bluuebunny/crossref_metadata_2025 huggingface dataset:
Sensitivity-optimized waveguide-based methane gas sensor in the mid-IR
Authors: Lin Pen-Sheng , Quellmalz Arne , Huang Po-Han , Parhizkar Shayan , Negm Nour , Suckow Stephan , Ottonello-Briano Floria , Lemme Max C. , Niklaus Frank , Gylfason Kristinn B.
Published: September 2024

We demonstrate methane gas sensing using suspended silicon waveguides and experimentally validate the sensitivity optimization of waveguide-based gas sensors by varying waveguide lengths. This method enables application-optimized integrated optical gas sensors.
Tracing Methane Down to 300 ppb with a mid-IR Photonic Chip
Authors: Vlk Marek , Yallew Henock D , Zakoldaev Roman , Alberti Sebastián , Datta Anurup , Jágerská Jana
Published: September 2024

A Si slot waveguide was demonstrated for on-chip methane detection at 3270.4 nm. Maximizing light–analyte interaction to 68% and tailoring double-tip edge couplers to reduce spurious spectral etalons facilitated a record-low 300 ppb detection limit.
On the Large-Scale Field Experiment of Machine Learning-Aided Fiber-Optic Distributed Acoustic Sensing for Early Detection of Red Palm Weevils
Authors: Kang Chun Hong , Ashry Islam , Marin Juan M. , Ariff Talha , Rjeb Alaaeddine , Gunawan Wahyu Hendra , Ng Tien Khee , Ooi Boon S.
Published: September 2024

We report, for the first time, on the large-scale field deployment of machine learning-aided fiber-optic distributed acoustic sensing for the early detection of Red Palm Weevil larvae in fully operational date palm farms.
Multilayer Scintillators for Enhanced Energy Resolution in X-Ray Imaging
Authors: Min Seokhwan , Roques-Carmes Charles , Choi Seou , Pajovic Simo , Vaidya Sachin , Soljačić Marin
Published: September 2024

We present a three-component multilayer scintillator that can achieve greater x-ray energy resolution than conventional single or dual-component systems, from 10 to 100 keV. Our approach relies on spectral multiplexing of different x-ray energy bins.
Enhanced Stability in RF Transmission for Star Topology Fiber Optic Networks
Authors: Zhang Jie , Gao Hao , Zhao Zhuoze , Luo Bin , Yu Song
Published: September 2024

We characterize a star topology fiber optic network frequency transmission system. The achieved frequency transmission instability is 3.3 × 10
−
14 1 s within a 103 km fiber optic link in point-to-multipoint experiments.
Passive-mode-locked InP/LiNbO3 integrated soliton laser
Authors: Gao Zhengdong , Ling Jingwei , Xue Shixin , Hu Qili , Li Mingxiao , Zhang Kaibo , Javid Usman , Lopez-Rios Raymond , Staffa Jeremy , Lin Qiang
Published: September 2024

We report the first passive mode-locked soliton laser on a hybrid integrated InP/LiNbO3 platform, with a sech2-shaped spectrum and a repetition rate of 43.9 GHz. The passive mode locking results from a combined effect of optical gain, optical Kerr effect, and group-velocity dispersion inside the laser cavity.
Beyond the Linear Sweep of Frequency-Modulated Combs – Multi-Pulse Generation in Single-Section Diode Lasers
Authors: Sterczewski Lukasz A. , Bagheri Mahmood
Published: September 2024

Frequency comb generation with a linearly swept instantaneous frequency is a phenomenon occurring in many single-section semiconductor lasers. Here, we unveil a different emission profile consisting of bunches of pulses with a strong CW component.
3-D Free-Form Micro-Reflectors for Broadband and Low-Loss Scalable Fiber to Si-Waveguide Coupling
Authors: Ranno Luigi , Sia Jia Xu Brian , Popescu Cosmin , Weninger Drew , Serna Samuel , Yu Shaoliang , Kimerling Lionel C. , Agarwal Anuradha , Gu Tian , Hu Juejun
Published: September 2024

We report on the design and experimental verification of backend-compatible free-form reflectors designed for Si waveguides. Losses as low as 0.8 dB and 1-dB bandwidths exceeding 180 nm combined with high alignment tolerances were demonstrated. © 2024 The Author(s)
Demonstration of Thermal Characteristics of 3D Mirror-based Optical Link for Co-packaged Optics
Authors: Nakamura Fumi , Suda Satoshi , Kurosu Takayuki , Ibusuki Yasuhiro , Noriki Akihiro , Amano Takeru
Published: September 2024

The thermal tolerance of 3D mirror-based polymer optical link for co-packaged optics was demonstrated by both multi-physical analysis and experiment. The thermal-dependent difference of average insertion loss measured in the full O-band was 0.92 dB.
Low-loss Zero-index Waveguides and Devices
Authors: Dong Tian , Dai Tianxiang , Chen Ye , Liu Yueyang , Liu Hancheng , Wang Yiting , Ma Anqi , Hu Haifeng , Xu Lihua , Zhao Le , Chu Weiguo , Peng Chao , Wang Jianwei , Li Yang
Published: September 2024

We report flexible zero-index waveguides and devices whose loss is two orders of magnitude lower than the state of the art, enabling phase-error-free high-dense photonic integrated circuits for classical and quantum information processing and computing.
Exploring Chiral Laser Emission in Optical Cavities with achiral dye systems and 2D Chiral Organic Thin Film
Authors: Lin Li-Zhi , Huang Yi-Jan , Salij Andrew , Zinna Francesco , Di Bari Lorenzo , Huang Chia-Yen , Tempelaar Roel , Goldsmith Randall , Chen Tzu-Ling
Published: September 2024

Recent advancements demonstrate successful cavity-enhanced optical chirality via 2D chiral organic PTPO thin films. Investigating further, we explore the potential for chiral stimulated emission by incorporating this thin film into a POPOP dye laser cavity.
On-Chip Stimulated Brillouin Scattering Exploiting Polymer Waveguides with Nanoscale Footprint
Authors: Yadav Deepanshu , Singh Karanveer , Schneider Thomas
Published: September 2024

We demonstrate for the first time on-chip forward and backward stimulated Brillouin scattering (SBS) in nanoscale polymer (Ip-Dip) waveguides through numerical simulations, in which the maximum Brillouin gain coefficients up to (~ 2312 W
−
1m
−
1) has been obtained.
Impact of polarization direction on ultrafast laser stress generation in fused silica
Authors: Humphreys Caroline A. , Laverty Kevin A. , Arnold Ian J. , Chalifoux Brandon D.
Published: September 2024

