Ultralow Dark Current
Authors: Zhang Jingchang , Han Yaru , Xiong Bing , Luo Yi , Sun Changzheng , Wang Lai , Wang Jian , Han Yanjun , Hao Zhibiao , Li Hongtao , Yu Jiadong
Published: September 2020

A shallow-mesa InP avalanche photodiode is proposed and fabricated by a simple dry etching process. The device exhibits a remarkably low dark current of 4 pA at unit gain and a high gain of 320.
Fine-pixel Quantum Dot Dispense on Micro-LEDs
Authors: Huang Yu-Ming , Liang Kai-Ling , Tsai Yi-Lin , Kuo Wei-Hung , Fang Yen-Hsiang , Huang Chung-Ping , Kuo Hao-Chung , Lin Chien-Chung
Published: September 2020

We report the fine-pixel quantum dot (<5mm) deposited on micro-LED chips directly. The electrical and optical characterization shows 35% color conversion efficiency and area-dependent QD emission intensity.
Innovative concept of tunable ECDLs based on MEMS in the NIR and MIR spectral regime
Authors: Hoppe Morten , Rohling Hanna , Schmidtmann Sebastian , Tatenguem Herve , Grahmann Jan , Milde Tobias , Schanze Thomas , Sacher Joachim R.
Published: September 2020

An innovative ECDL concept based on MEMS technology in NIR and MIR is presented. Results of laser performance and its application as well as the possibility of ultra-fast tuning through MEMS actuators are shown.
Timing anomalies in comb-based optical two-way time-frequency transfer (O-TWTFT)
Authors: Swann W. C. , Bodine M. I. , Ellis Jennifer L. , Hannah Emily D. , Sinclair L. C. , Newbury N. R. , Deschênes J.-D.
Published: September 2020

Comb-based O-TWTFT provides exemplary performance in transferring precision timing over km-scale turbulent atmospheric paths. However, its performance through strong turbulence is not fully understood. Here we investigate transient timing deviations associated with
High power single mode triple-ridge waveguide semiconductor laser
Authors: Zhao Xiaolei , Zeng Siwei , Zhu Yeyu , Wu Ying , Zhu Lin
Published: September 2020

We propose a high-power, single transverse mode, edge-emitting diode laser by constructing a triple-ridge waveguide structure. Two integrated lossy auxiliary waveguides are utilized to suppress the unwanted high order modes in the main waveguide.
45 GHz VCSEL with Multiple Transverse-Coupled-Cavities
Authors: Heidari Elham , Dalir Hamed , Ahmed Moustafa , Teimourpour Mohammad H. , Sorger Volker J. , Chen Ray T.
Published: September 2020

We propose a VCSEL laterally coupled to multiple-cavities providing modulation bandwidth beyond the relaxation-oscillation-frequency. We show a 3dB modulation bandwidth of 45 GHz, five times greater than its conventional VCSEL fabricated on the same epi-wafer.
CCD-Thermoreflectance Imaging of Self-Heating in 1.5 Semiconductor Laser Diodes
Authors: McKenna Robert , Naimi Sepideh T. , Corbett Simon , McCloskey David , Donegan John F.
Published: September 2020

The surface temperature distribution of 1.5 pm multi-section slotted single-mode semiconductor lasers is determined experimentally using high resolution CCD-TR microscopy. The surface temperature, thermal spreading between sections, longitudinal and lateral temperature profiles are reported.
Observation of Polarization Singularities in a Brewster-Reflected Paraxial Beam
Authors: Debnath Anirban , Viswanathan Nirmal K.
Published: September 2020

Using a simulated model of a diverging paraxial beam reflected at a plane dielectric interface, we show that the Brewster-reflected beam manifests phase and polarization singularities.
Nonlinear computer-generated optical holograms in lithium niobate crystal by femtosecond laser micromachining
Authors: Zhu Bing , Liu Haigang , Liu Yi’an , Yan Xiongshuo , Liu Xiangmin , Chen Yuping , Chen Xianfeng
Published: September 2020

An efficient n onlinear c omputer-generated o ptical h olograms t echnique has been demonstrated in lithium niobate crystal, which fabricated by femtosecond laser pulses. The birefringence progress is used to provide the longitudinal phase matching of the wave vectors.
Development of a Sub-microsecond Broadband Pulsed Laser for Cooling Positronium
Authors: Tajima Y. , Yamada K. , Shu K. , Ishida A. , Asai S. , Kuwata-Gonokami M. , Chae E. , Yoshioka K.
Published: September 2020

We develop a unique deep-ultraviolet pulsed laser proposed for achieving laser cooling of positronium. It fulfills a wide bandwidth and a long pulse duration for atoms with a small mass and a finite lifetime.
Third-harmonic Generation from Multilayer Graphene on Silicon Nitride Guided Mode Resonance Structures
Authors: Menon Sruti , Dandu Medha , Deka Jayanta , Majumdar Kausik , Raghunathan Varun
Published: September 2020

