bluuebunny/crossref_metadata_2025 huggingface dataset:
Incoherent Digital Holographic Imaging System utilizing Self-Interference Effects of Cycloidal Diffractive Waveplate Lens made by Quarter-Wave Condition
Authors: Lee Jae-Won , Nauman Asad , Shin Jung-Yeop , Wang Jun-Kai , Choi Kihong , Park Joongki , Kim Youngrok , Min Sung-Wook , Kim Hak-Rin
Published: November 2022

Incoherent digital holographic imaging method was presented with utilizing polarization-dependent self-interference effects obtained by cycloidal diffractive lens made by a quarter-wave retardation condition for providing enhanced imaging properties as well as compact module conditions.
In-line Geometric Phase Lens Inscribed in Azopolymer Material Using Polarization Holography
Authors: Nedelchev Lian , Nikolova Ludmila , Mateev Georgi , Ivanov Branimir , Strijkova Velichka , Nazarova Dimana , Stoykova Elena , Choi Kihong , Park Joongki
Published: November 2022

A polarization-sensitive diffractive optical element was recorded in an azopolymer thin film using polarization holography. It acts as a converging lens for left circularly polarized light and as diverging lens for right circularly polarized light.
Production of structured light beams through in-line wavefront shaping using spatial light modulator
Authors: Shikder Allarakha , Nishchal Naveen K. , Kumar Praveen
Published: November 2022

Structured light beams have many applications in different areas of optics. This paper demonstrates a method to generate structured beams using a spatial light modulator through in-line configuration for phase modulation.
Quantitative Phase Microscopy from Defocused Images with a Common Brightfield Microscope
Authors: Rogalski Mikołaj , Trusiak Maciej
Published: November 2022

We present a novel method for achieving a quantitative phase imaging in a common brightfield microscope with LED illumination. Proposed method bases on collecting several defocused images and numerically backpropagating them to the in-focus plane.
Sequential Adaptive Scattering-Compensated Holography for Fluorescence Microscopy
Authors: Schretter Colas , Schelkens Peter
Published: November 2022

We accelerate the Dynamic Adaptive Scattering Compensation Holography (DASH) method and improve numerical robustness. The algorithm is non-iterative and applies sequential updates of the modulating phase instead of gathering responses for equis-paced modes in K-space.
Phase Retrieval using Transport of Intensity and Phase with Electrically Programmable Optical Path Lengths
Authors: Alanazi Nouf A. , Banerjee Partha P.
Published: November 2022

The principle of unwrapped phase retrieval using transport of intensity and phase equations with electrically programmable optical path lengths achieved employing liquid crystals is demonstrated by retrieving a Gaussian phase recorded with off-axis digital holography.
Learning-based noise reduction method for incoherent digital holography
Authors: Moon Junbeom , Choi Kihong , Hong Keehoon , Park Joongki , Jung Soon Ki
Published: November 2022

The reconstructed image acquired from the incoherent holographic system contains a high degree of the grainy noise component. We propose a learning-based noise reduction scheme to mitigate such noise in the complex-valued domain.
Optical 360° cylindrical holography with planer SLM
Authors: Wang Jun , Han Han , Wu Yang
Published: November 2022

This paper presents an optical 360° cylindrical holography by using isophase surface transformation within visible light with a 45° conical mirror and a commercial planar SLM. Its feasibility is demonstrated by optical experiments.
On-Chip Circular Optical Phased Arrays
Authors: Liu Qiankun , Benedikovic Daniel , Atieh Ahmad , Smy Tom , Cheben Pavel , Ye Winnie N
Published: November 2022

We report on a two-dimensional optical phased arrays with circular configurations to effectively suppress the grating sidelobes down to 10 dB, while enlarging the steering range to 0.24π and narrowing the angular beamwidths to 0.5°.
Fano resonant, bi-directional optical coatings based on tailoring continuum states with a porosity control
Authors: Ko Joo Hwan , Yoo Young Jin , Song Young Min
Published: November 2022

We present the tunable Fano resonator based on tailoring continuum states with a porosity control. The optical coating provides unique bi-directional responses in the visible-range, capable of dynamically reshaping the resonant spectra depending on polarization.
Visible-Light Integrated Optical Phased Arrays for Chip-Based 3D Printing
Authors: Corsetti Sabrina , Notaros Milica , Sneh Tal , Stafford Alex , Page Zachariah A. , Notaros Jelena
Published: November 2022

This work introduces an integrated photonic system that enables curing of a visible-light-curable resin for chip-based 3D printing. Curing of multiple mm-scale regions is achieved via an integrated optical phased array operating at 632.8 nm.
Machine Learning aided characterization of multi-stage integrated ring resonator filters
Authors: Khan Ihtesham , Tunesi Lorenzo , Masood Muhammad Umar , Ghillino Enrico , Bardella Paolo , Carena Andrea , Curri Vittorio
Published: November 2022

Modern optical transmission standards require steep band-pass filters enabling spectrally efficient channels spacing. For this aim, we propose a machine-learning agent to assist in the characterization of complex ring resonator filters to fulfill the transmission requirements.
On-Chip Mode Conversion with MEMS-Tunable Phase-Matching
Authors: Pruessner M.W. , Roxworthy B.J. , Kozak D.A. , Tyndall N.F. , Rabinovich W.S. , Stievater T.H.
Published: November 2022

We demonstrate on-chip mode conversion using micro-electro-mechanical systems to tune the phase-matching condition in an asymmetrical directional coupler. Simulations confirm broadband mode conversion consistent with tunable phase-matching. Measurements demonstrate tunable TE0-TE2 to TE0-TE1 conversion.
Efficient Polarization-Insensitive O-Band Grating Couplers for Silicon Nitride
Authors: Kohli Manuel , Chelladurai Daniel , Buriakova Tatiana , Moor David , Eppenberger Marco , Zervas Michael , Fedoryshyn Yuriy , Koch Ueli , Leuthold Juerg
Published: November 2022