Ultrafast laser-generated stress in fused silica, from lines of overlapping spots, depends on the linear polarization and writing directions. We present experimental evidence that this is not solely due to rotation of the nanograting orientation.
Fluctuation and dissipation in quantum nonlinear optics
Authors: Uddin Shiekh Zia , Rivera Nicholas , Seyler Devin , Salamin Yannick , Sloan Jamison , Xu Shutao , Sander Michelle Y. , Soljačić Marin
Published: September 2024

We present a new fluctuation-dissipation relation that shows how quantum noise transforms under engineered nonlinear dissipation found in many important nonlinear optical devices and validate the theory with experiments on nonlinear interferometers.
Photonic Probabilistic Computing Leveraging Quantum Vacuum Noise
Authors: Choi Seou , Salamin Yannick , Roques-Carmes Charles , Dangovski Rumen , Luo Di , Chen Zhuo , Horodynski Michael , Sloan Jamison , Soljačić Marin
Published: September 2024

We present a photonic probabilistic computing platform with a measurement-feedback scheme in a biased optical parametric oscillator. Probabilistic inference and generation of MNIST handwritten-digits are experimentally demonstrated.
Laser and Optical System for Sequential Resonant Excitation of High Energy Hydrogen Ion Beams
Authors: Oguz Abdurahim , Kay Martin , Liu Yun , Aleksandrov Alexander , Cousineau Sarah , Gorlov Timofey
Published: September 2024

We report the design and operation of 140 mJ UV (355 nm) laser and optical system used in the sequential photoexcitation of hydrogen ion beams at 1.0 GeV energy recently demonstrated at the Spallation Neutron Source accelerator.
Temporal and Spectral Characterization of Sub-100 ps in the OMEGA Laser Amplifier Chain
Authors: Donaldson William R. , Sampat Siddharth
Published: September 2024

Sub-100-ps pulse propagation in a 1-kJ-class laser amplifier chain has been characterized both temporally and spectrally. The short pulses have temporal and spectral widths that increase as the output energy increases, unlike nanosecond pulses.
Low Noise Millimeter-Wave Generation with Integrated Lasers and a Compact Fabry-Perot
Authors: Groman William , Kudelin Igor , Lind Alexander , Lee Dahyeon , Nakamura Takuma , Kelleher Megan , McLemore Charles A. , Guo Joel , Jin Warren , Bowers John , Quinlan Franklyn , Diddams Scott A.
Published: September 2024

We generate millimeter-waves up to 118 GHz via heterodyning two photonic chip lasers which are phase-locked to the same miniature F-P cavity. Phase noise as low as −120 dBc/Hz at 40 kHz offset is achieved.
Tunable X-band opto-electronic synthesizer for low noise microwave generation
Authors: Kudelin Igor , Shirmohammadi Pedram , Groman William , Hanifi Samin , Kelleher Megan , Lee Dahyeon , Nakamura Takuma , McLemore Charles , Bowers Steven , Quinlan Franklyn , Diddams Scott
Published: September 2024

An opto-electronic synthesizer is presented with phase noise at 10 kHz offset of -152 dBc/Hz, -146 dBc/Hz, and -140 dBc/Hz in the frequency range of 10 0.5 GHz, 10±1 GHz, and 10±2 GHz, respectively.
Measurement speed enhancement of dual-comb spectroscopy using two types of combs
Authors: Kashiwagi Ken , Okubo Sho , Inaba Hajime
Published: September 2024

We demonstrate dual comb spectroscopy using two different types of combs for high-speed measurement with high frequency resolution. The high resolution and high measurement speed were achieved by Er-fiber comb and EOM comb, respectively.
Mid-Infrared Cross-Comb Spectroscopy with a Single-Cavity Dual-Comb OPO Operating at 250 MHz
Authors: Bauer Carolin P. , Pupeikis Justinas , Willenberg Benjamin , Keller Ursula , Phillips Christopher R.
Published: September 2024

We demonstrate high-resolution spectroscopy by using a tunable 250-MHz OPO cavity as a transceiver for mid-infrared cross-comb spectroscopy. In a 2-s-long coherently-averaged measurement at 3.1µm we obtain a high spectral signal-to-noise ratio of 42 dB.
All-fiber Optical Pulse Storage Using Poled Fiber Modulators
Authors: Pereira João Manoel Barbosa , Spegel-Lexne Daniel , Alarcón Alvaro , Tarasenko Oleksandr , Claesson Åsa , Tow Kenny Hey , Margulis Walter , Xavier Guilherme B.
Published: September 2024

An all-fiber setup to store and retrieve light pulses using electric control is presented. The experiment is based on a Sagnac interferometer with a phase modulator fabricated using a poled fiber with internal electrodes.
Compact, ultrafast fiber lasers for molecular spectroscopy and biomedical imaging
Authors: Stachowiak Dorota , Bogusławski Jakub , Głuszek Aleksander , Hudzikowski Arkadiusz , Krzempek Karol , Tomaszewska-Rolla Dorota , Krakowski Mikołaj , Kwaśny Alicja , Soboń Grzegorz
Published: September 2024

We report the development of compact ultrafast lasers for applications in molecular spectroscopy and imaging of the human retina. The possibility of using AI-based algorithms to optimize ultrashort laser pulses will also be discussed.
Pluggable Single-Mode Chip-Chip Connections Using Facet-Attached Microlenses and Passive Mechanical Joints
Authors: Schwaab P. , Maier P. , Bao Y. , Singer S. , Worgull M. , Freude W. , Koos C.
Published: September 2024

We demonstrate low-loss single-mode chip-chip connections that combine pluggable mechanical joining elements with 3D-printed facet-attached microlenses (FaML). Our approach opens a path to flexible and simple assembly of photonic multi-chip assemblies without the need for high-precision alignment equipment.
Measuring the optical entropy of highly multimode beams in nonlinear optical fibers
Authors: Gemechu W.A. , Mangini F. , Ferraro M. , Zitelli M. , Sun Y. , Gervaziev M. , Kharenko D.S. , Babin S. , Couderc V. , Frezza F. , Wabnitz S.
Published: September 2024

We present a direct experimental study of the evolution of the optical entropy of a multimode light beam propagating in a graded-index optical fiber.
Jones-Matrix Dual-Comb Spectroscopic Polarimetry
Authors: Koresawa Hidenori , Kitahama Hiroki , Hase Eiji , Tokizane Yu , Asahara Akifumi , Minamikawa Takeo , Minoshima Kaoru , Yasui Takeshi
Published: September 2024

