bluuebunny/crossref_metadata_2025 huggingface dataset:
Coupling Free Electrons and Cavity Photons in a Transmission Electron Microscope
Authors: Arend Germaine , Feist Armin , Huang Guanhao , Yang Yujia , Henke Jan-Wilke , Raja Arslan Sajid , Kappert F. Jasmin , Wang Rui Ning , Lourenço-Martins Hugo , Qiu Zheru , Liu Junqiu , Kfir Ofer , Kippenberg Tobias J. , Ropers Claus
Published: September 2024

We couple free electrons to the optical modes of a photonic microring resonator. Inelastic electron scattering leads to the generation of cavity photons, correlated to the electrons in time and energy loss.
Synthesis of rapid and highly-linear frequency-stepping optical carriers over 100 GHz bandwidth
Authors: Zhang Jiarong , Li Yihan , Yi Li
Published: September 2024

We demonstrate the generation of frequency-modulated optical signals with up to >100 GHz tuning range and >1 GHz/µs stepping rate based on a recirculating frequency shifting fiber loop.
High-Stable RF Transmission over 64.4 km Metropolitan Area Network
Authors: Zhao Zhuoze , Wang Zhengkang , Gao Hao , Cheng Jiahui , Zhang Jie , Zhao Baodong , Luo Yunlan , Luo Bin , Yu Song
Published: September 2024

The paper describes a high-stable RF transmission in a metropolitan area network over a distance of 64.4 km and demonstrates the experimental verification of the impact of link dispersion configuration on transmission instability.
A Single-Shot Electro-Optic Pulse Shape Acquisition System for OMEGA Laser Applications
Authors: Liu Yihan , Donaldson William , Heimbuegger Matt , Kruschwitz Brian
Published: September 2024

A single-shot, electro-optic data-acquisition system to measure the temporal pulse shape on the OMEGA laser is demonstrated. With multiple, optical-wavelength multiplexing and an electro-optic modulator, this prototype is demonstrated to give constant results, with a high dynamic range and low signal-to-noise ratio.
Role of Band Alignment on the Two-Photon Absorption of Nanocrystal Heterostructures
Authors: Alo Arthur , Reis Luana A. , Barros Leonardo W.T. , Nagamine Gabriel , Lemus Jonathan C. , Planelles Josep , Movilla José L. , Climente Juan I. , Lee Hak June , Bae Wan Ki , Padilha Lazaro A.
Published: September 2024

The influence from different band alignment of nanocrystal heterostructures on their two-photon absorption (2PA) is discussed, showing the possibility to increase the 2PA cross-section by one order of magnitude without significantly changing the emission spectra.
Direct measurement of coherent light proportion from a laser source without spectral filtering
Authors: Yeo Xi Jie , Ernst Eva , Leow Alvin , Hwang Jaesuk , Shen Lijiong , Kurtsiefer Christian , Tan Peng Kian
Published: September 2024

We present a technique to estimate the proportion of coherent emission in the light emitted by a semiconductor laser, by measuring photon correlations between the output ports of an asymmetric Mach-Zehnder interferometer.
Inverse Design of Dual-Band Metasurfaces for Vortex Fiber Lasers
Authors: Bi Shulei , Gui Lili , Wang Chuanshuo , Liao Xianglai , Xu Kun
Published: September 2024

We present a deep learning and genetic algorithm-driven inverse design strategy for dual-band metasurfaces, which can be applied to vortex fiber lasers around the wavelengths of 1030 nm and 1550 nm.
In-situ metrology interferometric set-up for the diagnosis and analysis of coherent beam combining lasers
Authors: Rousseaux T. , Primot J. , Rouzé B. , Chanteloup J-C. , Bellanger C.
Published: September 2024

We present a new compact Pistil interferometer, specifically d esigned for easy integration on all CBC lasers. This demonstrator enables self-referenced and accu-rate measurements of the near-field phase, whatever the set-point applied.
Complexity Imbalance of Nanostructured Antireflective Surfaces
Authors: Srenevas Subhasree , Poutous Menelaos K.
Published: September 2024

Effective-medium computations fail to predict scatter from random antireflective surface structures. We used granulometry and surface structural disorder calculations to establish a relation between surface complexity and the on-set of spectral scatter.
Voltage Tunable Nonlinear Response from Semi-Parabolic Quantum Wells Coupled to Metasurfaces
Authors: Yu Jaeyeon , Lee Jongwon , Addamane Sadhvikas , Jung Hyunseong , Brener Igal , Sarma Raktim
Published: September 2024

We present a new nonlinear polaritonic system comprised of quantum-engineered intersubband transitions in symmetry-broken semi-parabolic quantum wells coupled to metasurfaces. These metasurfaces has potential for applications ranging from voltage-tunable high-harmonic generation to ultrafast beam steering.
SU-8 coated etched fiber Bragg grating sensors: A versatile platform for detection of any biomarker using antibody-antigen chemistry
Authors: S Srivatzen , BS Kavitha , Asokan Sundararajan
Published: September 2024