We introduce efficient polarization-insensitive SiN O-band grating coupler relying on a simple fabrication procedure. It's an essential but missing building block in photonics and needed, for example, to realize detectors for light with unknown polarization.
Probe-Card Based Automatic Testing of Photonic Integrated Filters
Authors: Petrini Matteo , Baldi Rita , Seyfried Moritz , Morichetti Francesco , Melloni Andrea
Published: November 2022

Automatic electrical IV measurements and optical spectral tuning of a 4-channels reconfigurable multiplexer is achieved using a probe-card approach. The full testing lasts less than 300 msec. The technique is suitable for PICs volume testing.
Long-term Frequency Stabilization of a Hybrid-integrated InP-Si3N4 Diode Laser
Authors: van Rees Albert , Winkler Lisa V. , van der Slot Peter J. M. , Nölleke Christian , Boller Klaus J.
Published: November 2022

Hybrid integration of diode amplifiers with Si3N4 feedback circuits offers wide tuning and high frequency stability on short timescales. We improve long-term stability, for the first time, by locking the laser frequency to an acetylene absorption line.
In Situ Control of the Kerr Nonlinearity in a Pockels Photonic Cavity
Authors: Cui Chaohan , Zhang Liang , Fan Linran
Published: November 2022

We report the in situ control of integrated Kerr nonlinearity through its interplay with the cascaded Pockels nonlinear process. Effective Kerr nonlinearity is tuned over 10 dB dynamic range at single photon level without modifying photonic structures.
A Dual-Stage Photonic Integrated Circuit Spectrometer
Authors: Dorsey Kyle J. , Evans Christopher C. , Subotic Sasha , Cwik Michal , Young Brandon D. , Adibi Ali , Hensley Joel M.
Published: November 2022

We present a photonic integrated circuit spectrometer that cascades an arrayed- waveguide grating with a series of coupled-resonator optical waveguide filters to achieve a spectral resolution of 0.5 nm over a bandwidth from 805–930 nm.
Experimental Demonstration of Structured Illumination Microscopy Using a Photonic Integrated Circuit
Authors: Arisev Ongun , Deng Qingzhong , Kouznetsov Dmitry , Mahmud-Ul-Hasan Md. , Van Dorpe Pol , Verellen Niels
Published: November 2022

We present a photonic circuit, integrated with switches and phase modulators, that generates structured illumination patterns. In combination with our custom reconstruction algorithm, 100nm resolution in a structured illumination microscopy (SIM) imaging sequence is achieved.
Temporal Dynamics of Strongly Coupled Epsilon-Near-Zero Modes
Authors: Ebrahim M. H. , Marini A. , Bruno V. , Kinsey N. , Khurgin J. B. , Faccio D. , Clerici M.
Published: November 2022

We numerically investigate the temporal dynamics of radiation within an epsilon-near-zero (ENZ) film in conditions where the ENZ mode is strongly coupled to the plasmonic resonances of gold nanoantennae patterned on the ENZ film.
Temperature Insensitive Avalanche Photodetectors
Authors: De Souvaraj , Das Ranjan , Singh Karanveer , Mandalawi Younus , Kleine-Ostmann Thomas , Schneider Thomas
Published: November 2022

We design and simulate a Si-Ge avalanche photodetector secured by a deep trench for effective shielding from thermal crosstalk. Further, the effective photocurrent, dark current, and bandwidth parameters for such detectors are thoroughly analyzed.
GaN-on-Sapphire Photonic Circuit with Polarization Independent Grating Coupler at 1550 nm
Authors: Suraj  , Rathkanthiwar Shashwat , Nath Digbijoy , Raghavan Srinivasan , Selvaraja Shankar Kumar
Published: November 2022

We demonstrate polarization-independent grating couplers, single-mode waveguide and ring resonator for the first time in the GaN-on-Sapphire waveguide platform. We present material characterization, device simulation and experimental results.
Highly Integrated Photonic Tensor Core for imagining processing
Authors: Ma Xiaoxuan , Peserico Nicola , Khaled Ahmed , Guo Zhimu , Meng Jiawei , Shastri Bhavin J. , Sorger Volker J.
Published: November 2022

Here we present a highly integrated architecture to perform Matrix-Vector Multiplication. By using the GEMM compiler, we can process images for 3-bits edge detection and 5-bits blur filter, with an error rate lower than 5.1%.
Reliable Quantum Dot Laser Grown by MOCVD
Authors: Wang Lei , Hughes Eamonn , Zhang Chongxin , Bowers John , Klamkin Jonathan
Published: November 2022

Aging testing of MOCVD-grown QD lasers has been conducted for approximately 1,000 hours. The threshold current tends to decrease for aging at 30 °C. For aging at 60 °C, the extrapolated lifetime is five million hours.
Infrared and visible micro-emitters made by lift-off processing in pulsed laser deposited layers
Authors: Gassenq Alban , Cleyet-Merle Etienne , Guyot Yannick , Nguyen Hai-Son , Cueff Sébastien , Pereira Antonio
Published: November 2022

Micro-structuration of rare earth doped materials by liftoff processing in pulsed laser deposited layers are promising in photonics since they do not require etching. In this work, we present our recent progress in the fabrication and characterization of such structures for visible and infrared emission. Different kinds of devices have been investigated (micro-disks, micro-strips, grating and so one), with different host materials (Y2O3 and Al2O3) and dopant (Eu3+ and Er3+ ions). We show here that the shape and the material of the microstructures can be chosen to control the light for different wavelength ranges. This work opens the way of the easy realization of efficient micro-emitter for photonics applications.
Multispectral color filters based on self-aligned dual plasmonic gratings fabricated by nano-imprint lithography
Authors: Lodewijks Kristof , Mareddi Bharathkumar , Qin Rongchen , De Proft Anabel , Figeys Bruno , Stella Ugo , Willegems Myriam , Jansen Roelof , Rottenberg Xavier , Storace Eleonora , Kutrzeba-Kotowska Bogumila
Published: November 2022

Multispectral plasmonic color filters were fabricated using nano-imprint lithography and benchmarked to similar filters fabricated with standard CMOS processing. The self-aligned process yields devices with narrow linewidths below 30nm and up to 50% transmission efficiency.
Inverse Design of Integrated Photonic Coherent Optical Lattice Generators
Authors: Kouznetsov Dmitry , Arisev Ongun , Van Dorpe Pol , Verellen Niels
Published: November 2022