We propose an innovative approach that combines dual-comb spectroscopy with polarization control pulse sequences featuring distinct polarizations and time delays. This integration enables a detailed analysis of a sample's polarization response using the Jones matrix.
Ultra-Low Noise Cr:ZnS Laser Source for High Performance Dual Comb Spectroscopy
Authors: Vasilyev Sergey , Goma Mike , Moskalev Igor , Mishechkin Oleg , Barnakov Yury , Mirov Mike
Published: September 2024

We demonstrate high-power (3 W), few cycle (19 fs), fully referenced (timing jitter < 0.1 fs) optical frequency comb at the middle-IR central wavelength λ = 2.4 µm with ultra-low intensity noise (<0.1% RMS).
Broadly tunable continuous wave (986-1119 nm) and mode-locked (1009-1061 nm) Yb:YVO4 laser
Authors: Kilinc Muharrem , Demirbas Umit , Thesinga Jelto , Kellert Martin , Pergament Mikhail , Kärtner Franz X.
Published: September 2024

We present a broadly-tunable diode-pumped Yb:YVO4 laser with up to 4 W output in the 986-1119 nm range in continuous wave (CW) operation and 0.82 W output, with down to 70-fs pulses in mode-locked operation.
Loss Prediction and 3D Trajectory Design of Photonic Wire Bonds using Artificial Neural Networks (ANN)
Authors: Bao Yiyang , Paszkiewicz Maria , Krimmer Jonas , Freude Wolfgang , Randel Sebastian , Rockstuhl Carsten , Koos Christian
Published: September 2024

We present an artificial-neural-network-(ANN-)driven concept for predicting transmission losses of 3D-printed freeform waveguides within a few milliseconds and with root-mean-square errors of less than 0.5 %. Our approach enables transmission-optimized trajectory design of photonic wire bonds during fabrication.
All-optical nonlinear activation functions based on parity-time phase transition
Authors: Gong Zheng , Kurczveil Geza , Van Vaerenbergh Thomas , Cheung Stanley , Descos Antoine , Beausoleil Raymond G.
Published: September 2024

We propose a novel parity-time (PT) symmetric device to generate nonlinear activation for optical computing. By leveraging PT phase transition, our device can realize reconfigurable all-optical activation functions featuring low thresholds and low insertion loss.
An Integrated Cavity Soliton based Terahertz Voltage-controlled Oscillator
Authors: Javid Usman A. , Chojnacky Michal , Srinivasan Kartik , Moille Grégory
Published: September 2024

Kerr-induced synchronization enables direct control of a soliton microcomb’s repetition rate by a reference laser’s frequency. We demonstrate that dynamically tuning this frequency creates a coherent RF-to-THz optical link, resulting in a voltage-controlled THz oscillator.
High Q Suspended AlGaAs Microresonators for Kerr Comb Generation
Authors: Zhang Yuqian , Sun Changzheng , Xiong Bing , Wang Lai , Hao Zhibiao , Wang Jian , Han Yanjun , Li Hongtao , Gan Lin , Luo Yi
Published: September 2024

Suspended AlGaAs microring resonators are formed by combined plasma dry etching and chemical wet etching, exhibiting an intrinsic Q factor exceeding 1 million. Kerr comb generation with milliwatt level pump power is recorded.
Wafer-scale thermal diffusion of titanium into sapphire substrate
Authors: Wang Yubo , Guo Yu , Holguín-Lerma Jorge A. , Vezzoli Mattia , Tang Hong X.
Published: September 2024

We demonstrate the wafer-scale diffusion of titanium into sapphire substrates, optimizing thermal diffusion processes to yield epi-ready substrates. This platform is ideal for the monolithic integrated Ti:Sa lasers.
Spectral-Polarization-Selective Magneto-Optical Effect by Al-doped 4H-SiC Device with DPP-Assisted Annealing
Authors: Du Haoze , Kadowaki Takuya , Tate Naoya , Kawazoe Tadashi , Oki Yuji , Ohtsu Motoichi , Hayashi Kenshi
Published: September 2024

An Al-doped 4H-SiC device exhibits a large Verdet constant at a specific wavelength and polarization state via DPP-assisted annealing under the corresponding conditions. Thus, it can function as a novel MO-SLM for high-performance spectroscopic systems.
Small-error transmission and filter operation at 300 GHz using dissipative Kerr soliton frequency comb
Authors: Yomoda Ayaka , Imamura Mantaro , Tanikawa Koya , Kogure Soma , Sugano Ryo , Fujii Shun , Kawanishi Satoki , Tanabe Takasumi
Published: September 2024

Using a soliton microcomb, we generated 300 GHz waves and demonstrated a transmission experiment at 10 Gbit/s with an ultra-low bit-error rate of 10-9. We also demonstrated a photonic filter in the 300 GHz region, which adds another functionality in the terahertz regime.
Ultrafast multi-point three-dimensional quantum sensing
Authors: YE Junchen , WANG Yintao , AI Mingzhong , CHEN Bingxv , CHEN Shih-Chi , LI Quan , LIU Ren-Bao
Published: September 2024

We realized ultrafast three-dimensional tracking of multiple nanodiamond sen-sors using a digital micromirror device, and therefore achieved three-dimensional dynami-cal multi-point quantum sensing. This work enables a broad range of applications such as multi-point temperature monitoring in live cells.
Electron Beam Profiling Using Coherent Atomic Magnetometry
Authors: DeStefano Nicolas , Averett Todd , Zhang Shukui , Camsonne Alexandre , Park Gunn , Ramaswamy Aneesh , Malinovskaya Svetlana , Novikova Irina , Mikhailov Eugeniy , Aubin Seth
Published: September 2024

We reconstruct 2-D electron beam profiles using local measurements of its magnetic field via nonlinear magneto-optical polarization rotation in Rb vapor.
Mode-Hop-Free Tunable Chip-Scale Laser at 780 nm for Integrated Quantum Photonic and Atomic Applications
Authors: Castro Joshua E. , Pintus Paolo , Nolasco-Martinez Eber , Morin Theodore , Steiner Trevor J. , Thiel Lillian , Lewis Nicholas , Bowers John E. , Weld David M. , Moody Galan
Published: September 2024