Biomarker detection is pivotal in various fields, including healthcare, environmental monitoring, and biotechnology. This work introduces a versatile platform for biomarker detection by utilizing SU-8 negative photoresist coated etched Fiber Bragg Grating (eFBG) sensors in conjunction with antibody-antigen chemistry. The unique combination of FBG sensors and SU-8 coating offers several advantages, including enhanced sensitivity, selectivity, and versatility. In this study, we present the design and fabrication of SU-8 coated FBG sensors optimized for biomarker detection. The SU-8 coating not only provides a stable and biocompatible surface for immobilizing antibodies but also improves the sensor's response to specific antigen binding. As a proof of concept, the detection of concentration of standard antigen is demonstrated by functionalization of the SU-8 coated eFBG sensor with corresponding IgG antibody using EDC/NHS crosslinking chemistry. The reflected Bragg wavelength (lB) of the eFBG sensor is modulated by the added antigen concentration. The dynamic range of the sensor is from 8 pg/ml to 80 ng/ml with average sensitivity of 32.3 pm 10- 1 g-1 ml.
Transverse stress sensor based on FMF and silicon photonic integrated circuits
Authors: Zhang Mingyuan , Zhou Wu , Tong Yeyu
Published: September 2024

We proposed a low-cost solution for transverse stress sensing based on few-mode fiber (FMF) and silicon photonic integrated circuits (PICs). The inter-mode crosstalk caused by the transverse stress can be effectively quantified.
Two-photon Lithography assisted Fluorescence sensor for sensitive detection of lead ions in water
Authors: T Archana , Das Rahul Kumar , Rani Sweta , Saxena Sumit , Shukla Shobha
Published: September 2024

We report the fabrication of a miniaturized sensor by femtosecond laser-assisted two-photon lithography for the sensitive detection of Lead in water. Fluorescence turn-off or quenching was achieved at ppb levels.
Excitation of Whispering Gallery Modes In A Microbottle Resonator Using An Optical Beam Carrying Orbital Angular Momentum
Authors: Chejarla Suresh , Veluthandath Aneesh V , Murugan Ganapathy Senthil , Srinivasan Balaji
Published: September 2024

We investigate the excitation of WGM in a microbottle resonator with parabolic resonator profile using an optical beam carrying orbital angular momentum beam through FDTD-based simulations and by evaluating the overlap integral.
Performance Investigation of Dual Stage Nested Loop Configuration for Scalable Coherent Beam Combination
Authors: Sooraj M. S. , Maji Satyajit , Sankar Viswanathan , Linslal C. L. , Venkitesh Deepa , Srinivasan Balaji
Published: September 2024

We investigate the performance of a dual-stage modular array with tip-tilt optimization for coherent beam combination by studying the dependence of efficiency and Strehl’s ration on the fill and tilt factors in the outer module.
An efficient mid-infrared erbium-doped ZBLAN amplifier using a double-pass configuration
Authors: Shi Yihuan , Kang Qi , Wen Qiao , Huang Dongmei , Wai P. K. A.
Published: September 2024

The double-pass configuration of the erbium-doped ZBLAN fiber amplifier is achieved for the first time. The amplification efficiency is ~40% higher than that of the single-pass amplifier, which is significant for compact mid-infrared fiber amplifiers.
Experimental characterization and modeling of sub-nanosecond Fe:ZnSe mid-IR gain-switched laser operating at room temperature
Authors: Ghimire S. , Martyshkin D. , Fedorov V. , Mirov S.
Published: September 2024

We report on the experimental characterization and modeling of sub-nanosecond Fe:ZnSe mid-IR gain-switched laser operating at room temperature. A single-spike oscillation with an output energy of 0.33 mJ was achieved under 4.67 mJ pump energy.
Optically Pumped Quantum Dot Photonic Crystal Surface Emitting Lasers (QD-PCSELs) based on Epitaxial Regrowth
Authors: Seth Subhashree , Reilly Kevin J. , Ince Fatih F. , Kalapala Akhil , Gautam Chhabindra , Rotter Thomas J. , Liu Zhongue , Addamane Sadhvikas , Zhou Weidong , Balakrishnan Ganesh
Published: September 2024

Epitaxial regrowth is used to fabricate QD-PCSELs. Three layers of InAs dots-in-well are used as the active region. Device results from an optically pumped QD-PCSEL with an emission wavelength of 1200 nm is presented.
C-band 12-Channel DFB Laser Array with High Output Power and Narrow Linewidth
Authors: Zhang Yuanhao , Lu Qianru , Liu Can , Xiang Minwen , Li Guojiong , Xia Juan , Lu Qiaoyin , Guo Weihua
Published: September 2024

We demonstrated a high power 12-channel DFB laser array with 200-GHz-spacing, realizing output power over 85 mW, SMSR over 50 dB and Lorentzian linewidth below 350 kHz for each channel.
Quantum Cascade Lasers Powered by a Pulsed 6.78 MHz Wireless Power Transfer System
Authors: Brun Richard , Wang Shukai , Chen Minjie , Wang Xiaojun , Gmachl Claire F.
Published: September 2024

We demonstrate a high-frequency, pulsed, inductive, wireless power transfer system with a full-bridge diode receiver for quantum cascade lasers. It operates at 6.78MHz to create a pulsed 2μs 10V/1.2A output, for room-temperature pulsed laser operation.
Electrical Conduction of Liquid-Exfoliated Nanographite Flakes as Components for Functional Inks
Authors: Loh Harrison A. , Sierros Konstantinos A. , Bristow Alan D.
Published: September 2024

THz-TDS is used to measure AC conductivity of nanographite flakes to relate carrier concentration and scattering time from Drude-Smith with the flake size. The carrier concentration and scattering were observed to change with flake size.
Development of CO2 Laser Pumped Terahertz Sources
Authors: Illés Gergő , Hebling János , Tóth György
Published: September 2024

Thorough investigation using advanced simulations showed that high energy single-cycle terahertz pulses can be generated with currently available CO2 laser technology. Computations predict efficiencies up to 4% and electric fields above 3 MV/cm.
Thermally Robust Silicon-on-Insulator Ring Resonator for Biosensing in the Near-Infrared
Authors: Schweikert Christian , Vogel Wolfgang , Berroth Manfred , Rademacher Georg
Published: September 2024