We explore the use of inverse design methods for the generation of optical lattices in photonic integrated circuits. A polychromatic pattern generating device that switches between optical lattices with different symmetry and periodicity, is presented.
Multisection Photonic Integrated Active Demultiplexer - Calibration to Operation
Authors: Butler Olivia , Srivastava Manas , Sivapalan Krishna , Sharma Ankit , Gutiérrez-Pascual Desi , Smyth Frank , Anandarajah Prince M. , Kaszubowska-Anandarajah Aleksandra
Published: November 2022

We demonstrate a new approach to the calibration and control of a multi-section active demultiplexer realized as a photonic integrated circuit. Thresholding, clustering and curve fitting are used for the choice of optimum operational parameters.
Subcarrier-Based Coherent PON Architecture for a Converged Fiber Infrastructure in Smart Cities
Authors: Adib Md Mosaddek Hossain , Füllner Christoph , Koos Christian , Freude Wolfgang , Randel Sebastian
Published: November 2022

We propose a coherent PON architecture featuring low-cost DFB lasers at the ONUs and supporting a variety of network services by flexibly assigning subcarriers. We demonstrate error- free reception up to 108Gbit/s with 30dB loss budget.
Open and Disaggregated Transponder for Distributed Computing Network
Authors: Nishizawa Hideki , Zhang Xiaocheng , Anazawa Kazuya , Kitamura Kei , Mano Toru , Sone Yoshiaki , Obana Kazuaki , Takasugi Koichi , Mayoral Arturo , Mari Diego
Published: November 2022

In this paper, we apply an open and disaggregated methodology to inter-datacenter networks and propose a transponder architecture that is scalable, agile, efficient, and low-latency. The effectiveness of the proposed architecture is discussed.
A Multi-technology/Multi-domain QKD Deployment over a Telco Production Network: Practical Issues and Outcomes
Authors: Fernández-Palacios Juan Pedro , Jiménez Felipe , Rivas-Moscoso José Manuel , Pastor Antonio , Folgueira Jesús , López Diego , Brito Juan Pedro , Martín Vicente
Published: November 2022

We present a setup for testing CV- and DV-QKD technology coexistence over a production network. We demonstrate multi-technology, multiband operation of QKD systems working both separately and in trusted-node configuration for intra- and inter-domain applications.
Experimental implementation of a versatile, below-shot-noise telecom receiver
Authors: Jabir M.V. , Annafianto N. Fajar R. , Burenkov I. A. , Battou A. , Polyakov S. V.
Published: November 2022

We demonstrate the time-resolving receiver at telecom wavelength for several encodings and alphabet lengths. We study energy-bandwidth optimisation beyond shot noise limit by enabling novel modulation scheme.
Capacity and Energy Usage of Translucent and Multi-Band Transparent Optical Networks
Authors: Sadeghi Rasoul , Correia Bruno , Napoli Antonio , Costa Nelson , Pedro João , Curri Vittorio
Published: November 2022

This work shows that exploiting more bands in a transparent network design is a more effective and power-efficient way to increase the network capacity instead of relying on signal regenerators to increase spectral efficiency.
Silicon Photonics Neural Networks for Training and Inference
Authors: Shastri Bhavin J. , Filipovich Matthew J. , Guo Zhimu , Prucnal Paul R. , Shekhar Sudip , Sorger Volker J.
Published: November 2022

Deep learning hardware accelerators based on analog photonic networks are trained on standard digital electronics. We discuss on-chip training of neural networks enabled by a silicon photonic architecture for parallel, efficient, and fast data operations.
A half-cylinder photonic plate for broadband light polarization and light recycling by integrated engineered perovskite photovoltaic cells
Authors: Martínez-Denegri Guillermo , Ferreira Catarina G. , Ruiz-Preciado Marco A. , Fassl Paul , Kramarenko Mariia , Paetzold Ulrich W. , Martorell Jordi
Published: November 2022

We present an innovative optoelectronic design combining wide bandgap perovskite photovoltaic cells and broadband light polarizing structures to recycle the stray light back into electricity in devices requiring polarized light selectivity, such as in LCDs.
Structuring Hydrogels Inside Microfluidic Channels by Two-Photon Lithography
Authors: Dzikonski Dustin , Bekker Elena , Zamboni Riccardo , Denz Cornelia
Published: November 2022

We propose and demonstrate a platform for various single cell experiments fabricated by two-photon polymerization inside microfluidic devices. As flexible building blocks, we employ hydrogel-based structures which are added to the initial channel design in-situ.
Heavily doped zinc oxide with plasma frequencies in the telecommunication wavelength range
Authors: Koch Alexander , Mei Hongyan , Rensberg Jura , Hafermann Martin , Salman Jad , Wan Chenghao , Wambold Raymond , Blaschke Daniel , Schmidt Heidemarie , Salfeld Jürgen , Geburt Sebastian , Kats Mikhail A. , Ronning Carsten
Published: November 2022

We demonstrate heavy doping of ZnO by a combination of gallium (Ga) ion implantation using a focused ion beam (FIB) system and post-implantation laser annealing, where we achieved heavily doped ZnO:Ga with free-carrier concentrations of ~9.5 × 1020 cm-3, which results in a plasma wavelength of 1.16 µm.
Compact sensor based on inversely designed ultrahigh RI metamaterial
Authors: Elizarov Maxim S. , Fratalocchi Andrea
Published: November 2022

We propose optical RI sensor with sensitivity of 350 nm/RIU for the micrometer footprint. It is based on artificial material which can emulate non-dispersive ultra-high refractive index (n ≈ 100) by geometrical deformation of reflective substrate.
Fabricating a Tapered Intrinsic Fabry-Perot Interferometer Using a CO2 Laser
Authors: Yi Xinruo , Li Yuqi , Zhao Kehao , Wu Zekun , Wang Qirui , Liu Bo , Buric Michael , Chen Kevin P.
Published: November 2022