We report a >100 GHz mode-hop-free tunable III-V-on-Si3N4 laser operating from 770-785 nm with < 5 kHz intrinsic linewidth. We demonstrate pumping of a high-Q Si3N4 microresonator entangled-photon pair source and locking to the 87Rb D2 line.
Niobium-Titanium Oxide (NbTiOx): a Novel High-Index Material for Visible and Near Infrared Integrated Photonics
Authors: Irvine David A. , MacFarlane Neil , Schreyer-Miller Aaron , Gibbs Aaron , Houck William D. , Foster Mark A. , Foster Amy C.
Published: September 2024

We demonstrate niobium-titanium oxide (NbTiOx), a sputtered metal oxide alloy, for visible and near-IR integrated photonics. In the near-IR, we achieve waveguide propagation losses < 1 dB/cm and a third-order nonlinearity 8× larger than Si3N4.
A New Method of Unidirectional Mode Cleaning in Large Core Fibers Using a Non-Hermitian Helical Perturbation
Authors: Chen Mingshu , Zhou Huanyu , Staliunas Kestutis , Galvanauskas Almantas
Published: September 2024

A large-core effectively single-mode fiber is proposed using mode cleaning by unidirectional coupling from higher-order to fundamental mode via helical non-Hermitian perturbation. Unidirectionality offers a pathway to a variety of novel large-core fiber devices.
Machine-Learning-Optimized OAM Excitation in Optical Fibers
Authors: Demas Jeffrey , Hary Mathilde , Genty Goëry , Ramachandran Siddharth
Published: September 2024

We develop a machine learning algorithm for in situ control and optimization of OAM excitation in optical fibers, ensuring high-purity and low-loss coupling. The algorithm can correct intentional misalignments, as well as compensate alignment drift.
A Two-Photon Rb Clock Based on Direct Comb Excitation
Authors: Tooley Dylan P. , Erickson Seth E. , Weerasinghe Kushan , Zhu Xiushan , Chavez-Pirson Arturo , Jones R. Jason
Published: September 2024

An optical atomic clock based on direct comb excitation of Rb87 is demonstrated with performance rivaling similar, continuous-wave clocks. Signal to noise and systematics are shown comparable, with Allan deviations of 1.5E-13 at one second.
Hybrid frequency locking of a coin-sized laser module using both linewidth narrowing and Doppler-free spectroscopy
Authors: Nomura Junia , Akamatsu Daisuke , Hong Feng-Lei
Published: September 2024

We demonstrate a hybrid frequency locking method for a broad-linewidth coin-sized laser module based on linewidth reduction using a short-path imbalance fiber interferometer and Doppler-free spectroscopy of molecular iodine.
Single-shot Measurements of Shaped XUV FEL Pulses with Frequency Resolved Optical Gating
Authors: Elverson Francesca , Skrodzki Patrick , Scheinker Alexander , Foglia Laura , Garzella David , Nikolov Ivaylo , Pancaldi Matteo , Pedersoli Emanuele , Susnjar Peter , Giannessi Luca , Danailov Miltcho B. , Capotondi Flavio , Bencivenga Filippo , Bowlan Pamela
Published: September 2024

We demonstrate work implementing auto-differentiation in the phase retrieval algorithm applied on Transient Grating (TG) XFROG traces, to measure shaped extreme-ultraviolet (XUV) Free Electron Laser pulses.
Towards Real-Time Ultrafast Ptychography with Unsupervised Deep Learning
Authors: Grova Carmelo , Bevis Charles S. , Giani Nicola , Adams Daniel E. , Mancini Giulia F. , Pellegrini Giovanni
Published: September 2024

We couple an untrained neural network to a complete physical model that describes Ptychography-like image formation process. We demonstrate robustness, high fidelity, full-field image reconstruction and fast convergence with smart weight initialization.
High power >1.5W tunable laser based on integrated LMA power amplifier
Authors: Singh Neetesh , Lorenzen Jan , Sinobad Milan , Wang Kai , Kilinc Muharrem , Francis Henry , Carriera Jose , Geiselmann Michael , Pergament Mikhail , Demirbas Umit , Garcia-Blanco Sonia M , Kärtner Franz X.
Published: September 2024

We demonstrate high power tunable laser using a CMOS-compatible integrated LMA power amplifier. We show amplified power up to 1.5 W from around 100 mW of input seed power in the wavelength window spanning from 1800 to 1900 nm.
Broadband Terahertz emitters from phase-matched lithium niobate photonics
Authors: Lampert Yazan , Shams-Ansari Amirhassan , Tomasino Alessandro , Rajabali Shima , Lončar Marko , Benea-Chelmus Ileana-Cristina
Published: September 2024

We present emission up to 3 THz from a phase-matched terahertz-optical photonic circuit, featuring a co-planar metallic cavity traversed by an optical rib waveguide and a dipolar antenna for efficient out-coupling of terahertz waves.
Horizontal Coupling of a Printed Passive Wedge-shaped Microdisk Resonator to Photonic Integrated Circuits
Authors: van Schoonhoven Frederik , Tomishige Yoshitaka , Postigo Alejandro Sánchez , Abazi Adrian , Chen Jinghan , Mikami Yuya , Tate Naoya , Oki Yuji , Schuck Carsten , Yoshioka Hiroaki
Published: September 2024

We successfully integrated a printed, wedge-shaped microdisk resonator into a photonic circuit, allowing coupling of spatially separated whispering gallery modes into an SU-8 ridge waveguide and interfacing with integrated optical circuits.
On-chip meta-lens based Adaptive Integrated Photonic Imager
Authors: Kim Jong Ryul , Jeong Heijun , Gu Tingyi
Published: September 2024

We demonstrate single-drive adaptive on-chip meta-lens imager with optimized profile for doped silicon heater and metal heaters.
Subwavelength Fano Resonant Porous Silicon Metasurfaces for Sensing and Dynamic Structural Color
Authors: Gafsi Saddam , Santos Estevao Marques Dos , Kravchenko Ivan , Ryckman Judson D.
Published: September 2024

We introduce the design, fabrication, and experimental investigation of subwavelength Fano resonant porous silicon metasurfaces functioning on the principle of guided mode resonance. These metasurfaces exhibit promise for dynamic structural coloration and sensing applications.
Temperature dependent implantation of As-Isoelectronic Impurity in GaN Micro and Nanostructures
Authors: Waseem Aadil , Chan Clarence , Wu Xihang , Liu Yujie , Shen Yifan , Kapritsos Manos , Norris Theodore B , Li Xiuling
Published: September 2024