We present a ring resonator designed in the 220 nm silicon-on-insulator tech-nology that serves as a thermally robust biosensor. Utilizing the negative thermo-optic coefficient of aqueous analytes, the suppression of undesired temperature drifts is demonstrated.
High Speed SOP Tracking Added by an Optical Domain Polarization Demultiplexing Prototype in Short Range Coherent Optical Communication System
Authors: Zhao Wanxin , Shan Linan , Jia Yihan , Wang Chong , Sun Shuning , Zhang Xiaoguang , Xi Lixia
Published: September 2024

We demonstrated a SOP tracking in a 10km coherent optical communication system, added by an optical-domain polarization demultiplexing prototype. The updating time interval of CMA taps is greatly lengthened about 25 times with 600krad/s SOP.
Neural network-based wavefront prediction for atmospheric channels
Authors: Chen Yan , Cai Shanyong , Zhang Zhiguo
Published: September 2024

A wavefront prediction method based on intensity images with neural network is proposed. Result shows that using the predicted wavefront for phase retrieval is more effective than the wavefront correction method without prediction.
A Fast Fiber Channel Modelling Based on Koopman Neural Operator for PDM Signal Transmission
Authors: Fei Jianxiong , Yi Anlin , Huang Junling , Yan Lianshan , He Xingchen , Jiang Lin , Luo Bin , Pan Wei
Published: September 2024

A 1600km PDM optical fiber channel modeling using Koopman Neural Operator is proposed. It provides relatively high efficiency comparable to 160-StPs-SSFM, while especially reducing its time consumption (Running time decreased from 34s to only 0.01s).
Microresonator Frequency Combs Involving Both χ(2) and χ(3) Nonlinearities
Authors: Xue Xiaoxiao , Wu Kaiyi , Weiner Andrew M
Published: September 2024

Many microresonator platforms for frequency comb generation have both ( χ2) and ( χ3) nonlinearities. Here we discuss several comb formation behaviors in this scenario, including second-harmonic assisted four-wave mixing, Kerr soliton regulation and single-cavity comb self-referencing.
Generation of Squeezed Light in Silicon Nitride Photonic Integrated Chips
Authors: Liu Shuai , Hariri Abdulkarim , Wu Bo-Han , Zhang Yuheng , Zhang Zheshen
Published: September 2024

We develop a scalable Si3N4 photonics platform with high-Q microring resonators and efficient couplers to genenerate squeezed light.
Hyperentangled photon pairs emitted from an integrated source delivering more than 1 Gpair/s
Authors: Gianini Linda , Barone Andrea , Bacchi Marcello , Faugier-Tovar Jonathan , Congia Sara , Borghi Massimo , Tagliavacche Noemi , Zatti Luca , Wilmart Quentin , Olivier Ségolène , Liscidini Marco , Galli Matteo , Bajoni Daniele
Published: September 2024

We demonstrate a high-rate source of hyperentangled photons based on a silicon racetrack resonator. Hyperentanglement is verified by violating Bell’s inequality in both time and frequency domains, and obtaining a high-purity state using frequency-bin encoding.
Measurement of an ion’s motional state via qubit spectroscopy in an ion trap with integrated photonics
Authors: Vásquez Alfredo Ricci , Mordini Carmelo , Kienzler Daniel , Home Jonathan P.
Published: September 2024

We present a method to generate spin-motion coupling in trapped ions by using state-dependent optical potentials from a phase-stable standing wave generated using integrated photonics in a surface-electrode trap. We employ this method to directly observe the motional state of an ion using qubit spectroscopy.
Photonic-wire bonded pump reject and tunable wavelength demultiplexer using contra-directional couplers for a silicon micro-ring resonator photon-pair source
Authors: Afifi Abdelrahman E. , Haynes Malcolm , Shekhar Sudip , Chrostowski Lukas , Young Jeff F.
Published: September 2024

A wavelength demultiplexer and pump-reject circuit using three contra-directional couplers is integrated with a silicon micro-ring resonator and connected using photonic wire bonds that achieve a pair-generation rate of 13 kHz and CAR of 320.
Programmable quantum emitter formation in silicon
Authors: Jhuria Kaushalya , Ivanov Vsevolod , Polley Debanjan , Liu Wei , Persaud Arun , Zhiyenbayev Yertay , Redjem Walid , Qarony Wayesh , Parajuli Prabin , Ji Qing , Gonsalves Anthony , Bokor Jeffery , Tan Liang , Kanté Boubacar , Schenkel Thomas
Published: September 2024

Here, we demonstrate local writing and erasing of selected light-emitting defects using fs laser pulses in combination with hydrogen-based defect activation and passivation which also lead to rediscovering a potential Spin-photon qubit.
Optically Active InGaAs Axial Nanowire Heterostructures for Quantum Integrated Photonic Circuits
Authors: Jeong H. W. , Ajay A. , Mukhundhan N. , Döblinger M. , Sturm S. , Ruiz M. Gómez , Zell R. , Schreitmüller T. , Lähnemann J. , Müller-Caspary K. , Finley J. J. , Koblmüller G.
Published: September 2024