We report a CO2 laser fabrication method to produce a tapered intrinsic Fabry-Perot interferometer (IFPI) device with 5~6-um diameter of the taper waist with transmission losses of <0.3dB at 1550nm for sensing application.
A THz metasurface sensor based on carbon nanotubes film
Authors: Zhang Xiang , Wang Yue , Wu Meilin , Ma Cheng
Published: November 2022

A terahertz metasurface based on carbon nanotube film was investigated. The results demonstrated that the sensor is sensitive to the changes of the surrounding medium environment, showing great application potential for the detection of biochemical.
Phase-Change Material Anisotropic Scatterers for Switchable Nano-Scale Half-Wave Plates at Visible and NIR Wavelengths
Authors: De Proft Anabel , Lodewijks Kristof , Cummins Cian , Saseendran Sandeep Seema , Van Dorpe Pol , Rottenberg Xavier
Published: November 2022

We report on phase-change material scatterers in a half-wave plate design. A simulation study shows the cross-polarization of circularly polarized light reaches close to 20% around 800 nm in the ON state. Characterization is ongoing.
Multifunctional Materials Made of Glass-Forming Ionic Liquid Crystals and Nanoparticles for Photonics
Authors: Rudenko Valentyn , Tolochko Anatolii , Bugaychuk Svitlana , Zhulai Dmytro , Klimusheva Gertruda , Yaremchuk Galina , Mirnaya Tatyana , Garbovskiy Yuriy
Published: November 2022

In this paper, optical and nonlinear-optical properties of a wide range of unconventional glass materials made of metal alkanoate-based ionic liquid crystals and nanoparticles of different types are discussed. Relevant photonics applications are also proposed.
Disentangling Gain, Distributed Losses and End-Facet Losses in Freestanding Nanowire Lasers using Automated High-Throughput Micro-Spectroscopy
Authors: Church Stephen , Zhang Yunyan , Al-Abri Ruqaiya , Al-Amari Nawal , Liu Huiyun , Parkinson Patrick
Published: November 2022

Optimizing nanowire laser performance is challenging due to wire-to-wire variation of the gain and cavity properties. Our data-led experimental approach harnesses this variation, demonstrating that the gain is the factor limiting the lasing thresholds.
Sputtered AlN for Distributed Bragg Reflectors Operating in the SWIR Wavelengths
Authors: Kaynar Emine , Hopoğlu Hicret , Altuntaş İsmail , Demir İlkay , Sayraç Muhammed , Tüzemen Ebru Ş. , Alaydin B. Özgür
Published: November 2022

In this study, we aim to eliminate low thermal conductivity and refractive index differences in InP and GaSb based materials, which result in low output power and limited operation wavelength range for VECSELs.
Optimization of plasmonic tapering nanostructures for strong and versatile angle-selective flat optics
Authors: Kim Sun-Je , Chang Hanbyul , Jeong Yoonchan
Published: November 2022

We introduce our achievements on angle-selective flat optics using the nanoplasmonic tapering metasurfaces. Our study includes theoretical investigation on bimodal plasmonic waveguide and efficient multi-objective performance optimization using the stochastic optimizations with the Adam algorithm.
An all-dielectric metasurface polarimeter
Authors: Shah Yash D. , Dada Adetunmise C. , Grant James P. , Cumming David R. S. , Altuzarra Charles , Nowack Thomas S. , Lyons Ashley , Clerici Matteo , Faccio Daniele
Published: November 2022

We demonstrate an all-dielectric meta-polarimeter with a single unit-cell design capable of direct measurement of any arbitrary polarization states, achieving a polarization-measurement fidelity of 99 ± 1%. This holds promise for ultra-compact polarization imaging and quantum state tomography.
Tailoring Nonlinearities in Epsilon-Near-Zero Materials via Structure and Excitation
Authors: Ball A. , Wu J. , Fomra D. , Secondo R. , Saha S. , Sojib M. , Khurgin J. B. , Lezec H. J. , Kinsey N.
Published: November 2022

Epsilon-near-zero (ENZ) materials have demonstrated enhanced nonlinear optical interactions and efforts to push performance are underway. Beginning with the origin of nonlinearities in ENZ, we highlight avenues for improvement using nanostructures and tailored illumination.
A Wide Band-gap Metal-free Perovskite for Nonlinear Optics
Authors: Tsui Hei Chit Leo , Sirbu Dumitru , Alsaif Naseem , Iglesias-Porras Susana , Zhang Yifeng , Wang Ming , Liu Mingzhen , Peacock Anna C , Docampo Pablo , Healy Noel
Published: November 2022

This paper introduces metal-free perovskite structures for third-order nonlin-ear optical processes. Bench-marked against the lead-based prototypical methylammonium lead iodide materials system, their nonlinear figure of merit can be greater by over an order of magnitude.
Spatial mapping of light-induced displacement in on-chip coupled piezo/photodiodes
Authors: Eftekhari Zeinab , Rezaei Nasim , Zheng Jian-Yao , Cerreta Andrea , Hermes Ilka , Nguyen Minh , Rijnder Guus , Saive Rebecca
Published: November 2022

We study hybrid materials systems comprised of a silicon photodiode integrated with a piezoelectric material which show mechanical vibration upon alternating illumination. Here, we present time-dependent and spatially resolved measurements of the light-induced oscillation.
Optical Nonlinearity in 2D Semiconductors
Authors: Ganikhanov Feruz
Published: November 2022

Second order nonlinearity dispersion data for 2D-materials (WSe2, WS2) are presented within a broad wavelength range. Spectral features indicate the impact of the near bandgap excitons with the single sheet nonlinearity values χ(2) ~2.1-16.2×10-19 m2/V.
Spin-Hall effect induced by transverse optical spin
Authors: Peng Liang , Ren Hang , Liu Yachao , Lan Tianwei , Xu Kuiwen , Ye Dexin , Sun Hongbo , Xu Su , Chen Hongsheng , Zhang Shuang
Published: November 2022