To enhance solar photo absorption of III-N semiconductors, we demonstrate Arsenic implantation at elevated temperatures, improving doping activation and reducing crystal damage.
Arbitrary Waveforms From a Fine-Resolution Microresonator-Based Spectral Shaper
Authors: Cohen Lucas M. , Wu Kaiyi , Myilswamy Karthik V. , Lingaraju Navin B. , Weiner Andrew M.
Published: September 2024

We report a scheme for programming microresonator-based spectral pulse shapers and demonstrate it with a six-channel, sub-GHz linewidth, silicon photonic spectral shaper to generate arbitrary waveforms from optical lines of a 3 GHz electro-optic comb.
Reconfigurable Circular Dichroism in Wafer-scale Twisted Stacks of Aligned Carbon Nanotube and Phase Change Material Heterostructures
Authors: Fan Jichao , Lou Minhan , Chen Ruiyang , Hong Nina , Gao Weilu
Published: September 2024

We experimentally demonstrated reconfigurable circular dichroism in wafer-scale twisted stacks of aligned carbon nanotubes and phase change material heterostructures. The structural parameters of stacks were optimized and inversely designed based on the backpropagation algorithm.
1-MHz 500-nJ Mamyshev Oscillator with Hollow Core Fiber
Authors: Yan Jikun , Xu Duanyang , Mulvad Hans Christian , Jung Yongmin , Poletti Francesco , Richardson David J. , Xu Lin
Published: September 2024

We present the development of a Mamyshev oscillator (MO) operating at 1040 nm with a low repetition rate of 1.18 MHz enabled by a hollow core fiber. The MO produces ultrashort pulses with a maximum pulse energy of 514 nJ and a minimum de-chirped pulse width of 46 fs.
Silicon Integrated Photonic-Electronic Multiply-Accumulate Neurons
Authors: Roumpos I. , De Marinis L. , Kincaid P. S. , Paolini E. , Kovaios S. , Tsakyridis A. , Moralis-Pegios M. , Berciano M. , Ferraro F. , Bode D. , Srinivasan A. , Pantouvaki M. , Contestabile G. , Vyrsokinos K. , Pleros N.
Published: September 2024

We experimentally demonstrate an EAM-based photonic-electronic multiply-accumulate neuron that performs inference in a health monitoring task with 1350 trainable parameters, achieving an f1 score of 85.9 % at 10 Gbaud compute rate.
Passive On-Chip Nonlinear Optical Isolators with Built-in Laser Stabilization
Authors: White Alexander D. , Ahn Geun Ho , Van Gasse Kasper , Luhtaru Richard , Guo Joel , Morin Theodore J. , Chang Lin , Bowers John E. , Vučković Jelena
Published: September 2024

We demonstrate fully passive optical isolators in silicon nitride nanophotonics using the intrinsic Kerr nonlinearity. These devices serve to both stabilize and isolate on-chip lasers, reducing the linewidth of DFB lasers by orders of magnitude.
Parasitic loss by a cutoff waveguide and its impact on wide-band nonlinear integrated microresonator photonics
Authors: Sun Yi , Pimbi Daniel , Lu Xiyuan , Srinivasan Kartik
Published: September 2024

We examine a non-intuitive loss channel where a cutoff waveguide induces parasitic loss in a microring resonator. This loss at telecom wavelengths limits the spectral extent of green light generation in microresonator optical parametric oscillators.
All-silica fiber laser emitting two-octave frequency combs
Authors: Zhang Yanyan , Xing Sida
Published: September 2024

We describe the conditions for generating multi-octave frequency combs in all-silica-fiber configuration. Experimental demonstration of a 200 MHz frequency comb covering 0.8 μm to 3.5 μm with a smooth mid-infrared part proved its validity.
Soliton Pulse Compression in Lithium Niobate Nanophotonics
Authors: Gray Robert M. , Zacharias Thomas , Chawlani Rahul , Ledezma Luis , Sekine Ryoto , Williams James A. , Marandi Alireza
Published: September 2024

We show that soliton pulse compression in lithium niobate nanophotonics can enable formation of few-cycle pulses. We experimentally confirm such nonlinear dynamics and measure chirped 44-fs output pulses consistent with numerical simulations.
Direct imprint of topologically protected polarization textures of optical skyrmions onto a material
Authors: Tamura Rihito , Kumar Praveen , Rao A. Srinivasa , Miyamoto Katsuhiko , Omatsu Takashige
Published: September 2024

We demonstrate the direct imprint of the topologically protected polarization textures of Néel-, and anti-optical skyrmions, onto a material as a photo-induced surface relief, manifesting the exotic light-matter interaction with topologically protected quasiparticles of light.
Following in van Leeuwenhoek’s Footsteps – Subwavelength Imaging by Contact Ball Lenses
Authors: Astratov Vasily N. , Jean Amstrong R. , Paudel Dipendra , Maslov Alexey V.
Published: September 2024

It is shown that the ball lenses placed in contact with the samples provide micron-scale resolution over millimeter-scale field-of-view in cellphone-based microscopy. It is shown that they significantly enhance the resolution of fluorescent confocal microscopy.
783-MHz fundamental repetition rate CNT mode-locked all Er-doped fiber ring laser
Authors: Dai Maolin , Liu Bowen , Ma Yifan , Shirahata Takuma , Yang Ruoao , Zhang Zhigang , Set Sze Yun , Yamashita Shinji
Published: September 2024

We realize 783-MHz fundamental repetition rate in a carbon-nanotubes (CNT) mode-locked Er-doped fiber ring laser with all active fibers. The proposed laser self-starts mode-locking at 108-mW pump power and delivers 623-fs pulses directly.
Spectral Speckle Customization
Authors: Bender Nicholas , Haig Henry , Christodoulides Demetrios N. , Wise Frank
Published: September 2024

We present an experimental technique for customizing the spatio-spectral speckled intensity statistics of ultra-short optical pulses at the output of a a disordered multimode fiber by controlling the spatial profile of the input light.
Silicon Multi-Functional Photonic Processing Chip for Multiply-Accumulate Computation
Authors: Wang Rou , Lu Liangjun , Liu Yuanbin , Wu Yue , Li Yu , Chen Jianping , Zhou Linjie
Published: September 2024

We propose a silicon multi-functional photonic processing chip for multiply-accumulate computation (MAC), which is capable for high-speed data encoding and flexible weight control. Experimental results verify a 6-bit MAC precision and image convolution operation.
Pulse energy scaling of post-compression using folded multi-pass cells
Authors: Schönberg Arthur , Rajhans Supriya , Khodakovskiy Nikita , Escoto Esmerando , Hariton Victor , Leemans Wim P. , Hartl Ingmar , Heyl Christoph M.
Published: September 2024