We propose a monolithically integrated, vertical-cavity nanowire (NW) quantum light source coupled to a silicon (Si) quantum photonic integrated circuit (QPIC). Starting from modelling of the coupling efficiencies of an embedded quantum emitter and its dependencies on key geometrical parameters of NW/Si-waveguide dimensions, we further show experimental progress towards such a deterministic quantum light source using InGaAs emitters in a GaAs(Sb) NW cavity. Key understanding of the growth and optical properties of the InGaAs emitter is provided from systematic structure-property relationship studies.
Frequency Comb of Spectrally Pure Biphotons Using Time-Varying Cavities
Authors: Gaines Jordan A. , Myilswamy Karthik V. , Lukens Joseph M. , Weiner Andrew M.
Published: September 2024

We propose and analyze the use of linear, time-variant cavities to spectrally compress broadband frequency-correlated photon pairs into combs of spectrally pure biphotons. Our approach relies on rapid switching of input coupling to the cavity.
Spatial quantum beating in a cavity-filtered biphoton frequency comb
Authors: Chen Yujie , Cheng Xiang , Chang Kai-Chi , Sarihan Murat Can , Song Sophi , Chin Hsiao-Hsuan , Wong Chee Wei
Published: September 2024

We examine frequency entanglement via spatial quantum beating in a biphoton frequency comb, for both doubly and singly-filtered cases. The observed HOM revival is the incoherent superposition of SQB from different frequency pairs.
A Long-wavelength Infrared Wide-field Broadband Camera Based on Extra-large Metalens Doublet
Authors: Li Linhan , Chen Yan , Hou Mingming , Liu Sitan , Yi Fei
Published: September 2024

We designed and fabricated an extra-large metalens doublet(EMD). Leveraging on the EMD, we developed a camera for broadband large field of view imaging in the long-wavelength infrared spectrum, and evaluated the performances of the meta-camera.
Broadband Dispersion Engineered Volumetric Metamaterial for Polarization Beam Splitting at Large Deflection Angles
Authors: Li Neuton , Foo Ian , Neshev Dragomir N. , Sukhorukov Andrey A. , Faraon Andrei
Published: September 2024

We propose miniaturizing polarizing beam splitters (PBS) with metamaterials. We use an inverse design approach that can optimize for the entire device compatible with 3D lithography. The devices operate with broadband beam deflection up to 45° and minimal dispersion in the mid wave infrared range of 4.3 µm to 4.7 µm.
Photonic Weyl Points on Non-Orientable Brillouin Zones
Authors: Vaidya Sachin , Fonseca André Grossi , Christensen Thomas , Rechtsman Mikael C. , Hughes Taylor L. , Soljačić Marin
Published: September 2024

Weyl points are topological degeneracies that occur in the momentum space of three-dimensional lattices. Using a photonic system, we explore the fate of Weyl-point topology when the underlying manifold (i.e., the Brillouin zone) is non-orientable.
Topological Photonic Cavities on the III-N Platform for the Second Harmonic Generation in the UV-visible Spectrum
Authors: Li Tao , Xu Rui , Mei Zhaobo , Zhou Jingan , Xu Mingfei , Luo Shisong , Chang Cheng , He Ziyi , Zhu Hanyu , Zhao Yuji
Published: September 2024

1D topological photonic cavities supporting a single resonance around the wavelength of 800 nm were fabricated from a gallium nitride on silicon wafer for highly polarized second harmonic generation around the wavelength of 400 nm.
Topological Protection of Bell States in a Two-Dimensional Quantum Walk
Authors: Nemirovsky-Levy Liat , Lyubarov Mark , Plotnik Yonatan , Segal Ohad , Segev Mordechai
Published: September 2024

We present a method to protect the entanglement of a Bell-state encoded on a single photon performing a two-dimensional discrete-time quantum walk. We find an edge-state at the boundary of two distinct quantum walk domains.
A Compact Photonic Architecture for General Linear Transformations
Authors: Markowitz Matthew , Zelaya Kevin , Miri Mohammad-Ali
Published: September 2024

This letter introduces a photonic architecture that enables the realization of arbitrary complex-valued matrices. This is achieved by interlacing amplitude-and-phase diagonal matrices combined with unitary DFrFT matrices. Numerical convergence and resilience to defects are discussed.
Creating edge states within a synthetic dimension of orbital angular momentum
Authors: Liao Yu-Wei , Yang Mu , Xu Jin-Shi , Li Chuan-Feng , Guo Guang-Can
Published: September 2024

We establish a sharp boundary within an SSH lattice of orbital angular momentum. The band structures with edge states are measured directly. Furthermore, various other boundary effects are observed.
Optimization of Depolarization Compensation by a Spatially Variable Wave Plate in a High Power and High Energy End Pumped Yb:YAG Amplifier System
Authors: Kazakevičius A. , Danilevičius R. , Michailovas A.
Published: September 2024

We present experimental data and theoretical simulation of depolarization compensation by a spatially variable wave plate in high average power end-pumped Yb:YAG amplifiers and analyze thermally induced output beam distortions and depolarization losses.
The Role of Plasmas in Self-organized Micro/nanoscale Structure Formation in Femtosecond Laser Surface Processing
Authors: Reicks Andrew , Zuhlke Craig
Published: September 2024

Spectroscopic techniques are used to study the plasma generated during femtosecond laser surface processing as a function of fluence to better understand the effect of laser plasmas on resulting surface morphology.
Nanosecond wavelength measurements with a silicon photonic wavemeter
Authors: Stern Brian , Farah Bob , Kim Kwangwoong , Borkowski Robert , Vijayan Kovendhan , Bitauld David
Published: September 2024

We demonstrate a silicon photonic wavemeter with nanosecond-scale measurement speed. We show tracking of the frequency excursions of a laser during bursts and steps, with wavemeter response times of 3 ns.
Non-volatile Reconfigurable Digital Optical Diffractive Neural Network Based on Phase Change Material
Authors: Hu Qiaomu , Wu Chu , Zhao Jingyu , Zeng Rui , Zheng Shuang , Zhang Minming
Published: September 2024