We demonstrate spin-Hall effect for transversely spinning light at the interface of a metamaterial. The beam shift takes place in the plane of incidence, in contrast to the conventional spin-Hall effect of light.
Ultra-Thin Tunable Absorbers Based on Lossy Phase-Change Materials
Authors: Heßler Andreas , Taubner Thomas
Published: November 2022

We demonstrate ultra-thin, switchable infrared absorbers based on thin layers of PCMs with high optical contrast between a lossless amorphous and an exceptionally lossy crystalline phase on top of polar substrates.
Tunable photonic metasurfaces: fundamentals and applications
Authors: Shcherbakov M. R.
Published: November 2022

We summarize our recent results on design and implementation of tunable metasurfaces for all-optical switches, polarizing optics and dynamic imaging.
All electrical-driven Low insertion loss PCM based Multi-level Nonvolatile Photonic Memories
Authors: Meng Jiawei , Miscuglio Mario , Peserico Nicola , Gui Yaliang , Ma Xiaoxuan , Sorger Volker J.
Published: November 2022

Here we demonstrate low-loss multi-state photonic memory using broadband transparent phase change materials Ge2Sb2Se3 and Sb2Se3, which can be efficiently reprogrammed on-chip.
Highly Efficient White LEDs by Using Near Unity Emitting Colloidal Quantum Dots in Liquid Medium
Authors: Onal Asim , Eren Guncem Ozgun , Sadeghi Sadra , Melikov Rustamzhon , Han Mertcan , Karatum Onuralp , Ozer Melek Sermin , Jalali Houman Bahmani , Dogru-Yuksel Itir Bakis , Yilgor Iskender , Metin Önder , Nizamoğlu Sedat
Published: November 2022

We developed quantum dot (QD) based color-conversion white LEDs that reach over 150 lumens per electrical Watt. For that we synthesized alloyed ZnCdSe/ZnSe QDs with 94% of quantum efficiency and injected QD-liquids on blue LEDs.
High-power quantum-cascade lasers for 8 µm spectral region
Authors: Dudelev V.V. , Mikhailov D.A. , Cherotchenko E.D. , Chistyakov D.V. , Babichev A.V. , Mylnikov V. Yu. , Gladyshev A.G. , Losev S.N. , Novikov I.I. , Lyutetskiy A.V. , Slipchenko S.O. , Pikhtin N.A. , Karachinsky L. Ya. , Egorov A. Yu. , Sokolovskii G.S.
Published: November 2022

Combination of phosphorus-free molecular beam epitaxy (MBE) with metal-organic chemical vapor deposition (MOCVD) enabled record-high power quantum-cascade lasers (QCLs) for 8µm spectral region with total output power of over 16W under pulsed pumping.
Engineering of quantum barriers for efficient InGaN quantum well LEDs
Authors: Yapparov Rinat , Lynsky Cheyenne , Chow Yi Chao , Nakamura Shuji , DenBaars Steven P. , Speck James S. , Marcinkevičius Saulius
Published: November 2022

Ways to improve efficiency of high-power LEDs based on InGaN/(In)GaN multiple quantum wells are explored by studying interwell carrier transport and recombination. Best results are achieved for InGaN barriers with thin GaN or AlGaN interlayers.
Designing Photodetectors with Machine Learning
Authors: Simsek Ergun , Anjum Ishraq Md , Carruthers Thomas F. , Menyuk Curtis R.
Published: November 2022

Modern optimization techniques are used to design high-performance photodetectors. All the designs created during these optimization studies are then used to train a physics-inspired, two-stage neural network to obtain even better-performing devices.
Spin Multistability and Breaking of Detailed Balance in a Perovskite Semiconductor Tunable Cavity
Authors: Keijsers Giel , Peters Kevin J.H. , Geng Zhou , Verdonschot Bart , Malmir Kiana , Smith Jason , Rodriguez Said R.K.
Published: November 2022

In a perovskite semiconductor tunable cavity, we observe spin multistability and polarization switches breaking detailed balance. These phenomena are facilitated by the system’s large spin splitting and strong self- and cross-interactions of orthogonally polarized modes.
“Hot” electron generation in plasmonic nanostructures – thermal vs. non-thermal effects
Authors: Dubi Yonatan , Sarkar Subhajit , Un Ieng-Wai , Sivan Yonatan
Published: November 2022

We have developed a self-consistent theory for determining the electron distribution in plasmonic nanostructures under continuous-wave illumination, allowing, for the first time, a comparison of heating and non-thermal effects in the steady-state electron distributions.
Large Area Metal Surface Characterization using Plasmonic Random Laser based Imaging Technique
Authors: Gayathri R. , Suchand Sandeep C. S. , Vijayan C. , Murukeshan V. M.
Published: November 2022

We report the use of an incoherent random laser for high resolution, artefact-free wide-field microscopic imaging of metal surfaces, enabling large area surface characterization.
Aluminum-Based Schottky Photodetection Dominated by Leaky Plasmonic Mechanisms
Authors: Chang Yin-Jung , Hsiao Chun-Yu
Published: November 2022

Aluminum-based Schottky photodetection dominated by two leaky plasmonic mechanisms resolved by diffracted orders and eigenmode computations is demonstrated at visible frequencies. The measured per-unit-area responsivity is 298.1444 μA/mW/mm2 and the EQE is 2.6878%.
Rabi-like oscillations in topologically protected edge states of a photonic Floquet topological insulator
Authors: Wichmann Jan , Hanafi Haissam , Imbrock Jörg , Denz Cornelia
Published: November 2022

We report on topologically protected edge states in a four-band Lieb-like pho-tonic lattice of evanescently coupled helical waveguides. Our results demonstrate adjustable group velocities and oscillatory modal weight exchange depending on the edge termination.
Interlocked Constituents of Two-Frequency Pulse Compounds
Authors: Willms Stephanie , Melchert Oliver , Bose Surajit , Morgner Uwe , Babushkin Ihar , Demircan Ayhan
Published: November 2022

We observe that constituents forming two-frequency compounds are insep-arable units so that their properties are intrinsically linked, despite of a large frequency separation. This strong interconnection supports the robustness of compound states against perturbations.
Spatiotemporal Superfocusing of Ultrafast Terahertz Waves in Complex Media
Authors: Cecconi Vittorio , Kumar Vivek , Pasquazi Alessia , Gongora Juan Sebastian Totero , Peccianti Marco
Published: November 2022