We present a concept for pulse energy scaling of post-compression using a folded multi-pass cell geometry. We experimentally show efficient spectral broadening of 8 mJ pulses and demonstrate compression from 1 ps to 51 fs in a compact setup.
146W, 7 fs, 11 µJ Thin-Disk Oscillator Compressed with Multipass Cells
Authors: Goncharov Semyon , Fritsch Kilian , Pronin Oleg
Published: September 2024

We report nonlinear broadening and pulse compression in two consecutive multipass cells based on dielectric mirrors. The 120 fs pulses at 14 MHz containing 12.8 µJ were compressed to 7.2 fs with 146 W average power.
Experimental Demonstration of Optical Transcoding of 5-Gbit/s OOK Data Signal by Recovering One of The Two Channels of 10-Gbit/s QPSK Data Signal Using Wave-Mixing
Authors: Karapetyan Narek , Minoofar Amir , Alhaddad Abdulrahman , Ko Wing , Zhou Huibin , Ramakrishnan Muralekrishnan , Tur Moshe , Habif Jonathan L. , Willner Alan E.
Published: September 2024

We demonstrate optical transcoding of 5-Gbit/s OOK data signal from 10-Gbit/s QPSK data signal. A BPSK signal is first generated by constellation squeezing through four-wave-mixing, and then it is shifted to the OOK signal through coherent vector addition.
Large Optical Tweezer Arrays Generated by Integrated Optical Meta-Microscopes
Authors: Koksal Okan , Hsu Ting-Wei , Song Junyeob , Wang Zi , Brown Mark O. , Regal Cindy , Agrawal Amit , Lezec Henri , Zhu Wenqi
Published: September 2024

We demonstrate meta-microscopes based on doublet metalenses that form high-quality optical dipole trap arrays capable of trapping single atoms and discuss how these microscopes can be designed to robustly for maximum performance.
Near-Unity-Efficiency Frequency Conversion on a Silicon-Nitride Chip
Authors: Zhao Yun , McNulty Karl J. , Lipson Michal , Gaeta Alexander L.
Published: September 2024

We demonstrate on-chip frequency conversion with Bragg scattering four-wave mixing that reaches an on-chip efficiency of 95%.
Optimizing the Generation of Large Cluster States With Residual Visibility Measurements
Authors: Vidro Leonid , Guichard Valentin , Fioretto Dario , Belabas Nadia , Senellart Pascale , Eisenberg Hagai
Published: September 2024

We create 6-photon linear cluster states using a resource-efficient quantum dot single photon source and linear optics setup. Shorter, high-rate, states created in the process give indications on the quality of alignment and interference for optimization.
Near-Infrared Thin Film Lithium Niobate Platform for Multiplexed Quantum Nodes
Authors: Renaud Dylan , Assumpcao Daniel , Baradari Aida , Zeng Beibei , Shams-Ansari Amirhassan , Machielse Bart , Loncar Marko
Published: September 2024

We report on near-infrared thin-film lithium niobate devices for scaling up quantum nodes. We demonstrate integrated low-insertion loss couplers, frequency shifters, laser pulse generators, switches, and more.
High Efficiency InGaN/GaN Nanowire LED Utilizing Exciton Recombination Dynamics
Authors: Malhotra Yakshita , Pandey Ayush , Min Jungwook , Reddeppa Maddaka , Xiao Yixin , Li Zidong , Kan Yuchen , Guo Yifu , Wu Yuanpeng , Sun Kai , Deotare Parag , Mi Zetian
Published: September 2024

Facet formation in InGaN disc-in-wire LEDs leads to increased exciton binding energy due to strain relaxation and reduced polarization fields resulting in an ultra-high efficiency of 25.2% for green emission utilizing excitonic recombination dynamics.
Continuous Wave Interband Cascade Lasers Near 13 µm
Authors: Shen Yixuan , Yang R. Q. , Hawkins S. D. , Muhowski A. J.
Published: September 2024

We report continuous wave (cw) operation of interband cascade lasers (ICLs) with innovative active region operating near 13 µm, the longest cw emission wavelength among ICLs, showing the further potential of ICLs.
High quality lithium niobate Euler racetrack resonators
Authors: Kang Shuting , jia Di , Yu Xuanyi , Gao Feng , Bo Fang , Zhang Guoquan , Xu Jingjun
Published: September 2024

We demonstrated Euler racetrack resonators on X-cut thin film lithium niobate with intrinsic quality factors up to 5.53 million and free spectrum range standard deviation 33 times lower than the circular racetrack microcavity.
Noise Limits in Kerr Microresonator Optical Parametric Oscillators
Authors: Stone Jordan R. , Lu Xiyuan , Moille Gregory , Srinivasan Kartik
Published: September 2024

We explore frequency noise associated with Kerr optical parametric oscillation (OPO), identifying a spectral translation regime as well as fundamental decoherence due to thermorefractive noise. We demonstrate OPO linewidth reduction via active feedback.
Fast and Efficient Solver for Raman Amplifier Equations Employing Neural Networks
Authors: Zhang Li , Pincemin Erwan , Genay Naveena , Zibar Darko
Published: September 2024

The proposed solver enables significant improvements in terms of computational time compared to standard Runge-Kutta approach, and enables ultra-fast gain predictions.
Sub-kHz linewidth integrated Pockels laser
Authors: Xue Shixin , Li Mingxiao , Ling Jingwei , Gao Zhengdong , Hu Qili , Lopez-Rios Raymond , Staffa Jeremy , Xiang Chao , Wang Heming , Bowers John E. , Lin Qiang
Published: September 2024

We demonstrate a sub-kHz linewidth integrated Pockels laser with a mode-hop-free linear frequency modulation range of 15 GHz, and an on-chip power of 5.4 mW.
Microresonator-based optical frequency division for ultralow-noise microwave synthesis
Authors: Jin Xing , Xie Zhenyu , Hou Hanfei , Zhang Fangxing , Zhang Xuanyi , Gong Qihuang , Yang Qi-Fan
Published: September 2024

Utilizing a MgF2 microresonator as optical reference and a Si3N4 microresonator as comb generator, we synthesize ultralow-noise 25-GHz rate microwave with -141 dBc/Hz phase noise at 10 kHz offset frequency via optical frequency division.
Phase-Matched Second-Harmonic Generation from Metasurfaces Inside Multipass Cells
Authors: Mekhael Madona , Stolt Timo , Vesala Anna , Rekola Heikki , Hakala Tommi K. , Fickler Robert , Huttunen Mikko J.
Published: September 2024

We demonstrate scalable enhancement of second-harmonic generation (SHG) of metasurfaces through multipass cells. We achieve phase matching with superlinear dependence on the number of passes, promising applications in diverse nonlinear optics.
Dual-Wavelength CW and CW mode-locked Cr:Colquirrite Lasers
Authors: Erturk Zekican , Kilinc Muharrem , Okuyucu Serdar , Ozturk Yusuf , Pergament Mikhail , Kärtner Franz X. , Demirbas Umit
Published: September 2024

We show the versatile dual-wavelength operation of Cr:LiCAF and Cr:LiSAF lasers around 790 and 850 nm using diving optical-axis birefringent filters. In mode-locked regime, tunable synchronous two-color picosecond pulses with THz beating frequency are realized.
Fast, High-Resolution Image-Based Spatial Mapping of Phase-Matching Conditions in Nonlinear Crystals
Authors: Wampler Rhett , Dorrer Christophe
Published: September 2024

Phase-matching conditions for second-harmonic generation in nonlinear crystals are spatially mapped by imaging the output of a scanned beam, producing results with higher resolution than an integrated-power, point-measurement approach while also improving scan time.
Correlation of quantum efficiency to ion concentrations in Er:BaF2 nanoparticle optical fiber
Authors: Campbell Jennifer , Cahoon Mary Ann , Gachich Michael , Norlander Michael , Pietros Alexander , Hawkins Thomas , Ballato John , Dragic Peter
Published: September 2024

Highly Er concentrated Er:BaF2 nanoparticle doped silica fibers exhibit subdued quenching effects and possess relatively high quantum efficiency (QE) (976 nm pumping). Investigations herein probe the change in QE with increasing Er concentration.
Efficient diffraction-limited cladding-pumped ytterbium fiber laser at ~994nm
Authors: Kalichevsky-Dong Monica T. , Bingham Samuel , Hawkins Thomas W. , Dragic Peter , Ballato John , Dong Liang
Published: September 2024

We demonstrate for the first time a diffraction-limited cladding-pumped ytterbium fiber laser at ~994nm with 41W output power, ~55% optical efficiency, and 1.8% quantum defect, opening new wavelengths of operation for cladding-pumped ytterbium fiber lasers.
Low-noise Microwave Signal Generation by Heterodyning Two Narrow-linewidth Self-injection Locked Lasers
Authors: Fan Yihao , E Siyu , Guo Yuyao , Li Xinhang , Lu Liangjun , Wang Shuxiao , Cai Yan , Chen Jianping , Zhou Linjie
Published: September 2024

We realize a hybrid integrated self-injection locking laser (SIL) with an ultra-narrow intrinsic linewidth of 5 Hz. With heterodyne synthesis using a pair of SILs, a microwave signal with a 4-kHz linewidth is achieved.
Automated Tuning of an Integrated InP Laser Comprising an 8-arm Intra-Cavity Filter
Authors: Booij T.B.N. , Tondini S. , Kabir T. , Fattori M. , Cantatore E. , Heck M.J.R.
Published: September 2024

We demonstrate a tuning method for an InP integrated tunable laser based on stochastic optimization. A tuning range of 40 nm is attained when applied to a laser design comprising an 8-arm intra-cavity Mach-Zehnder Interferometer.
Subwavelength-engineered Antislot Photonic Crystals in a Silicon Photonics Foundry for On-chip Communications
Authors: Arnold Kellen P. , Allen Joshua A. , Halimi Sami I. , Ryder Landen D. , Afzal Francis O. , Bian Yusheng , Aboketaf Abdelsalam , Hirokawa Takako , Dezfulian Kevin , Rakowski Michal , Augur Rod , Nummy Karen , Weiss Sharon M.
Published: September 2024

We report scalable foundry fabrication and characterization of photonic crystal nanobeam waveguides incorporating subwavelength-scale dielectric antislot unit cells. This work enables enhanced light-matter interaction and three-fold improvement in VπL when incorporated in Mach-Zehnder modulators.
Constraint immune design of ultrahigh-Q silicon photonic crystal nanocavities
Authors: Kuramochi Eiichi , Kita Shota , Shinya Akihiko , Notomi Masaya
Published: September 2024

We reveal that setting r/a to ~0.2 makes L3 nanocavity more easily have a higher theoretical Q factor and experimentally immune to fabrication errors such as sidewall roughness.
Measuring and processing partially coherent light with self-configuring optics
Authors: Roques-Carmes Charles , Fan Shanhui , Miller David A. B.
Published: September 2024

We show that self-configuring optical networks can analyze partially incoherent light. We consider the case of N spatial input channels and present a power-optimization method to measure their coherency matrix.
High-power single-frequency multimode fiber amplifier with good beam quality
Authors: Rothe Stefan , Chen Chun-Wei , Ahmadi Peyman , Wisal Kabish , Ercan Mert , Vigne Nathan , Stone A. Douglas , Cao Hui
Published: September 2024

We demonstrate a single-frequency multimode-fiber amplifier free of stimulated Brillouin scattering up to 474 W. The optical efficiency is 89 % and spectral linewidth is 19.8 kHz. We focus the output beam using input wavefront shaping.
15 W 2-µm InGaSb Optically Pumped Semiconductor Membrane Laser (MECSEL)
Authors: Schuchter Maximilian C. , Huwyler Nicolas , Golling Matthias , Gaulke Marco , Keller Ursula
Published: September 2024

We present the first diode-pumped GaSb-based MECSEL, directly bonded onto a SiC heatspreader, operating at 2080 nm. A continuous-wave output power of 1.5 W and up-to-date lowest thermal resistance of 0.74 K/W is achieved.
SWIR VCSELs Enabled by Homoepitaxial Nanoporous-InP DBRs
Authors: Li Bingjun , Mi Chenziyi , Kang Jin-Ho , Elafandy Rami T. , Han Jung
Published: September 2024

High-index-contrast InP DBRs were realized through a conductivity-selective electrochemical porosification process. Furthermore, continuous-wave (CW) operation of NP-InP VCSELs were demonstrated at both 1,380 and 1,550 nm from two separate structures with milli-watt output power.
Symmetry breaking of the χ(2) polarization in poled thin film lithium niobate waveguides enabling phase matching
Authors: Hefti Olivia , Tremblay Jean-Etienne , Volpini Andrea , Zarebidaki Homa , Prieto Ivan , Dubochet Olivier , Despont Michel , Lecomte Steve , Brès Camille-Sophie , Sattari Hamed , Grassani Davide
Published: September 2024

Poling the bottom of etched LNOI waveguides enables modal phase matching with an anti-symmetric mode and a measured second harmonic generation efficiency of 1980 %W-1cm-2. The simple design allows for reproducible on-chip frequency conversion.
Superharmonic Injection Locking in Bragg-Reflection Waveguide Lasers
Authors: Blakey Phillip S. , Janjua Bilal , Helmy Amr S.
Published: September 2024

The intra-cavity second order nonlinearity of a Bragg-reflection waveguide laser (BRW laser) was used to generate a second harmonic signal that serves as seed for injection locking the BRW laser. The exact phase-matching inside the BRW allows for the generation a second harmonic signal directly in the laser cavity. The subsequent injection locking results in a phase-coherent signal at the second-harmonic frequency of the master laser with a power 23.19dB higher than the second-harmonic signal from the unbiased unlocked device.
Improving Frequency Noise of DFB Fiber Lasers by Acoustic Wave Suppression
Authors: Pertoldi Andrea , Engelsholm Rasmus D. , Galinskiy Ivan , Varming Poul , Montague Patrick B.
Published: September 2024

The frequency noise of narrow linewidth fiber l aser c an b e i mproved by addressing resonant longitudinal acoustic waves in the optical cavity. Comprehensive measurements and simulations of phonon modes aid in understanding and mitigating this phenomenon.
Waveguide Integrated Avalanche Photodiodes for Quantum Applications
Authors: Sjaardema T. , Boady M. , Starbuck A. , Pomerene A. , Trotter D. , Otterstrom N. , Gehl M.
Published: September 2024

We demonstrate evanescently coupled waveguide integrated silicon photonic avalanche photodiodes designed for single photon detection for quantum applications. Simulation, high responsivity, and record low dark currents for evanescently coupled devices are presented.
Wafer-Scale Fabrication of InGaP-on-Insulator for Nonlinear Quantum Photonics Applications
Authors: Thiel Lillian , Castro Joshua E. , Steiner Trevor J. , Lewis Nicholas , Bowers John E. , Moody Galan
Published: September 2024

We present 100-mm wafer fabrication of InGaP-on-insulator—a promising integrated quantum photonic platform with strong χ(2) and χ(3). We achieve 3.25 dB/cm waveguide loss and microresonators with Q > 160,000 for entangled-pair generation.
Thermometric Control of the Resonance Frequency of a High-Q Si3N4 Microresonator
Authors: Dacha Sai Kanth , Zhao Yun , McNulty Karl J. , Lipson Michal , Gaeta Alexander L.
Published: September 2024

We demonstrate a new method to stabilize the absolute resonance frequency of a high-Q Si3N4 microcavity against long term drift using an on-chip temperature sensing and control scheme.
Imaging of standing-wave patterns from a bi-directionally pumped microresonator
Authors: Yan Haochen , Ghosh Alekhya , Pal Arghadeep , Zhang Hao , Bi Toby , Ghalanos George , Zhang Shuangyou , Hill Lewis , Zhang Yaojing , Zhuang Yongyong , Xavier Jolly , Del’Haye Pascal
Published: September 2024

We perform real-time imaging of standing waves in bi-directionally pumped microresonators. This is achieved by collecting scattered light with a short-wave infrared camera. The measurements enable subwavelength distance measurements of scattering sources with nanometer-level accuracy.
Single-Shot, High-Repetition Rate Carrier-Envelope-Phase Detection of Ultrashort Laser Pulses
Authors: Guo Chen , Miranda Miguel , Raab Ann-Kathrin , Viotti Anne-Lise , Guerreiro Paulo Tiago , Romero Rosa , Crespo Helder , L’Huillier Anne , Arnold Cord L.
Published: September 2024

We propose a single-shot Carrier-Envelope Phase measurement scheme, based on evaluating f-2f fringes by means of optical Fourier transform. The method is suitable for measuring at high-repetition rate (> 200kHz) and low pulse energy.
Machine Learning for Quantum Cascade Laser Design and Optimization
Authors: Hernandez Andres Correa , Gmachl Claire F.
Published: September 2024

A machine learning framework is used to predict the laser performance of 109 quantum cascade laser designs in 8 hours. The algorithm demonstrates how to optimize the layer structure, yielding a 2-fold increase in performance.
Artificial neural networks for laser frequency stabilization
Authors: Winkler Lisa , Nölleke Christian
Published: September 2024

We present a machine learning approach to automatic frequency locking of lasers based on artificial neural networks. We show that this method reliably identifies the target line under a wide range of operating conditions.
A Real-time Demonstration of Bidirectional Multi-format/Rate-adjustable Integrated Laser Communication/Ranging for Satellite Communication
Authors: Wang Yizhou , Wang Yuanxiang , Luo Zhen , Zhong Linsheng , Zou Yang , Ao Xueyuan , Liu Jiale , Fan Feng , Li Xiaoliang , Dai Xiaoxiao , Yang Qi , Liu Deming
Published: September 2024

A multi-format/rate-adjustable integrated laser communication/ranging system is proposed, achieving adjustable rates between 0.625-10Gbit/s. Real-time experiment shows that at 1e-4 BER the ranging error is only 0.29% of the width of the code element.
Hybrid integration of silicon slot photonics with ferroelectric nematic liquid crystal for poling-free Pockels-effect modulation
Authors: Onural Deniz , Wang Imbert , Chiang Li-Yuan , Raja Shiva , Zhang Xinchang , Singh Manuj , Li Dingning , Dao Howard , Pajk Spencer , Sickler Jason W. , Pecinovsky Cory , Popović Miloš A.
Published: September 2024

Recently discovered ferroelectric nematic liquid crystal promises to enable both strong phase shifters and fast Pockels’ effect modulation without poling. We demonstrate the first silicon slot-waveguide hybrid integration and demonstrate modulation up to 35 GHz.
Generation of ultrashort twisted light pulses with arbitrary polarization using a vortex plate retarder
Authors: Tapani Tlek , Lin Haifeng , De Andres Aitor , Jolly Spencer W. , Bhuvanendran Hinduja , Maccaferri Nicolò
Published: September 2024

We use a vortex retarder approach to generate few optical cycles light pulses carrying orbital angular momentum and arbitrary polarization. The optical vortices’ structure is then reconstructed in the spatio-temporal domain.