We propose a non-volatile reconfigurable digital all-optical diffractive neural network based on Sb2Se3 phase-change material. With three optical diffraction layers and a correcting layer, our model achieves 94.46% accuracy for handwritten digit recognition.
Experimental Verification of Non-Volatile and Reversible Phase Shift in Silicon Nitride Waveguide
Authors: Maegami Yuriko , Cong Guangwei , Kou Rai , Yamamoto Noritsugu , Narushima Toshihiro , Tsuchizawa Tai , Kawashima Hitoshi , Yamada Koji
Published: September 2024

We demonstrate a reversible and non-volatile optical phase shift in a silicon-nitride waveguide by a process of thermal annealing and ultraviolet irradiation, and investigate a correlation between phase shifts and charge state of dangling bonds.
Brillouin dynamic gratings in silicon nitride waveguides
Authors: Botter Roel , van den Hoogen Jasper , Mishra Akhileshwar , Ye Kaixuan , van Rees Albert , Hoekman Marcel , Boller Klaus , Marpaung David
Published: September 2024

We demonstrate the first observation of a Brillouin dynamic grating signal in the double-stripe silicon nitride waveguides.
Spectrometer based on Brillouin lasing and spectral compression
Authors: Murrray Joseph B. , Murray Matthew J. , Redding Brandon
Published: September 2024

We introduce a spectrometer that uses Brillouin lasing to perform scan-free measurements of a 4 THz optical band (1535-1570 nm) with 28 MHz (0.2 pm) resolution and an update rate of 5 ms.
Polarization-Based Contrast Enhancement during Spectral Broadening in a Multi-Pass Cell
Authors: Escoto Esmerando , Pressacco Federico , Hartl Ingmar , Heyl Christoph M. , Seidel Marcus , Tünnermann Henrik
Published: September 2024

We optimize the combination of nonlinear polarization ellipse rotation and post-compression in a multi-pass cell, to minimize temporal contrast degradation at large compression factors even in close temporal proximity to the compressed pulse.
Dual-comb Fiber Laser-based Practical Mid-infrared Dual-comb Spectroscopy via Real-time and Long-term Coherent Averaging
Authors: Asahara Akifumi , Fukawa Gakuto , Shimizu Takayuki , Kato Takashi , Minoshima Kaoru
Published: September 2024

We demonstrate practical mid-infrared dual-comb spectroscopy based on a bidirectional dual-comb fiber laser. By implementing real-time and long-term coherent averaging, greenhouse gas spectroscopy with absolute wavelength around 3.9 μm is achieved without complex tight-locking system.
Wavelength and Supermode Conversion based on Four-Wave Mixing in Coupled Multicore Fibres
Authors: Ji Kunhao , Abdul Khudus Muhammad I. M. , Davidson Ian , Xu Lin , Guasoni Massimiliano
Published: September 2024

We investigate the four-wave mixing between supermodes in coupled multicore fibres. First-time experimental observation of selective supermode and wavelength conversion based on four-wave mixing is reported by controlling pump modes in a dual core fibre.
Broadband and Tunable Frequency Conversion using Intermodal Bragg Scattering
Authors: Ulvenberg Thjalfe , Bolotov Denis , Rishøj Lars Søgaard , Galili Michael , Rottwitt Karsten
Published: September 2024

We demonstrate frequency conversion between waves spanning over 600 nm using intermodal Bragg scattering driven by two high-power pumps separated by up to 49 nm while achieving above -10 dB conversion efficiency.
Tunable Optical Properties and Recombination Dynamics of Ge1-x-ySiySnx Nanoalloys
Authors: Pate David S. , Onukwughara Chineme Jeanfrances , Spence Griffin C. , Arachchige Indika U. , Özgür Ümit
Published: September 2024

We report on quantum confined Ge1-x-ySiySnx nanocrystals demonstrating both size- and composition-tunable direct visible/NIR emission (1.77 – 2.47 eV) and recombination dynamics. Temperature-dependent time-resolved photoluminescence suggests significant enhancement of oscillator strengths with Si incorporation.
Trion Species Splitting and Intensity Enhancement with Lateral Electrical Field in Two-dimensional MoTe2
Authors: Wang Zhen , Sun Hao , Xu Jialu , Zhang Huan , Ning Cun-Zheng
Published: September 2024

Positive and negative trions generated simultaneously in two-dimensional MoTe2 through optical pumping were spatially separated under a lateral electrical field. More than four times enhancement of the corresponding charge density without injection was demonstrated experimentally.
Development of a High-Doppler Shift Femtosecond Optical Time Transfer Testbed
Authors: Bigelow Matthew S. , Martin Kyle W. , Elgin John , Frey Kimberly A.
Published: September 2024

We have developed a two-way optical time transfer testbed potentially capable of simulating relative motion greater than 1 km/s in the lab using multiple optical frequency combs and no moving components.
Low Noise Self-Oscillating Filtered Electro-Optic Modulated Comb Generation
Authors: Trask Lawrence Robert , Pericherla Srinivas Varma , Delfyett Peter J.
Published: September 2024

We demonstrate an alternative architecture for generating low-noise, terahertz spanning, optically filtered electro-optic modulated combs without an external RF drive signal. Results demonstrate a 70 dB OSNR and RF SNR > 90 dB at 10.5 GHz.
Amplitude-Modulated and Frequency-Modulated Comb States in Quantum-Dot Laser
Authors: Dong Bozhang , Chow Weng W. , Dumont Mario , Grillot Frédéric , Bowers John E.
Published: September 2024