We report third-harmonic generation enhancement with strong polarization-dependence from multilayer graphene on silicon nitride guided-mode resonance structures. These gratings are a promising passive platform with weak inherent nonlinearity for integration with strong nonlinear layered materials.
Nonlinear optical properties of metal halide perovskite single crystals
Authors: Kriso Christian , Stein Markus , Haeger Tobias , Pourdavoud Neda , Gerhard Marina , Rahimi-Iman Arash , Riedl Thomas , Koch Martin
Published: September 2020

We measure nonlinear refraction and absorption of a CH3NH3PbBr3 single crystal with the Z-scan technique. Our results provide the first reference of the intrinsic, ultrafast nonlinear refractive index in the metal halide perovskite material class.
On-Chip Fabry-Perot Bragg Grating Cavity Enhanced Four-Wave Mixing
Authors: Xie Shengjie , Zhang Yang , Hu Yiwen , Veilleux Sylvain , Dagenais Mario
Published: September 2020

We report the generation of a Fabry-Perot Bragg grating cavity enhanced four-wave mixing signal with a conversion efficiency of -37.7 dB experimentally. A thermal-tuning based dispersion compensation technique is also demonstrated for zero dispersion implementation.
Dynamical Refraction of Space-time Wave Packets
Authors: Yessenov Murat , Bhaduri Basanta , Abouraddy Ayman F.
Published: September 2020

We show that introducing tight spatio-temporal correlations into a wave-packet unveils remarkable dynamical refractive phenomena, such as group-velocity invariance with respect to the refractive index and group-delay cancellation while traversing a bilayer of optical materials.
Gouy phase shift contribution on efficient SHG at noncentrosymmetric materials interfaces
Authors: Gomes Jorge A. C. , Barbano E. C. , Zilio S. C. , Misoguti L.
Published: September 2020

We observed that applying tightly focused laser beam, Gouy phase shift plays important role on efficient SHG at interfaces of both isotropic and anisotropic noncentrosymmetric materials. This effect is similar to THG at materials interfaces.
Kerr Microcomb Generation With Self-injection Locked Distributed Feedback Diode Laser
Authors: Hao Liyun , Jia Kunpeng , Wang Xiaohan , Guo Jian , Xie Zhenda
Published: September 2020

We experimentally demonstrate a Kerr frequency comb from a fiber Fabry-Pérot(FP) microresonator that is pump by a self-injection locked distributed feedback diode laser. The comb span exceeds 80 nm around 1550 nm, with beatnote linewidth of 370Hz.
Multi-Soliton Generation in a Femtosecond Degenerate Optical Parametric Oscillator
Authors: Ning Chengxiao , Zhang Zhaowei
Published: September 2020

Multi-soliton formation is observed theoretically and experimentally in a femtosecond degenerate optical parametric oscillator (OPO) with positive residual third-order dispersion and relatively high pump power.
Cascaded Third Harmonic Generation in Dielectric Metasurfaces
Authors: Gennaro Sylvain D. , Addamane Sadhvikas , Reno John , Vabishchevich Polina , Sinclair Michael B. , Brener Igal
Published: September 2020

In this work, we investigate cascaded third harmonic generation in a dielectric metasurface by exploiting high quality factor Fano resonances obtained using broken symmetry unit cells.
A soliton micro-truck
Authors: Crespo-Ballesteros Manuel , Sumetsky Misha
Published: September 2020

We design a miniature device enabling conveyance of weak localized states of light along an optical fiber employing a whispering gallery soliton micro-truck, which slows down for loading and unloading at designated stops.
Limit on Differential Group Delay Achievable by Space-Time Wave Packets
Authors: Yessenov Murat , Mach Lam , Bhaduri Basanta , Mardani Davood , Kondakci H. Esat , Atia George K. , Alonso Miguel A. , Abouraddy Ayman F.
Published: September 2020

We investigate the effects of the spectral uncertainty on the maximum differential group delay (DGD) for a finite-energy space-time wave-packet, showing the maximum DGD that can be obtained with respect to a reference pulse at c.
Tunable stimulated Brillouin scattering by dual lasers pumping in a WGM microcavity
Authors: Chen Zhenmin , Li Qian , Fu H. Y.
Published: September 2020

High order cascaded stimulated Brillouin scattering (SBS) is achieved when a microcavity is pumped with a 1550-nm tunable laser. The SBS can be tuned by a pump laser assisted with a heating laser, which provides a new approach to generate SBS in whispering gallery mode microresonators.
Discrete Cosine Single-pixel Salient Object Detection Base on Deep Learning via Fast Binary Illumination
Authors: Li Yonghao , Shi Jianhong , Sun Lei , Wu Xiaoyan , Zeng Guihua , Sun Jun , Tian Lulu , Su Feng
Published: September 2020

Discrete cosine single-pixel imaging with binary illumination can fastly reconstruct a scene where area of the salient object can be detected rapidly and accurately even in the case of undersampling, utilizing deep learning model.