We present a theoretical/experimental investigation of broadband, spatiotemporal superfocusing (SF) and field-modulation of ultrafast terahertz (THz) waves in scattering media combining the nonlinear conversion of spatially modulated ultrashort pulses with THz time-domain field detection.
Operating range of wavelength converters based on silica nanofibers immersed in liquids in the ns regime
Authors: Bouhadida Maha , Verdier Pierre-Enguerrand , Delaye Philippe , Lebrun Sylvie
Published: November 2022

We present the operating range of Raman wavelength converters based on silica nanofibers immersed in liquids for the design of all fibered wavelength converters that can be inserted in optical networks with very low losses.
Silicon Photonic Crystal Cavities for Spontaneous Four-Wave Mixing
Authors: Barone A. , Poempool T. , Clementi M. , Marcia A. , Liscidini M. , Bajoni D. , Gerace D. , Fromherz T. , Galli M.
Published: November 2022

We report the generation of nonclassical states of light through parametric fluorescence in a silicon photonic crystal cavity with equally spaced resonances in energy. The time correlation of photon pairs is confirmed by coincidence measurements.
Casimir-like laser pulse interaction: Molecules and soliton rain
Authors: Sulimany Kfir , Tziperman Offek , Bromberg Yaron , Gat Omri
Published: November 2022

Soliton in multipulse laser waveforms interact by suppression of quasi-cw fluctuations. Experiments in graphene-based and nonlinear-multimode-interference-based fiber lasers and theoretical analysis demonstrate the interactions manifest with stagnation points, accelerating trajectories, collisions, soliton molecules and phase locking transitions.
Desynchronisation-induced Raman Cavity Solitons in Fibre Resonators
Authors: Li Zongda , Xu Yiqing , Wen Xiaoxiao , Wang Wenlong , Wei Xiaoming , Yang Zhongmin , Coen Stéphane , Murdoch Stuart G. , Erkintalo Miro
Published: November 2022

We investigate novel cavity solitons that arise in pulse-pumped fibre resonators in the presence of desynchronisation and stimulated Raman scattering. The solitons possess numerous advantageous characteristics and could enable novel route to ultrafast pulses.
Temporal cavity solitons due to electromagnetically induced transparency
Authors: Oppo Gian-Luca , Grant David , Eslami Mansour
Published: November 2022

Temporal cavity solitons in a ring resonator filled with a three-level medium displaying electromagnetically induced transparency require less input power, have better shapes and produce optimal frequency combs than their two-level media counterparts.
Bistability of Light Plateaus and Oscillatory States for Counterpropagation in Ring Resonators
Authors: Campbell G. N. , Zhang S. , Bino L. Del , Haye P. Del , Oppo G.-L.
Published: November 2022

Stable light plateaus between two switching fronts are bistable with oscillatory states of homogeneous shape for two input beams counterpropagating in a ring resonator with normal dispersion. The plateaus are not the homogeneous states.
Enhanced four-wave mixing dynamics in epitaxial quantum dot laser on silicon
Authors: Ding Shihao , Dong Bozhang , Chow Weng , Bowers John , Grillot Frédéric
Published: November 2022

The four-wave mixing conversion efficiency of quantum dot laser is much higher than that of quantum well. These results are important for self-mode-locked pulse production and high-bandwidth optical frequency comb generation.
Steady-State Superfluidity of Light in a Tunable Cavity at Room Temperature
Authors: Keijsers Giel , Ham Torben , Geng Zhou , Peters Kevin J.H. , Wouters Michiel , Rodriguez Said R.K.
Published: November 2022

We report the first observation of superfluid cavity photons. Remarkably, the superfluid state emerges in a steady state and at room temperature, due to the strong thermo-optical nonlinearity of our oil-filled cavity.
Influence of Cross-Coupling on Dual-Wavelength Lasers Subject to Single Optical Injection
Authors: Abdollahi Shahab , Marin-Palomo Pablo , Virte Martin
Published: November 2022

We investigate experimentally and theoretically the response of dual-wavelength laser to single optical injection and focus on cross-coupling effect. We highlight a major influence of the coupling and power balance on the injection locking range.
Room Temperature Exciton-Polariton Cooling and Approaching Condensation in Red Fluorescent Protein
Authors: Deshmukh Prathmesh , Satapathy Sitakanta , Liu Bin , Molinaro Paul , Dirnberger Florian , Khatoniar Mandeep , Koder Ronald , Menon Vinod
Published: November 2022

We investigate the role of radiative pumping and cavity Q factor in stimulated scattering and room temperature cooling of exciton-polaritons in a red fluorescent protein coupled to a planar microcavity approaching a condensate phase transition.
Characterizing and Modeling Kerr Frequency Combs in Fiber Cavity Brillouin Lasers
Authors: Lucas Erwan , Deroh Moise , Kibler Bertrand
Published: November 2022

We study a re-configurable nonreciprocal ring cavity setup to generate tunable optical frequency combs. Coherent combs can be obtained by finely exploiting stimulated Brillouin scattering and cascaded four-wave mixing in the nonlinear fiber cavity.
UV-driven Multidimensional Solitary States in Hollow Core Fiber
Authors: Kumar Mayank , Arshadipirlar Maghsoud , Ibrahim Heide , Légaré François
Published: November 2022

We experimentally demonstrate the formation of multidimensional solitary states (MDSS) in N2O-filled hollow-core fiber (HCF), driven by ultraviolet (UV) sub-picosecond pulses.
Structural 3D Imaging of Collagen-rich Tissues Using Polarimetric SHG Microscopy with Linear and Circular Polarizations
Authors: Schmeltz Margaux , Raoux Clothilde , Latour Gaël , Schanne-Klein Marie-Claire
Published: November 2022

SHG microscopy is a unique tool for collagen visualization without any staining. Polarimetric approaches based on linear and circular polarizations further provide the orientation of collagen fibrils within and out of the imaging plane and their degree of disorder within the focal volume and in the field of view.
Low-threshold Highly Efficient Backward Wave OPO
Authors: Mølster Kjell Martin , Guionie Marie , Mutter Patrick , Dherbecourt Jean-Baptiste , Melkonian Jean-Michel , Délen Xavier , Zukauskas Andrius , Canalias Carlota , Laurell Fredrik , Georges Patrick , Raybaut Myriam , Godard Antoine , Pasiskevicius Valdas
Published: November 2022

Cavity-free, precision-tunable source of a nanosecond, mJ-level, pulses consisting of backward optical parametric oscillator pumped by diode-seeded laser amplifier shows a record threshold of 19 MW/cm2 and an optical-to-optical efficiency exceeding 70%.
Progress of DUV/VUV All-Solid-State Lasers
Authors: Wen Ning , Zhang Shenjin , Zong Nan , Gao Hongwei , Bo Yong , Peng Qinjun , Cui Dafu , Xu Zuyan
Published: November 2022

The main progress of generating all-solid-state deep ultraviolet (DUV) and vacuum ultraviolet (VUV) lasers with KBe2BO3F2 (KBBF) crystal is reviewed.
Highly Efficient First Stokes Generation in Gas-filled Hollow-core Photonic Bandgap Fibers
Authors: Avrahamy Roy , Halstuch Aviran , Belker Daniel , Ishaaya Amiel A.
Published: November 2022

We report highly efficient Raman conversion to the first Stokes in SF6-filled hollow-core photonic bandgap fibers. We obtained 70% conversion efficiency and observed dependency on the input polarization angle of the pump beam.
Intensity correlation in harmonic comb emitted by quantum cascade laser
Authors: Gabbrielli Tecla , Bruno Natalia , Corrias Nicola , Borri Simone , Consolino Luigi , Bertrand Mathieu , Shahmohammadi Mehran , Franckié Martin , Beck Mattias , Faist Jérôme , Zavatta Alessandro , De Natale Paolo , Cappelli Francesco
Published: November 2022

We demonstrate the presence of intensity correlation in the harmonic comb emitted by quantum cascade lasers, paving the way for a deeper understanding of the role of the four-wave-mixing process enabling this emission.
Energy Conversion Efficiency of High-Order Raman Soliton
Authors: Kormokar Robi , Rochette Martin
Published: November 2022

We predict analytically the energy conversion efficiency from the fission of a high-order soliton into fundamental solitons. Taking inter-pulse Raman gain into account, this prediction adds precision to the inverse scattering method prediction.
Generating Spatially Entangled Qubits using Quantum Nonlinear Holography
Authors: Yesharim Ofir , Pearl Shaul , Foley-Comer Joshua , Juwiler Irit , Arie Ady
Published: November 2022

We experimentally shape the quantum correlations of spatially entangled photon pairs in a two-dimensionally patterned KTiOPO4 crystal using nonlinear holography. Our method enables multi-dimensional engineering of quantum states directly using patterned nonlinear photonic crystals.
Terahertz 3D micro-tomography via time-resolved nonlinear ghost imaging
Authors: Olivieri Luana , Peters Luke , Totero Gongora Juan S. , Pasquazi Alessia , Peccianti Marco
Published: November 2022

Terahertz near-field microscopy represents a remarkable challenge, deeply limited by diffraction. With our technique; time-resolved nonlinear ghost-imaging, we demonstrate that spatio-temporal coupling affecting subwavelength measurements can be exploited as a lens, retrieving volumetric hyperspectral insights.
Thermal Instabilities, Oscillations, and Frequency Combs in Kerr Microresonators
Authors: Leshem Amir , Qi Zhen , Carruthers Thomas F. , Menyuk Curtis R. , Gat Omri
Published: November 2022

In a theoretical study of dissipative heating in Kerr microresonators we show that thermal effects shift the coexistence wedge and modulational instability curve of continuous waves, so as to block access to frequency combs, and exhibit a path circumventing the obstruction. Thermal oscillations occur beyond a Hopf bifurcation curve.
Time-Localized Patterns in VECSELs
Authors: Bartolo A. , Vigne N. , Marconi M. , Huyet G. , Beaudoin G. , Sagnes I. , Pantzas K. , Maucher F. , Gurevich S. , Javaloyes J. , Garnache A. , Giudici M.
Published: November 2022

We investigate spatially-extended self-imaging VECSELs in the regime localized mode-locking and we report on the observation of pulsating patterns which can be individually addressed. The patterns consist of a combination of an axial plane-wave with a set of tilted waves having a nearly hexagonal arrangement in the Fourier space.
Observation of longitudinal mode coupling in chaotic Q-switched vortex lasers
Authors: Lin Yuan-Yao , Xiao Yuan-Rong , Li Yu-Wei
Published: November 2022

A pulsed vortex laser formed by coherent superposition of off-axis resonating traveling waves. Sub-ns pulse as a result of mode coupling phenomena was observed in addition to periodic and chaotic oscillation under passive Q-switched operation.
Two-photon gates tolerant to the photons’ temporal wave shapes and joint correlations
Authors: Babushkin I. , Demircan A. , Kues M. , Morgner U.
Published: November 2022

Propagating photons are always present in form of pulses. Correlated and distinguishable photons typically break the gate action. Here we show a possibility of gates, independent on the photonic waveshapes and correlations between the photons.
Quantum nanophotonic hardware with integrated color centers
Authors: Radulaski Marina
Published: November 2022

Color center systems are the leading candidates for deterministic quantum sources, quantum repeaters, and other key devices for quantum information processing. Their integration with photonic devices is the direction toward high fidelity performance and scalability.
Polarimetry of a Polarising Object without Photon Interaction
Authors: Hance Jonte R. , Rarity John
Published: November 2022

We extend counterfactual, or exchange-free, imaging to the polarimetry of a polarising object. This allows imaging of these samples with far less absorbed energy - a key concern when imaging with high-frequency radiation.
Evaluating Energy Efficiency and Color Quality of LEDs Using Alternative Spectral Sensitivity Functions
Authors: Song W. , Durmus D.
Published: November 2022

Alterative sensitivity functions can be used to improve luminous efficacy and colorimetric calculation accuracy. Analyses found that LEDs are more susceptible to changes in spectral sensitivity functions compared to traditional light sources, especially for CCT.
Cove-edged nanographenes as a potential optical-gain media for lasing
Authors: Garcia-Orrit Saül , Vega-Mayoral Victor , Gu Yanwei , Schollmeyer Dieter , Narita Akimitsu , Cabanillas-González Juan , Qiu Zijie , Müllen Klaus
Published: November 2022

Photo-excited state’s dynamics, and optical gain properties of a novel and promising coved-edge nanographene are presented. Observation of ASE with ~1 mJ/cm2 threshold, and 80% of Quantum Yield, open the door towards future photonic applications.
Hyperuniform Disordered Structures for Light Trapping in Silicon Based Tandem Solar Cells
Authors: Höhn Oliver , Hauser Hubert , Mühlbach Kai , Bläsi Benedikt
Published: November 2022

We investigated a self-organization process leading to a hyperuniform structure for light trapping in silicon-based tandem solar cells. EQE measurements showed similar results with this bottom-up process as for the structures realized via NIL.
Optical Model with Combined Ray and Wave Optics for Optimization of Textures of Thin-Film Solar Cells
Authors: Saitta Federica , Smink Ivo , Limodio Gianluca , Santbergen Rudi , Isabella Olindo , Smets Arno
Published: November 2022

We extended the capabilities of our GenPro4 solar cell optical model, making it an even more powerful tool for nanotexture optimization. We show its application to thin-film CIGS, silicon, and perovskite/silicon tandem solar cells.
Fabricating High Aspect Ratio Front Contacts for Solar Cells by String-printing
Authors: Van de Voorde Mathis , Saive Rebecca
Published: November 2022

We developed a scalable fabrication method for high aspect ratio solar cell front contacts. This low temperature, low silver waste process can boost solar cell performance by decreasing optical and electric losses.
Study of Photonic Radiative Coolers Based on Semispheres for Silicon Photovoltaic Cells
Authors: Silva-Oelker Gerardo , Jaramillo-Fernández Juliana
Published: November 2022

We propose a photonic structure of semispheres for radiative cooling of silicon photovoltaic cells. Two materials are studied numerically: soda-lime and polydimethyl-siloxane. Results show an output power increment of ∼ 18 % and ∼ 5 %, respectively.
Radiative Cooling: From Super-White Paints to Selective Thermal Emitters for Cooling Vertical Surfaces
Authors: Raman Aaswath P. , Mandal Jyotirmoy
Published: November 2022

We demonstrate highly UV-reflective radiative cooling paints that can achieve near 99% solar reflectance and strong infrared emittance. We also present experimental findings of how vertical facades of buildings benefit from polymer-based selective thermal emitters.
Light Management in Photovoltaic Modules for Increased Energy Yield and Reduced Operating Temperature
Authors: Ferry Vivian E.
Published: November 2022

Crystalline Si photovoltaic modules operate at elevated temperatures when installed outdoors, which both reduces efficiency and leads to degradation. We discuss the use of selective reflectors to improve the energy yield and reduce the temperature.
Detection of malaria pigment crystals employing submicron air-holes photonic crystal fiber
Authors: Azad Saeed , Amouzou Koffi Novignon , Izquierdo Ricardo , Al-Shboul Ahmad , Ung Bora
Published: November 2022

Malaria pigments were synthesized and characterized via FTIR and SEM analysis. We further demonstrate the magneto-optical malaria diagnosis using submicron-sized photonic crystal fiber. Our results constitute another step towards quick and cost-effective malarial detection.
Controlling Directionality and Threshold Powers in a Fully Reciprocal but Unidirectional Fiber Ring Laser.
Authors: Arshad Muhammad Assad , Hartung Alexander , Jäger Matthias
Published: November 2022

Unidirectional lasing was recently demonstrated in a reciprocal all fiber ring laser. Here we characterize the factors controlling the required threshold and directionality of the laser. The factors include the linear and nonlinear propagation losses, which can be controlled to predefine the directionality and reduce the required threshold powers.
Linearly polarized ytterbium-doped fiber laser using antiresonant hollow-core fiber inline polarizer
Authors: Goel Charu , Li Huizi , Zang Jichao , Yoo Seongwoo
Published: November 2022

We report an antiresonant hollow-core fiber polarizer integrated into an ytterbium-doped fiber laser cavity to obtain linearly polarized single mode lasing with > 21 dB polarization extinction ratio for up to 25 W output power.
Non-Destructive Structural Characterisation of Double Nested Antiresonant Nodeless Fiber
Authors: Budd Leonard , Taranta Austin , Fokoua Eric R Numkam , Poletti Francesco
Published: November 2022

We present a side-scattering method for accurate, rapid and non-destructive measurement of double nested antiresonant nodeless fiber (DNANF) microstructure. The diameters of all nested tubular capillaries are measured with sub-micron accuracy.
Fiber Laser Power Measurements Using Optical Fibers with Metal Winding
Authors: Khramov I. , Ryabushkin O.
Published: November 2022

Various optical fibers with copper winding were used for the real-time measuring the fiber lasers output optical power. The mathematical model of the fiber heating allowed determining the induced microbending losses.
Length-dependent rotation of principal axes in antiresonant hollow-core fibers
Authors: Yelistratova Elizaveta , Demidov Vladimir , Leonov Stanislav
Published: November 2022

We observe a length-dependent rotation of principal axes’ angular orientation in two samples of antiresonant hollow-core fibers with low intrinsic birefringence and different number of capillaries.
Investigation of optical core-to-core crosstalk in multicore fibers
Authors: Steinkopff Albrecht , Aleshire Christopher , Klenke Arno , Jauregui Cesar , Nold Johannes , Kuhn Stefan , Haarlammert Nicoletta , Schreiber Thomas , Limpert Jens
Published: November 2022

We theoretically and experimentally investigate the optical cross-talk between cores of a multicore fiber. We show that the cross-talk not only depends on the numerical aperture and relative distance between the cores but also, crucially, on the size of the cores.