This paper reports on an investigation of the frequency-modulated comb operation in a quantum-dot laser. Both the amplitude-modulated and the frequency-modulated combs can be generated independently from the same device through bias and the engineering of the optical nonlinearities.
Self-Hybridized Quasi-Bound State in the Continuum in Perovskite Metasurfaces
Authors: Kala Abhinav , Fang Jie , Johnson Rose , Chen Rui , Chang Cheng , Munley Christopher , Sharp David , Lin Lih Y. , Majumdar Arka
Published: September 2024

Self-hybridized exciton-polaritons in solid-state systems are interesting as they overcome the limitations of hybrid integration. Here, we present the design and experimental demonstration of self-hybridized quasi-bound state in continuum polaritons in a FAPbBr3 perovskite metasurface.
Electron Dynamics of Femtosecond Laser Induced Plasma Inside Multilayer Dielectric High Reflectors Studied Using Particle-in-Cell (PIC) Approach
Authors: Su Ziyao , Smith Joseph R. , Chowdhury Enam
Published: September 2024

The strong field ionized electron motion and energy in the interaction of few-cycle femtosecond laser and SiO2/HfO2-based multilayer dielectric reflector designed for 800nm is studied using the PIC method incorporated with the Keldysh photoionization theory.
Soliton crystals in 4H-silicon carbide-on-insulator-based integrated optical microring resonator
Authors: Afridi Adnan Ali , Lu Yaoqin , Shi Xiaodong , Wang Ruixuan , Li Jingwei , Li Qing , Ou Haiyan
Published: September 2024

We experimentally demonstrated the deterministic access of soliton crystals in a 4H-silicon carbide microring resonator. The soliton crystals with various line spacings of 6, and 10 times the free spectral range are generated within the same microring resonator but under different pump wavelengths.
300-km Full C-band EDFA-only Unrepeated Transmission
Authors: Swain Smaranika , Schou Christian Koefoed , Yankov Metodi P. , Galili Michael , Oxenløwe Leif Katsuo
Published: September 2024

We investigate unrepeated transmission with EDFA-only amplification and demonstrate an order of magnitude improvement in energy per bit compared to an EDFA-Raman hybrid scheme using 32-Gbaud probabilistically-constellation-shaped PDM-16QAM WDM data in a fully loaded C-band.
Photonic-Chip-Based Ultralow-Noise Microwave Generation
Authors: Zhao Yun , Jang Jae K. , Beals Garrett , McNulty Karl J. , Okawachi Yoshitomo , Lipson Michal , Gaeta Alexander L.
Published: September 2024

We demonstrate the generation of a 16-GHz microwave signal via optical frequency division of an optical-parametric oscillator by Kerr-soliton comb, which is optically synchronized. The resulting noise levels represent the lowest phase noise achieved in a chip-based device.
Spacing Tunable Frequency Comb with a Maintained Spectral Shape
Authors: Cai Yijia , Liu Zhixin
Published: September 2024

We study the spacing tunability of an EO-comb-seeded parametric frequency comb generator with 90 nm bandwidth and 8-dB spectral flatness, demonstrating space tuning over 25 and 32 GHz with a maintained spectral profile.
Phase noise in free-running dual-comb spectroscopy [invited]
Authors: Sterczewski Lukasz A. , Tian Haochen
Published: September 2024

Dual-comb spectroscopy is becoming a pillar of precise optical measurements. Here we study the impact of the laser source timing jitter and carrier-envelope fluctuations on the shape of molecular absorption lines probed using this technique.
TiO2:GeO2 and SiO2 Coating with Low Thermal Noise for Gravitational Wave Detectors
Authors: Davenport Aaron , Vajente Gabriele , Demos Nicholas , Billingsley GariLynn , Markosyan Ashot , Bassiri Riccardo , Fejer Martin M. , Gras Slawek , Evans Matthew , Fristchel Peter , Menoni Carmen S.
Published: September 2024

TiO2:GeO2 alloy and SiO2 thin film high reflector stacks with low coating thermal noise and excellent optical properties are demonstrated. The effect of design and annealing of the coatings is studied.
Delivery of Spatiotemporal Ultrafast Pulses through Multimode Optical Fibers
Authors: Cruz-Delgado Daniel , Antonio-Lopez J. Enrique , Perez-Leija Armando , Fontaine Nicolas K. , Eikenberry Stephen S. , Christodoulides Demetrios N. , Bandres Miguel A. , Amezcua-Correa Rodrigo
Published: September 2024

We demonstrate how to overcome the detrimental effects caused by chromatic and modal dispersion in multimode optical fibers using tailored spatiotemporal ultrashort light pulses. Our results will enable advancements in a broad range of applications.
Broadband Light Beam Steering by Optical Phased Array Based on Phase-controlled Optical Frequency Comb
Authors: Kato Takashi , Minoshima Kaoru
Published: September 2024

The proposed method employs a broadband optical phased array with a phase-controlled optical frequency comb for scanning optical dots. Precise control of the frequency parameters of the comb eliminates the need for optical setup calibration.
Six DoF Large-scale Dimensional Metrology Using Multilateral Dual-comb Ranging
Authors: Jiang Ruilin , Wu Guanhao
Published: September 2024

We developed a multilateral metrology system employing dual-comb absolute distance metrology. Using self-calibration method facilitated by the mutual-collimating method, within a 10ms averaging, it achieved micron-level precision for position and ten microradians-level precision for orientation.
Efficient Grating Coupling for Silicon Nitride Photonics
Authors: Kohli Manuel , Chelladurai Daniel , Vukovic Boris , Moor David , Bisang Dominik , Keller Killian , Messner Andreas , Buriakova Tatiana , Zervas Michael , Fedoryshyn Yuriy , Koch Ueli , Leuthold Juerg
Published: September 2024

Efficient fiber-to-chip coupling is demonstrated for SiN photonics with simple and fabrication-tolerant amorphous silicon overlay gratings. This elegant approach offers coupling loss of only 0.43 dB and 1.11 dB with and without back-reflector, respectively.
High-power MUTC Photodiode with WR-8 Rectangular Waveguide Output
Authors: Tian Yuxin , Xiong Bing , Sun Changzheng , Hao Zhibiao , Wang Jian , Wang Lai , Han Yanjun , Li Hongtao , Gan Lin , Luo Yi
Published: September 2024

We present a compact modified uni-travelling-carrier (MUTC) photodiode module with WR-8 rectangular waveguide output. The packaged device exhibits a flat optoelectronic frequency response with a peak RF output power of −0.97 dBm (800 μW).
Dark-Pulse Kerr Comb Enabled Ultrafast Terahertz Wireless Communication
Authors: Zheng Yi , Kong Deming , Jia Shi , Zhou Liping , Wang Chengli , Yi Ailun , Galili Michael , Morioka Toshio , Yvind Kresten , Ou Xin , Oxenløwe Leif Katsuo , Pu Minhao
Published: September 2024

We demonstrate the first dark-pulse Kerr comb in the SiCOI platform and its application for terahertz wireless communication with 100.78 Gbit/s net rate per spatial channel over a 10-meter free space distance.
Superior AlGaN-Based Deep Ultraviolet Light- Emitting Diodes Incorporated with a Tunnel Junction Located on the N-Side of the Device
Authors: Wang Rui , Yu Huabin , Memon Muhammad Hunain , Chen Wei , Sun Haiding
Published: September 2024

We propose an AlGaN-based DUV LED incorporated with a n-side located tunnel junction to reverse the carrier injection direction, which can improve the light output power and internal quantum efficiency while reducing the efficiency droop.
InAs nonlinear metalens for focused terahertz pulse generation
Authors: Jung Hyunseung , Adamame Sadhvikas J. , Luk Ting Shan , Harris C. Thomas , Subramania Ganapathi , Brener Igal , Mitrofanov Oleg
Published: September 2024

We demonstrate an InAs-based terahertz (THz) metasurface emitter that can generate and focus THz pulses using a binary-phase Fresnel zone plate concept. The metalens emitter successfully generates a focused THz beam without additional THz optics.
Toward an Optically Pumped Magnetometer Magnetoencephalography System with Full Head Coverage
Authors: Schwindt Peter D. D. , Iivanainen Joonas , Carter Tony R. , Dhombridge Jonathan E. , Read Timothy S. , Little Bethany J. , Ridley David M. , McKay Jim , Stephen Julia , Taulu S. , Borna A.
Published: September 2024

We are developing optically pumped magnetometers (OPMs) to perform magnetoencephalography (MEG) with human subjects. Our custom-built four-channel sensors will be installed within a magnetically shielded room to form a 108-channel full-head array.
Tunable 778 nm Integrated Brillouin Laser Probe for a Rubidium Two-Photon Optical Atomic Clock
Authors: Isichenko Andrei , Kortyna Andrew , Chauhan Nitesh , Wang Jiawei , Harrington Mark W. , Olson Judith , Blumenthal Daniel J.
Published: September 2024

We demonstrate a frequency-controllable 778 nm integrated Brillouin laser with 40 Hz fundamental and 5 kHz integral linewidths maintained over >10 kHz modulation. Stabilization to a rubidium two-photon transition results in stability 2e-13 at 100s.
Heteroepitaxial IV-VI semiconductor mid-infrared light-emitting diodes and detectors
Authors: Nordin Leland , Meyer Jarod , Mukherjee Kunal
Published: September 2024

N-type IV-VI films are grown on p-type III-V substrates. Despite a threading dislocation density exceeding 1 × 109 cm
−
2, we observe mid-infrared electroluminescence and photoresponse at room temperature. These results underscore the promise of IV-VI/III-V heteroepitaxial devices.
Hertz-Level Linewidth Brillouin Fiber Laser Using Doubly Resonant Cavities
Authors: Lampen Jacob , Li Peng , Jiang Jie , Rolland Antoine , Fermann Martin E.
Published: September 2024

We demonstrate an ultra-high Q doubly resonant cavity Brillouin fiber laser producing a stable low-noise Brillouin output with a linewidth of ~ 2.4 Hz and a stability of < 2×10-14 at 20 ms.
A Flexible Beamline for Ultrafast High-Throughput Microscopy with Extreme Ultraviolet Radiation
Authors: Grova Carmelo , Bevis Charles S. , Giani Nicola , Adams Daniel E. , Svetina Cristian , Mancini Giulia F.
Published: September 2024

We report the design of a compact beamline for Time-Resolved Ptychography driven by a 13nm and 30nm High-Harmonic Generation source. The microscope is capable of quantitative, ultrafast, full-field microscopy supporting near-wavelength spatial and sub-50fs temporal resolutions.
Novel 3D-Rectification Mechanism of Terahertz Detection in Epitaxial Graphene Channel Transistors
Authors: Tamura Koichi , Seki Hironobu , Kudo Hiroyoshi , Uchigasaki Shinnosuke , Tang Chao , Fukidome Hirokazu , Takida Yuma , Minamide Hiroaki , Satou Akira , Otsuji Taiichi
Published: September 2024

We developed terahertz (THz) detectors based on a high-quality epitaxial graphene-channel transistor. The bias dependencies of the responsivity indicate the primary contributions of plasmonic and photothermoelectric rectification mechanisms and suggest a distinctive signature of the third rectification mechanism called the 3D-rectification.
Multi-Octave THz Generation and Detection at MHz Repetition Rates using the Organic Nonlinear Crystal PNPA
Authors: Sterczewski Lukasz A. , Mnich Jakub , Sotor Jaroslaw
Published: September 2024

Generation and detection of broadband THz radiation using the PNPA ((E)-4-((4-nitrobenzylidene)amino)-N-phenyl-aniline) crystal at MHz repetition rates is demonstrated. Compatibility with nanojoule pump pulses at telecommunication wavelengths makes this medium attractive for compact THz spectrometers.
Multi-Color Solitons in Coupled-Ring Microresonators
Authors: Gao Maodong , Ge Jinhao , Yuan Zhiquan , Yu Yan , Guo Joel , Jin Warren , Liu Jin-Yu , Ji Qing-Xin , Feshali Avi , Paniccia Mario , Bowers John , Vahala Kerry
Published: September 2024

Multi-color co-propagating and counter-propagating solitons are generated using a coupled-ring microresonator in the ultra-low-loss Si3N4 platform. Soliton spectra and beatnotes are measured and potential applications are discussed.
Overcoming Thermal Effects with Kerr Soliton Combs in Compact Photonic Structures
Authors: Beals Garrett , Zhao Yun , McNulty Karl , Dacha Sai Kanth , Lipson Michal , Gaeta Alexander L.
Published: September 2024

We demonstrate strong thermal effects in the soliton state in a 16-GHz free-spectral range compact spiral microresonator by measuring a thermal-induced bistability and show ultralow-noise operation can be achieved via operation at the quiet point.
Solid-State Self-Steepening Enhanced Flat White Light
Authors: Fang Shaobo , Liu Yuzhe , Chen Zhidong , Yang Senchi
Published: September 2024

We generated intense near-two-octave spanning supercontinuum by self-steepening enhanced cascade process in solids. The output spectrum covered from 510 nm to 1450 nm with an ultra-flat-plateau, which supporting 0.8-cycle 2.7-fs TL pulse.
Highly Stable and Gapless sub-5-fs Pulses Close to the Bandwidth Limit from a Compact Er:fiber Laser System
Authors: Sterk Philipp , Hutter Sarah R. , Leitenstorfer Alfred
Published: September 2024

A smooth and octave-spanning spectrum derived from Er:fiber technology is compressed to 4.92 fs. Intensity fluctuations across the entire supercontinuum are below 1.5% and quantum-limited in the center.
Graphene/silicon heterojunction enabling reconfigurable phase-relevant optical activation function
Authors: Zhong Chuyu , Liao Kun , Wei Maoliang , Ma Hui , Hu Xiaoyong , Lin Hongtao
Published: September 2024

Dual-functional graphene/silicon heterojunctions in microring resonators enabled highly reconfigurable optical activation function devices with phase activation. Special nonlinear functions are fed into a complex-valued ONN to challenge image recognition tasks, showing improved results.
L-band tunable mode-locked fiber laser achieving up to 19 kHz wavelength sweeping rate
Authors: Ye Guanyu , Chow Kin Kee , Liu Bowen , Ma Yifan , Dai Maolin , Shirahata Takuma , Yamashita Shinji , Set Sze Yun
Published: September 2024

For the first time, we introduce a rapid wavelength-swept L-band tunable mode-locked fiber laser, boasting an exceptional wavelength sweeping rate of up to 19 kHz, enabled by external modulation of the pump current.
Prototyped and Upgraded Programmable On-chip Photonic Joint Transform Correlator-Based CNN
Authors: Yang Hangbo , Peserico Nicola , Li Shurui , Motlagh Benyamin Fallahi , Virdi Jaskirat Singh , Gupta Puneet , Sorger Volker J. , Wong Chee Wei
Published: September 2024

We manufacture and optimize a prototyped programmable on-chip photonic joint transform correlator-based convolution neural network. We also illustrate the upgraded potential of the system.
Type-II second-order nonlinear processes in silicon carbide nanophotonic waveguides
Authors: Shi Xiaodong , Lu Yaoqin , Wang Sihao , Dhyani Veerendra , Mohanraj Sakthi Sanjeev , Leong Victor , Zhang Jingjing , Ou Haiyan , Zhu Di
Published: September 2024

Silicon carbide (SiC) is a promising material for integrated nonlinear and quantum photonics. We experimentally demonstrate type-II phase-matched second-harmonic generation and sum-frequency generation in 4H-SiC-on-insulator (SiCOI) nanophotonic waveguides.
Continuous-wave terahertz difference-frequency generation from intersubband polaritonic metasurface
Authors: Krakofsky Jonas H. , Stich Simon , Böhm Gerhard , Belkin Mikhail A.
Published: September 2024

Metasurface with giant nonlinear response (χ(2) > 105pm/V) for terahertz difference-frequency generation is experimentally realized. Terahertz generation using commercial continuous-wave lasers is demonstrated with infrared-to-terahertz conversion efficiency exceeding that of photomixers in the 2.5-5 THz range.
Quantitative Pulse Characterization of Octave Spanning Pulses in the MIR
Authors: Ritzkowsky Felix , Scheiba Fabian , