bluuebunny/crossref_metadata_2025 huggingface dataset:
All electromagnetic scattering bodies are matrix-valued oscillators
Authors: Zhang Lang , Monticone Francesco , Miller Owen D.
Published: January 2023

We show that a special scattering matrix, the “T matrix,” encodes causality and passivity in any electromagnetic scatterer. We use it to develop a general theory of the ultimate limits to near-field radiative heat transfer.
Optical Control of Magnetic Configuration of an antiferromagnetic CuMnAs
Authors: Farkas Andrej , Olejnik Kamil , Surynek Miloslav , Nemec Petr , Novak Vit , Jungwirth Tomas
Published: January 2023

Quenching of CuMnAs was recently discovered using electrical and train of optical pulses. In this contribution, we report the single laser pulse quench switching and erasing using different pulse parameters to improve the response.
Femtosecond Pump-Probe scattering from “Hot” Kerr Index of Refraction in Acetone and Methanol
Authors: Meyer Henry J. , Alfano Robert R.
Published: January 2023

Femtosecond time-resolved pump-probe Kerr index scattering is used to give measurements of the thermalization and decay routes of the motion states responsible for the Kerr effect in Acetone and Methanol.
High-resolution photoacoustic tomography for fingerprint and vascular imaging
Authors: Zheng Wenhan , Lee Diana , Xia Jun
Published: January 2023

We developed a new fingerprint imaging system which can capture both fingerprints and underlying vascular structures at a high spatial resolution. A 3D image was obtained by scanning the linear array over the fingertip.
Piezoelectrically enhanced stimulated Brillouin scattering in LiNbO3 thin films
Authors: Örsel Oğulcan E. , Bahl Gaurav
Published: January 2023

We show that the stimulated Brillouin scattering is radically enhanced in LiNbO3 thin films due to piezoelectrically induced electro-optic modulation. We find that, in a ridge waveguide, it is maximized for Y-40o reaching 1000W–1m–1.
Engineered Second-order Nonlinearity in Silicon Nitride
Authors: Zhang Yi , Nauriyal Juniyali , Song Meiting , He Xiaotong , Granados-Baez Marissa , Cardenas Jaime
Published: January 2023

We induce a permanent second order nonlinearity of 0.24pm/V in silicon nitride via electrical poling at a high temperature. We demonstrate electro-optic response usable for modulation in the engineered silicon nitride device up to 15 GHz.
Dynamically tunable achromatic polarization rotator
Authors: Chang Li-Min , Guo Duan-Yi , Chen Chen-Wei , Jau Hung-Chang , Lin Tsung-Hsien
Published: January 2023

In this work, we develop liquid crystal-based achromatic polarization rotators with continuous 90o- and 180o- rotation angles. Moreover, the output polarization states remain a high degree of linear polarization.
Geminate exciton fusion fluorescence as a probe of triplet exciton transport after singlet fission
Authors: Biaggio Ivan , Wolf Eric A.
Published: January 2023

The transport mechanisms leading to spatial separation of triplet pairs after singlet exciton fission can be investigated using the photons emitted if the triplet excitons meet again. Dimensionality of transport can strongly affect fission efficiency.
Arbitrary-angle Split-detection Using a Rotational Dove Prism in Adaptive Optics Scanning Light Ophthalmoscopy
Authors: Woehlke Ruth E. , Gaffney Mina , Yu Ching Tzu , Follett Hannah M. , Guillaume Chloe , Carroll Joseph , Cooper Robert F.
Published: January 2023

An adaptive optics scanning light ophthalmoscope was enhanced with a Dove prism to obtain arbitrary angle split-detection images. This application allows for a low-cost enhancement of extant systems and facilitates the resolution of retinal features.
Quantum delay metrology with complete frequency-bin Bell basis synthesizer
Authors: Seshadri Suparna , Lu Hsuan-Hao , Leaird Daniel E. , Weiner Andrew M. , Lukens Joseph M.
Published: January 2023

We generate all four frequency-bin Bell states via single and dual spectral-line pumping of spontaneous parametric down-conversion and demonstrate their sensitivity to the sum and difference of entangled-photon delays using spectral interferometry.
Multipartite Entangled Light From Above-Threshold Parametric Oscillation in Hot Rubidium Atoms
Authors: Guerrero A. Montana , Rincon Celis R. L. , Nirala G. , Meireles T.L. , Nussenzveig P. , de Andrade G. C. B. , Martinelli M. , Marino A. M. , Florez H. M.
Published: January 2023

We demonstrate entanglement among four sideband spectral modes of twin beams generated in hot rubidium vapor. Parametric oscillation from high gain in a low-finesse cavity enables tailoring quantum states useful for information protocols.
Zn-Porphyrin Blended Anti-Solvent Treatment for Grain Boundary Passivation of Perovskite Solar Cells
Authors: Parida Bhaskar , Soopy Abdul Kareem Kalathil , Shahulhameed Hiba , Najar Adel
Published: January 2023

We report the passivation of FA0.97MA0.03PbI3 perovskites grains by Zn-porphyrin blended anti-solvent treatment. The efficiency was improved to 16.75% because Zn-porphyrin passivated the grain-boundary defects and improved hole transport across the perovskite film.
Effect of Gaussian Schell Model Pulses on Squeezed State and Single Photon Subtracted Squeezed Vacuum State
Authors: Rao Sakshi , Sharma Preeti , Kanseri Bhaskar
Published: January 2023

This study investigates the effect of a partially temporally coherent pump on the nonclassical properties of squeezed vacuum and single-photon subtracted squeezed vacuum state, which could be useful for quantum communication, metrology, and sensing.
Two-Octave Supercontinuum Generation in Ring-Core Fiber with Graded-Index Profile
Authors: Yang Jian , Liu Yuanpeng , Fang Yuxi , Geng Wenpu , Pan Zhongqi , Yue Yang
Published: January 2023

We investigate the dispersion and nonlinear properties of a graded-index ring-core fiber (GIRCF) with different shape factors. An over two-octave supercontinuum can be formed in the GIRCF with a shape factor of 2.
Micro-ring Resonator for Complex Refractive Index Detection at Multiple Wavelengths
Authors: El Shamy Raghi S. , Swillam Mohamed A. , Li Xun
Published: January 2023

We propose micro-ring resonator that detects both the real n and the imaginary k part of the medium refractive index at different wavelengths. Using this sensor the substances present in the medium can be specified.
Polarization-induced modulations in Stokes scintillations
Authors: Singh Hemant Kumar , Arya Gaytri , Kanseri Bhaskar
Published: January 2023

We experimentally investigated the effect of polarization on Stokes scintillation for a generalized electromagnetic Gaussian-Schell model beam. The study remarkably provides a way to control the Stokes scintillations by varying the polarization properties of the source.
Thermal-aware Multi-Quantum Well Laser
Authors: De Souvaraj , Das Ranjan , Singh Karanveer , Mandalawi Younus , Kleine-Ostmann Thomas , Schneider Thomas
Published: January 2023

We design a thermally insulated multi-quantum well laser with an air-filled deep trench to boost the laser gain profile. The improvement in the peak gain and differential gain is demonstrated at different carrier densities.
Multi-wavelength achromatic metasurface deflector for visible light using inverse design
Authors: Choi Taewon , Kim Changhyun , Lee Byoungho
Published: January 2023

In this study, we propose an achromatic metasurface deflector operating at primary color wavelengths of 470 nm, 550 nm, and 660 nm. An inverse design method based on topology optimization is utilized for metasurface design.
Learning Bit-Gates With A Resonant Photonic Linear Neuron
Authors: van Niekerk Matthew , Rizzo Anthony , Rivera Hector Rubio , Leake Gerald , Coleman Daniel , Tison Christopher , Fanto Michael , Bergman Keren , Preble Stefan
Published: January 2023

We present a new architecture for performing learning-based tasks directly on an integrated photonic chip. We experimentally realize logical 2-bit gates AND, OR, and XOR to accuracies of 96.8%, 99%, and 98.5%, respectively.
Ultra-wideband Nonreciprocal Acousto-optic Modulators in Silicon Photonics
Authors: Zhou Yishu , Cheng Haotian , Ruesink Freek , Gertler Shai , Pavlovich Margaret , Starbuck Andrew L. , Leenheer Andrew J. , Pomerene Andrew T. , Trotter Douglas C. , Dallo Christina , Musick Katherine M. , Garcia Eduardo , Reyna Robert , Holterhoff Andrew L. , Gehl Michael , Kodigala Ashok , Eichenfield Matt , Otterstrom Nils T. , Lentine Anthony L. , Rakich Peter
Published: January 2023

We report nonreciprocal wave propagation with ~ 10dB nonreciprocity over a 32 nm optical bandwidth based on inter-band acousto-optic scattering within a silicon photonic waveguide system.
Design of Cantilever Couplers for Fiber-to-Chip Coupling to Lithium Niobate on Insulator Rib Waveguides
Authors: Prabhakar Karan , Reano Ronald M.
Published: January 2023

We present the design of cantilever couplers for fiber-to-chip coupling between standard cleaved single mode optical fiber and lithium niobate on insulator rib waveguides. Modeling shows broadband coupling loss below 0.5 dB at infrared wavelengths.
Development of multi-modal endo-spectroscopic and imaging system for oral cancer screening
Authors: Thapa Pramila , Dewangan Srishti , Bhatt Sunil , Mann Priyanka , Mishra Deepika , Mehta Dalip Singh
Published: January 2023

Development of multi-modal early-stage oral-cancer screening system can reduce the mortality rate of oral-cancer. In the present study, we combined the autofluorescence with fluorescence endoscopic imaging with spectroscopy simultaneously.
Automated Analysis of Terahertz Hyperspectral Images
Authors: Granger Margaret E. , Urrea Alexa , Arnold Dallin T. , Johnson Jeremy A.
Published: January 2023

We automate the analysis of terahertz hyperspectral images to identify distinct sample components. We demonstrate efficacy of our methods for inorganic and biologically-active materials, presenting images from metamaterial and sugar samples.
Sub-diffraction Second Harmonic Generation Microscopy using Particle Swarm Optimized Phase Mask
Authors: Manattayil Jyothsna Konkada , S. Lal Krishna A. , Prosad Asish , Sarkar Purba , Kim Hyunmin , Bhat Ramray , Raghunathan Varun
Published: January 2023

Super-resolution in second harmonic generation microscopy is demonstrated using fabricated multi-step phase masks designed using particle-swarm optimization. Experimentally obtained maximum improvement in resolution of 39% is used for quartz test feature and collagen imaging.
Phase retrieval iterative algorithm for a special object
Authors: Gautam Surya Kumar , Naik Dinesh N
Published: January 2023

Phase retrieval iterative algorithm suffers from non-uniqueness, non-convergence and often shows twin image problem. A case is presented for a special object where PRA reconstructs output free from all the mentioned problems.
Photonics Enabled Real-time Spectrogram for Continuous Signal Processing
Authors: Rowe Connor M.L. , Crockett Benjamin , Azaña José
Published: January 2023

We demonstrate the real-time and gapless computation of the spectrogram of a signal with ultrashort transients of 640 ps using only optical transformations. This demonstrates the applicability to continuous signals without information loss.
Generation Of Orbital Angular Momentum Beams With Enhanced Purity Using Gerchberg-Saxton Algorithm
Authors: Basu Debdutta , Chejarla Suresh , Bhattacharya Shanti , Srinivasan Balaji
Published: January 2023

We experimentally demonstrate the correction of aberrations using the modified Gerchberg-Saxton (GS) algorithm resulting in the generation of Orbital Angular Momentum (OAM) optical beams with 30 % enhancement in the modal purity.
Long-Path Length Optical Cavity for Microfluidic Devices
Authors: Owens McKenna , Argueta-Diaz Victor
Published: January 2023

We present an optical device with a long-path length to be use in optical microfluidic devices. Our device has an OPL of 15 times the cell’s diameter, and is fabricated with PDMS and SU8.
Second Harmonic Generation of Astigmatic Laguerre-Gaussian and Hermite-Gaussian Modes
Authors: Fritsch Amanda Kronhardt , Junior Andre Luiz da Silva Santos , Barbosa Altilano Cristino , Correia Ricardo Rego Bordalo , Khoury Antonio Zelaquett
Published: January 2023

We study the evolution of second harmonic generated fields produced by astigmatic Laguerre-Gaussian (LG) and Hermite-Gaussian (HG) modes. We find that the rules of mode decomposition and topological charge conservation hold after traversing nonlinear media.
Measurements of the Hardness and Young’s Modulus of the Nonlinear Optical Crystals BaGa4S7 and BaGa4Se7
Authors: Exner Ginka , Grigorov Aleksandar , Badikov Valeriy , Petrov Valentin
Published: January 2023

We report hardness and Young’s modulus measurements for two recently developed and very promising non-chalcopyrite mid-IR crystals, BaGa4S7 and BaGa4Se7. The hardness is 556.2 kg/mm2 for the sulfide and 336 kg/mm2 for the selenide compound.
Size- and Shape-Dependent Charge-Carrier Dynamics in Sub-micron Cuprous Oxide Nanoparticles
Authors: Gyawali Sunil , Tirumala Ravi Teja A. , Andiappan Marimuthu , Bristow Alan D.
Published: January 2023

The rate equation associated with recombination dynamics of photoexcited charge carriers in Cu2O nanostructures shows Auger scattering occurs readily in smaller particles and that particle shape affects the onset of higher-order recombination mechanisms.
Ge2Sb2Te5 Enabled Active Switching of Fano Resonance in Tunable Terahertz Metamaterial
Authors: Mishra Prateek , Srivastava Vibhu , Sunny
Published: January 2023

We demonstrate active switching of Fano resonance in a THz metasurface comprised of phase change material/gold patterns. Dynamic interplay between Fano and dipolar resonance attributed to ultrafast phase-transition of Ge2Sb2Te5 promises applications in sensors.
Low-cost optical microscope constructed through a smartphone camera applied to oral cancer diagnosis
Authors: Foiani Letícia Marques Caviola , Almeida Janete Dias , Martinho Herculano da Silva
Published: January 2023

This study centered on the construction of a low-cost microscope using a smartphone camera, employed to diagnosing oral cancer using dried saliva, that could correctly diagnose 73% of the samples that a conventional microscope did.
Nonlocality-Mediated Generation of Spatiotemporal Optical Vortices in Epsilon-Near-Zero Metamaterials
Authors: Novikov V. B. , Murzina T. V.
Published: January 2023

We demonstrate spatiotemporal optical vortices generation by transmission of laser pulses through epsilon-near-zero metamaterial based on metal nanorod array. The heart of proposed approach is phase singularities in transmittance of metamaterial caused by its optical nonlocality.
Study of alkaline metal salts of Trinitroimidazole Using Terahertz Time-domain Spectroscopy
Authors: Koalla Rajesh , Menchu Nagaraju , Thaltiri Vikranth , Chandan G , Naveen P , Chaudhary A.K.
Published: January 2023

The paper reports the terahertz time domain spectroscopy study of alkaline metal salts of Trinitroimidazole such as sodium 2,4,5-trinitroimidazole and potassium 2,4,5-trinitroimidazole between 0.1-3.5 THz range. Also, the refractive index and absorption coefficients are calculated.
Superior Three-Photon Absorption and Ultrafast Nonlinear Photonic Switching Response of Double Perovskite Cs2AgInCl6 Nanocrystals
Authors: Ahmed Md Soif , Lavadiya Sireesha , Nayak Sudhanshu Kumar , Banerjee Dipanjan , Soma Venugopal Rao , Raavi Sai Santosh Kumar
Published: January 2023

Ultrafast third-order nonlinear measurements were performed on undoped and Mn-doped double perovskite Cs2AgInCl6 nanocrystals and superior three-photon absorption and non-linear photonic switching figure of merits are estimated and reported.
Ultrafast Nonlinear Optical Studies of Polycyclic Aromatic Hydrocarbon (PAHs) based Benzo[b]naphtho[1,2,3,4-pqr] Perylene using Femtosecond Z-scan
Authors: Nayak Sudhanshu Kumar , Ahmed Md Soif , Pola Someshwar , Banerjee Dipanjan , Soma Venugopal Rao , Chetti Prabhakar , Raavi Sai Santosh Kumar
Published: January 2023

The ultrafast nonlinear optical properties of Polycyclic aromatic hydrocarbon (PAHs) based benzo[b]perylene derivative named as benzo[b]naphtho[1,2,3,4-pqr]perylene (BNP) are studied using femtosecond Z-scan at 800 nm. A strong three-photon absorption coefficient of 0.56×10-5 cm3/GW2 was observed.
Optimizing the Optical Frequency Comb
Authors: Kaur Gurpreet , Mishra Manoj , Pradhan Rajib , Jana Soumendu
Published: January 2023

We investigate the optical frequency comb for different numbers of cavity solitons in the microcavity of a vertical cavity surface emitting laser having a graphene saturable absorber layer and coupled with a frequency selective feedback.
Analysis of the Frequency Dependence of the Kerr Effect in Diamond using Two-Dimensional Spectroscopy
Authors: Nielson Megan F. , Ho (Enoch) Sin-Hang , Moss Clayton D. , Dominguez Josue , Johnson Jeremy A.
Published: January 2023

Two-dimensional (2D) measurements were performed to examine the frequency dependence of the terahertz (THz) Kerr effect in diamond. Preliminary analysis shows evidence of frequency dependence.
A Unique Strategy to Realize Angle-multiplexed Multifunctional Metadevices
Authors: Sabiha  , Mahmood Nasir , Khaliq Hafiz Saad , Mehmood Muhammad Qasim , Massoud Yehia
Published: January 2023

This paper presents an angle-multiplexed technique that provides a platform to realize unique multifunctional meta-devices. The proposed design strategy is employed to demonstrate the metalenses for an obliquely incident visible light.
Exceptional Points and Topological State-Transfer Phenomena in an Anti-PT-Symmetric Microcavity
Authors: Beniwal Dinesh , Laha Arnab , Ghosh Somnath
Published: January 2023

We investigate an anti-parity-time (APT)-symmetric gain-loss assisted microcavity system based on scattering (S)-matrix formalism and report the fascinating aspects of encircled exceptional points (EPs) toward topological state-transfer applications.
Photon Warpage in Diamonds
Authors: Webb William B.
Published: January 2023

Refractive warping happens to photons in the field-of-warpage extending outside of a material's surface. The fields-of-warpage result from the Unification of Special and General Relativity.
Propagation and transmission of a light beam in a graphene-like metallic photonic lattice
Authors: Wang Kang
Published: January 2023

We study theoretically light beam propagation in a graphene-like metallic photonic lattice, associated to distorted Dirac cones, and discuss the beam transmission in terms of the coupling between the local resonance modes and incident fields.
Improvement in optoelectronic properties of AlGaAs/InGaAs laser in near-infrared region
Authors: Saeed Sana , Usman Muhammad , Ali Shazma
Published: January 2023

Increased aluminum concentration up to 95% in the n-cladding layer in a separate confinement heterostructure improves the optoelectronic performance of arsenide (As) laser diodes (SCH). The lasing threshold has been lowered to 1094.54 A/cm2 from 1132.84 A/cm2.
Soliton trapping with external potential
Authors: Saini Anjali , Jana Soumendu
Published: January 2023

The dynamics of cavity soliton is studied under external periodic potential via Split Step Fourier Method for the purpose of encryption. The key for the encryption would be the dependency of bifurcation on potential.
Nonlinear-Mapping Optimization for Effective Nonlinear- Distortion Compensation through Artificial Neural Network
Authors: Zhang Rui , Wen Feng , Yang Feng , Qiu Kun
Published: January 2023

The optimization procedure on the artificial-neural-network (ANN) has been carried out through selecting the nonlinear-mapping functions. The power threshold of larger than -5.5dBm was obtained for QAM-16 signals when the optimized ANN equalizer applied.
Plasmonic Ring-Resonator-Based Infrared Sensor for RI Change Detection
Authors: Singh Brajraj , Yadav Manisha , Shekhawat Divya Kanwar , Sharma Mohit , Mishra Manoj
Published: January 2023

A compact MIM Plasmonic ring-resonator sensor with a tunnel is investigated using various organic/non-organic analytes for RI detection in the near-infrared region and maximum sensitivity is reported to be 534 nm/RIU at tunnel angle 65o.
Graded Index Nanophotonic Resonator with Improved Sensing Performance
Authors: Dash Diptimayee , Saini Jasmine , Goyal Amit Kumar , MassoudFellow Yehia
Published: January 2023

The proposed work demonstrates the performance evaluation of graded index photonic crystal resonator structure using finite element method. This exhibits generation of lower energy resonating mode having 125% higher sensitivity than conventional resonator structures.
Gas Sensing Based on Mid-Infrared Metasurface Microspectrometer and Machine Learning
Authors: Meng Jiajun , Balendhran Sivacarendran , Sabri Ylias , Bhargava Suresh , Crozier Kenneth B.
Published: January 2023

We perform gas sensing using an infrared metasurface microspectrometer. We train a machine learning classifier by subjecting the microspectrometer to four different gases. We demonstrate the detection of methyl-ethyl-ketone at the permissible exposure limit.
Reconfigurable Microcavity Resonance for Frequency Matching in Nonlinear Optics
Authors: Li Jiaqi , Zhang Yanfeng , Yu Siyuan
Published: January 2023

We theoretically and experimentally study reconfigurable microcavity resonance for frequency matching in nonlinear optics, based on adjustable mode splitting introduced by angular distributed Bragg gratings together with a thermal phase shifter.
Structural Colors Enabled by Multipolar-Modulated Silicon-rich Silicon Nitride Metasurfaces
Authors: Gu Xin , Liang Zhouxin , Zhu Zhaoxiang , Zhou Bo Wang Lidan , Liu Lin , Chen Yujie
Published: January 2023

A multipolar-modulated metasurface based on silicon-rich silicon nitride (SRN) is studied. By adjusting the refractive index of SRN and the height-to-diameter ratio of the nanodisk, the dramatic enhancement in the monochromaticity of reflection spectra can be obtained.
Numerical study on the dependence of the reconstructed image obtained by digital light-in-flight recording by holography on the incident angles of light pulses
Authors: Yamaguchi Ryuki , Nagao Koki , Tsuji Asuka , Inoue Tomoyoshi , Nishio Kenzo , Kubota Toshihiro , Awatsuji Yasuhiro
Published: January 2023

We numerically investigate the influence of the incident angles of both the object and the reference light pulses on the width of the reconstructed image in a digital light-in-flight recording by holography. We confirmed that the width of the reconstructed image gets narrower by increasing the incident angles.
Two-pupil optical heterodyne scanning holographic system with highpass filtering pupils
Authors: Yao Yongwei , Zhang Yaping , Poon Ting-Chung
Published: January 2023

We propose the use of highpass filtering pupils to achieve edge extraction in a two-pupil optical heterodyne scanning holographic system. Preliminary simulation results have shown an effective edge extraction.
Texture Mapping Based on Planar Projection Mapping in fully analytic polygon-based computer generated holography
Authors: Fu Qingyang , Zhang Yaping , Zhang Bing , Poon Ting-Chung
Published: January 2023

We propose the use of planar projection mapping to texture fully analytic 3D affine transformed computer-generated holograms. Simulation results show that this is an effective texture mapping method.
Neural Radiance Field based Light Field Super-resolution in Angular Domain
Authors: Miao Yuan , Liu Chang , He Di , Qiu Jun
Published: January 2023

Using the neural radiance field to represent the light field, by editing the light field to obtain a new perspective between sub-aperture images, we can accomplish the super-resolution of the light field in angular domain.
Femtosecond Laser Produced Silicon Microstructures for Sensing Applications
Authors: Narlagiri Linga Murthy , Satani Sampath Kumar , Rathod Jagannath , Soma Venugopal Rao
Published: January 2023

We demonstrate simple Arduino-based automation for femtosecond laser microfabrication of silicon. We study the effect of this microstructured silicon combined with the plasmonic gold nanostars for sensing applications.
Semi-quantum key distribution in networks with OAM states of light
Authors: Bala Rajni , Asthana Sooryansh , Ravishankar V.
Published: January 2023

We present two semi-quantum key distribution protocols-(i) to share a key among N participants, (ii) to share keys in distinct layers of a network simultaneously with separable orbital angular momentum states of light.
Controlling of topological charge in 2D photonic crystal
Authors: Mohamed Sughra , Hakala Tommi , Wang Jie , Shi Lei
Published: January 2023

We demonstrate lasing from four BICs supported by C4v symmetric PhC slabs. By fine-tuning the parameters of the lattice, we selectively obtain a unique topological charge by bringing the BICs to the wavelength regime.
Development and Validation of a Rapid Inverse Solver for Multiparameter Spectrophotometry Without Integrating Sphere
Authors: Jones Zachary D. , Jin Jiahong , Lu Jun Q. , Hu Xin-Hua
Published: January 2023

We present a new approach for determination of radiative transfer (RT) parameters by a stochastic optimization algorithm combined with local averaging and an objective function for reduction of variance in calculated signals by Monte Carlo simulations validated by measuring 20% Intralipid to determine its RT parameters from 520 to 1000 nm.
Dispersion of Nonlinear Refraction Coefficient in Carbon Dots
Authors: Singha Tara , Bera Manoranjan , Pradeep Singh N. D. , Datta Prasanta K.
Published: January 2023

We studied the dispersion of nonlinear refraction coefficient (n2) of carbon dots by the Z-scan technique at different photon energies (2.38-2.48 eV). It shows positive n2 at 2.38 eV and negative n2 at other excitations.
Time Resolved Measurements of the Polarization State of Supercontinuum Generated in a Monatomic Gas
Authors: Railing L. , Le M. , Salehi F. , Gu J. , Kolesik M. , Milchberg H.M.
Published: January 2023

We demonstrate temporal and spectral measurements of the polarization state of supercontinuum generated from elliptically polarized pulses sent through a hollow core fiber differentially pumped with helium.
Observation of triangular-lattice pattern in nonlinear wave mixing with optical vortices
Authors: da Silva B. Pinheiro , dos Santos G. H. , de Oliveira A. G. , Silva N. Rubiano da , Buono W. T. , Gomes R. M. , Soares W. C. , Jesus-Silva A. J. , Fonseca E. J. S. , Souto Ribeiro P. H. , Khoury A. Z.
Published: January 2023

Preparation, control and measurement of optical vortices is increasingly important as they play an essential role in new applications to fundamental science and optical technologies. Spatial light modulation is the main approach behind the control strategies. Here, we demonstrate the modulation of light by light to observe the triangular-lattice pattern resulting from the spatial cross modulation between an optical vortex and a triangular shaped beam undergoing parametric interaction. Both up- and down-conversion processes are investigated.
Trap state dominated ultrafast charge carrier dynamics of two dimensional crystalline ultrathin trigonal Selenium
Authors: Prodhan Sayan , Karmakar Manobina , Kumbhakar Partha , Tiwary Chandra Sekhar , Datta Prasanta Kumar
Published: January 2023

Ultrafast carrier dynamics of ultra-thin two-dimensional selenium has been carried out by transient absorption spectroscopy and its trap-state dominated recombination model with free carrier dominated carrier dynamics has been found out.
Theory of Multi-Frequency Raman Generation Spectrum with Chirped Pulses
Authors: van der Veen Joscelyn
Published: January 2023

We derive the spectrum for multiple short chirped pulses interacting with a Raman medium and show how this predicts the asymmetric sidebands observed in experimental multi-frequency Raman generation.
Suppressing Stimulated Brillouin Scattering in Multimode Fibers via Wavefront shaping
Authors: Wisal Kabish , Chen Chun-Wei , Warrensmith Stephen , Cao Hui , Stone A. Douglas
Published: January 2023

We demonstrate theoretically that SBS threshold can be increased significantly by many-mode excitations in multimode fibers. We experimentally focus multimode excitation to a diffraction limited spot, leading to high SBS threshold with good beam quality.
Spectrometric Design Approach to Portable LIBS Isotopic Determination
Authors: Scheeline Alexander , Chan George
Published: January 2023

Laser-induced breakdown analysis of elemental isotopic composition requires ~ 5 pm wavelength resolution, high throughput, and ≤ 05 nm spectral range. Component and layout choices for a suitable portable spectrometric system are explored and compared.
Thermo-optic Silicon Nitride Phase Shifters for Visible Light
Authors: Sundaram Vijay Soorya Shunmuga , Manfreda-Schulz Evan , Palone Thomas , Deenadayalan Venkatesh , Howland Gregory A. , Preble Stefan F.
Published: January 2023

We present foundry-fabricated thermo-optic phase shifters using visible wavelength silicon nitride (SiN) waveguides. A 500µm long phase shifter demonstrated a π phase shift at a Pπ≈120m W.
Scattering assisted angular momentum detection using a plasmonic silver nanowire
Authors: Paul Diptabrata , Sharma Deepak K , Kumar G V Pavan
Published: January 2023

We report the first observation of how a single nano object such as a monocrystalline silver nanowire can be utilized for scattering assisted simultaneous detection of spin and orbital angular momentum of light beams.
Optimal Projection for Detection of Random Displacement Error
Authors: Hanamura Fumiya , Asavanant Warit , Fukui Kosuke , Furusawa Akira
Published: January 2023

We propose a general method to find the optimal projection for detecting random displacement errors for given input states. We apply the method to Fock, GKP, and cat states in Gaussian displacement cases.
Stabilizing the Optical Beam in Higher-order Nonlocal Nonlinear Media
Authors: Mishra M. , Kajala S. K. , Sharma M. , Singh B. , Jana S.
Published: January 2023

This article presents a stability analysis of optical beam propagation through a medium possessing higher-order nonlocal nonlinearity. The zones corresponding to stable beam propagation have been identified in terms of material properties and beam regulating factors.
Non-Zero Dispersion-Shifted Ring-Core Fiber with Graded-Index Profile Supporting 26 OAM Modes
Authors: Zhao Wenqian , Liu Yuanpeng , Wang Yingning , Geng Wenpu , Fang Yuxi , Pan Zhongqi , Yue Yang
Published: January 2023

A graded-index non-zero dispersion-shifted ring-core fiber is proposed and investigated for OAM modes. Due to the smoother material-index transition, up to 26 OAM modes can be supported in the designed fiber with <10 ps/nm/km dispersion.
Design of Integrated Visible-Light Polarization Rotators and Splitters
Authors: Sneh Tal , Hattori Ashton , Notaros Milica , Corsetti Sabrina , Notaros Jelena
Published: January 2023

Integrated polarization rotators and splitters are designed for the first time at visible wavelengths. Specifically, an adiabatic polarization rotator, an off-axis polarization rotator, and a mode-coupling polarization splitter are designed in a silicon-nitride platform.
Demonstration of Differential and Phase-Diverse Photonic Time-Stretch Systems
Authors: Ordouie Ehsan , Jiang Tianwei , Zhou Tingyi , Juneghani Farzaneh A. , Vazimali Milad G. , Jalali Bahram , Fathpour Sasan
Published: January 2023

The performance of traditional photonic time-stretch systems is limited in terms of bandwidth and dynamic range. A differential and phase-diverse electrooptic modulator circuit is demonstrated in the thin-film lithium niobate platform to overcome these limitations.
A Study of Coupling Efficiency in Pulley Microring Resonators
Authors: Zhang Wei , Menyuk Curtis R. , Hu Jonathan
Published: January 2023

We study coupling efficiency in pulley microring resonator structures. We find the optimal structure to achieve the balanced output over octave-spanning bandwidth for high stabilization using f–2f technique.
Selecting Mid-infrared Filters for a Machine Learning Chemical Classifier by Genetic Optimization
Authors: Tan Henry , Cadusch Jasper , Meng Jiajun , Crozier Kenneth B.
Published: January 2023

We use a genetic algorithm to optimize six mid-infrared filters for a machine learning classifier that identifies chemicals from their infrared transmission. The model is tested by classifying 15 chemical classes via simulations with noise.
Illucidating the structural components of starch granules using advanced analytical techniques
Authors: Chakraborty Ishita , Govindaraju Indira , Zhuo Guan-Yu , Baruah Vishwa Jyoti , Sarmah Bhaswati , Mahato KK , Noothalapati Hemanth , Mazumder Nirmal
Published: January 2023

Thermal and chemical characterization are performed in different rice varities originated in Northeast India to illucidate their composition and physicochemical characteristics using Raman spectroscopy, non linear optical microscopy, and differential scanning calorimetry (DSC).
Single-shot metasurface-based HDR imaging system with deep neural network
Authors: Bang Junseo , Kim Changhyun , Lee Byoungho
Published: January 2023

Single-shot high dynamic range (HDR) imaging with advanced image quality for more generalized high dynamic range scenes is achieved from end-to-end optimization of a metasurface-based off-axis imaging system and a deep neural network.
Polarization Study of Engineered Scattering Elements in Photonic Integrated Circuits
Authors: Howard Tyler V. , Brown Thomas G.
Published: January 2023

We modeled engineered scattering elements in a photonic integrated circuit for polarization characterization of waveguides. Results demonstrate a viable method to distinguish linearly polarized orthogonal modes in the waveguide with three different design variations.
Polarization-Insensitive Broadband Germanium on Insulator (Ge-OI) Grating Coupler
Authors: Mishra Arpita , Rana Krishna Kant , Srinivas Talabattula
Published: January 2023

We have designed a novel Polarization Independent, Broadband, trapezoidal bilayer grating structure on GeOI platform which couples nearly 70 % of Transverse Electric (TE) and 60 % of Transverse Magnetic (TM) modes respectively.
Deep-UV-Induced Autofluorescence Spectroscopy to investigate the differential response of proteins to nonenzymatic glycation in vitro
Authors: Mukunda Darshan Chikkanayakanahalli , Laksmi Kuppusamy Srinivasan Vaisshnava , Stanley Weena , Mazumder Nirmal , Mahato Krishna Kishore
Published: January 2023

Deep-UV light (280-295 nm) induced autofluorescence (AF) can be used to monitor the biochemical and structural changes in nonenzymatically glycated proteins. The current study describes the varying AF spectral signatures in Hemoglobin (Hb) and Human Serum Albumin (HSA) upon nonenzymatic glycation (NEG).
Digitally Enhanced Fiber Sagnac Interferometer for Near-Infrared Molecular Dispersion Spectroscopy
Authors: Wong Justin , Bandutunga Chathura , Gray Malcolm , Chow Jong
Published: January 2023

We present a fiber dispersion spectrometer with digitally enhanced homodyne phase extraction and frequency and intensity noise suppression. It is used to interrogate anomalous dispersion of Hydrogen Cyanide (H13CN) in the near-infrared.
Adaptive volumetric descattering in digital holography
Authors: Wang Hao , Tahir Waleed , Tian Lei
Published: January 2023

We demonstrate an adaptive learning framework, termed dynamic synthesis network (DSN), which dynamically synthesizes model weights and adapts to different scattering conditions. The efficiency of DSN is demonstrated in holographic 3D particle descattering.
Optimization of Holograms with Random Phase Distribution Using the Alternating Direction Method of Multipliers Algorithm
Authors: Kim Minkwan , Nam Seung-Woo , Yoo Dongheon , Jo Youngjin , Lee Byoungho
Published: January 2023

Optimization of the phase-only computer-generated hologram, based on the alternating direction method of multipliers algorithm is proposed. In this work, the phase randomness of the reconstructed object is preserved, which gives an adequate blur effect.
Calculation of Computer-Generated Hologram based on Frequency Domain
Authors: Lee Siwoo , Lee Juhyun , Nam Seung-Woo , Lee Byoungho
Published: January 2023

This study proposes a method to synthesize computer-generated holograms by applying discrete cosine transform to conventional U-Net architecture resulting in competitive reproduced image quality with a reduced generation time.
Multi-view computer-generated hologram for display projection using Fourier and spatial domain segmentation
Authors: Cruz Maria-Luisa
Published: January 2023

We propose a method that includes spatial and Fourier segmentation to generate a multi-view computer-generated hologram with noise reduction.
Single and double slit time diffraction at optical frequencies
Authors: Tirole Romain , Vezzoli Stefano , Galiffi Emanuele , Tilmann Benjamin , Huidobro Paloma A. , Alù Andrea , Maier Stefan A , Pendry John B , Sapienza Riccardo
Published: January 2023

In a temporal version of a single slit and Young’s double slit experiments, newly generated optical frequencies form a diffraction pattern. The spectral extent of these frequencies is beyond the expected bandwidth of the modulation.
Epsilon near zero metamaterial-based Optical Filter
Authors: Dewan Ankush , Kalra Yogita , Sinha R.K.
Published: January 2023

Design for Epsilon near zero metamaterial 1D photonic multilayer structure made of Ag/Si/TiO2 alternate layers is theoretically investigated for use as a band-pass filter in the visible range for the s-polarized light. The designed structure is analyzed with the FEM-based software COMSOL Multiphysics and numerical computations in MATLAB.
Continuous wavelet transformations for OCT image reconstruction: Applications
Authors: Pothapakula Naveen Kumar , Bhattacharya Shanti
Published: January 2023

Continuous wavelet transformations are used in the current simulation model for the spectral domain OCT image reconstruction. This filter bank approach enhances longitudinal spatial resolution by a factor of two over the Fourier-based reconstruction technique.
Q enhancement of a double-disk cavity based on mode cancellation
Authors: Hong Seung Hyeon , Lee Young Jin , Hong Seokhyeon , Kim Youngsoo , Kwon Soon-Hong
Published: January 2023

We propose a way to increase the quality factor of whispering-gallery-mode resonators by using a dielectric double-disk cavity with a vertical air gap. Our cavity reaches a 5.67-folds quality factor enhancement compared to a single disk by radiation field suppression through destructive interference with opposite electric fields in each disk.
Far-field Propagation of Non-isotropically Correlated Partially Coherent V-point Singularities
Authors: Manisha  , Joshi Stuti , Khan Saba N , Kanseri Bhaskar , Senthilkumaran P
Published: January 2023

The statistical properties of non-isotropic partially coherent V-point singularities (n-PCVS) on far -field propagation are discussed here. The properties such as intensity, state of polarization (SOP) and degree of polarization (DOP) are found to be highly dependent on the non-isotropic states of spatial correlation and the polarization singularity index (PSI).
Schlieren System for Detection of Photoacoustic Signals
Authors: Ojeda Yanier , Martínez Geminiano D.
Published: January 2023

An optical method to detect photoacoustic signals generated by irradiating graphite samples with a pulsed laser is presented. The system is based on a Schlieren set up and a camera to register the acoustic field.
Slow Light Effect in a High Quality Factor Toroidal Mode in a Terahertz Metasurface
Authors: Bhattacharya Angana , Kumar Gagan
Published: January 2023

The study reports slow light effect and steep anomalous dispersion of terahertz radiation in the vicinity of a sharp toroidal excitation. Quality factor of 89.6 is reported for the toroidal mode.
Characterization and Modeling of Nonlinear Laser Propagation in Water and Dielectrics
Authors: Peterson J. Ryan , Hafizi Bahman , Chen Yu-hsin , Jones Theodore G. , Johnson Luke A. , Ting Antonio , Gordon Daniel F.
Published: January 2023

Nonlinear propagation of intense laser pulses in condensed media, including liquid water, is under study in experiments and numerical modeling. Recent simulations reveal previously unknown laser-generated plasma effects on stimulated Raman scattering and four-wave mixing.
Enhancing collinear acousto-optic filter performance using opto-electronic feedback
Authors: Slinkov Grigorii D. , Mantsevich Sergey N.
Published: January 2023

In this work we demonstrate how an introduction of an opto-electronic feedback loop can enhance the performance of a collinear acousto-optic tunable filter (AOTF), narrowing its passband and suppressing the sidelobes.
High-Efficiency Soliton Mode Compression of 515 nm Laser Pulses at kHz-MHz Repetition Rate for Bright High Harmonic Generation
Authors: Wang Siyang , Yan Jieyu , Brunner Will , Popmintchev Dimitar , Popmintchev Tenio
Published: January 2023

We demonstrate a single-stage multi-plate compression of 515 nm second-harmonic pulses of Yb:KGW laser amplifier from 180 fs to 40 fs, ideal for bright high harmonics in the EUV regime using kHz-to-MHz visible driving lasers.
Far-field Phonon Polariton Excitation in Nanostructured Twisted α-MoO3 Bilayers
Authors: Kumar Vikas , Sahoo Nihar Ranjan , Kumar Anshuman
Published: January 2023

Recently, hyperbolic phonon-polaritons in twisted-bilayer systems have received significant attention due to their interesting topological features. Here, we show a far-field approach to excitation and detection of these polaritons using nanostructured twisted α-MoO3 bilayers.
Direct phase function acquisition using speckle correlations
Authors: Alterman Marina , Saiko Evgeniia , Levin Anat
Published: January 2023

We capture volumetric scattering materials under two nearby coherent illumination directions. We show that correlations between speckle patterns can be converted into closed-form to reveal intrinsic material phase function, determining scattering at different angles.
Performance Implications of Cascaded ROADMs on DP 64-QAM Systems with Transceiver Noise
Authors: Jain Ankita , Cartledge John C.
Published: January 2023

The effect of bandwidth narrowing due to cascaded ROADMs is investigated for DP 64-QAM systems impacted by transceiver noise. Data-aided DSP is used to cope with the reduction in total SNR and to mitigate the filtering-induced signal distortion. For a given channel SNR, the adverse effects of bandwidth narrowing are more pronounced.
Deep learning-assisted mode control in synthetic dimension
Authors: Xia Shiqi , Lei Sihong , Tang Liqin , Song Daohong , Chen Zhigang
Published: January 2023

We design synthetic modal dimension (SMD) by deep learning and demonstrate direct mode control in such SMD through engineered photonic lattices, including mode confinement and conversion which are otherwise difficult to achieve in real-space dimensions.
Characterization of the single fungus in a controlled environment by using optical trapping-Raman spectroscopy
Authors: Ai Yukai , Wang Chuji , Pan Yong-Le , Videen Gorden
Published: January 2023

We measured the Raman spectra of trapped single fungal aerosol particles under controlled environments using optical trapping-Raman spectroscopy. Results reveal the loss, formation, and chemical reaction of a single particle in simulated atmospheric conditions.
Fluorescent wavefront shaping using incoherent iterative phase conjugation
Authors: Aizik Dror , Gkioulekas Ioannis , Levin Anat
Published: January 2023

We extend iterative phase conjugation algorithms, previously derived for coherent illumination. We show they can be used to focus on incoherent fluorescent sources, and the incoherent emission largely expands penetration depth and convergence speed.
Achieving multi-dimensional convolutions in photonic frequency synthetic dimensions
Authors: Fan Lingling , Zhao Zhexin , Wang Kai , Dutt Avik , Wang Jiahui , Buddhiraju Siddharth , Wojcik Casey C , Fan Shanhui
Published: January 2023

We introduce a scheme to achieve arbitrary convolution kernels in multiple dimensions via the frequency synthetic dimension. This scheme incorporates a simple setup consisting of a ring resonator incorporating a phase and an amplitude modulator.
Sensitivity Enhancement of Surface Plasmon Resonance based Sensors using Electromagnetic Theory
Authors: Kushwah Himanshu , Anand Jagneet Kaur
Published: January 2023

Sensitivity enhancement of surface plasmon resonance (SPR) based sensors due to improvement in input optical coupling is theoretically investigated from the first principle. Various design parameters are optimized in a typical prism coupling Kretschmann configuration.
Microscale concave interfaces for reflective displays generate concentric rainbows
Authors: Rada Jacob , Hu Haifeng , Zhou Lyu , Zeng Jing , Song Haomin , Zeng Xie , Shimul Shakil , Fan Wen , Zhan Qiwen , Li Wei , Wu Limin , Gan Qiaoqiang
Published: January 2023

Structural color utilizing microscale concave interfaces has been reported in several publications, but the explanation is currently incomplete. Within this work, the physics behind this coloration technique is clarified using multiple light sources and simulations.
Three-dimensional imaging of air temperature distribution around a soldering iron by parallel phase-shifting digital holography
Authors: Kumon Yuki , Inoue Tomoyoshi , Nishio Kenzo , Kumar Manoj , Matoba Osamu , Xia Peng , Awatsuji Yasuhiro
Published: January 2023

We propose the method for imaging of temperature distribution by using parallel phase-shifting digital holography. The proposed method was experimentally demonstrated by recording the temperature distribution around a soldering iron.
Enhanced Pulse Delay in a Fabry-Perot Resonator with Spatially Distributed Mirrors
Authors: Petrov Nikolai I.
Published: January 2023

Propagation of a light pulse through Fabry-Perot spectral filter combining Bragg grating mirrors is considered. A significant increase in the pulse delay is shown for the mirrors with opposite phases of the dielectric constant modulation.
Feasibility Study of Laser-Induced Sonar
Authors: Yellaiah J.
Published: January 2023

This study demonstrates the feasibility of laser-induced SONAR (sound navigation and ranging) for non-contact detection and location of various underwater targets such as sand-filled and water-filled plastic and glass cuvettes, and the water-air interface.
Propagation of Higher Order Modes in FBGs
Authors: Kumar Ajay , Sharma Anurag
Published: January 2023

We report here a method for propagation of higher order modes (HOM) using the collocation method and split step non-paraxial in few-mode fiber Bragg gratings (FM-FBGs), which are used as multi-parameters sensors.
Specialty optical waveguides to host higher order conjugate exceptional points
Authors: Dey Sibnath , Ghosh Somnath
Published: January 2023

We report the hosting higher order conjugate exceptional points (EPs) in gain-loss assisted multi-mode supported optical waveguides and explore the selective mode conversion phenomenon assisted by parametrically encircled multiple exceptional points.
Fiber-powered Antenna Using RF Over Fiber for 2-Way Communications
Authors: Singh Gurubinder , Dhawan Rajveer , Dixit Abhishek , Choudhary Amol
Published: January 2023

We propose a fiber-powered antenna system where an antenna at the remote site is powered wholly by optical energy transferred over an optical fiber and demonstrate 5G transmission in a 2-way wireless communication link.
Multiscale computational visualization of plasmonic structural coloration
Authors: Loi Wei Sen , Chau Kenneth J.
Published: January 2023

We explore photorealistic computational visualization using electrodynamic simulations and physically based rendering (PBR) to render the iridescent colors of large objects coated with periodic metallic nanostructures supporting plasmonic effects.
Polarization-insensitive refractive index sensor based on high-Q resonance in all-dielectric metasurface
Authors: Bhowmik Bhairov Kumar , Bhowmik Tanmay , Pandey Pranav Kumar , Sikdar Debabrata , Kumar Gagan
Published: January 2023

We report a polarization-insensitive all-dielectric metasurface that exhibits high-Q (~500) resonance at optical-communication wavelength. The refractive index sensing of the analyte indicates a sensitivity of 50 RIU/nm and figure-of-merit 16.12 RIU-1, irrespective of polarizationrotation.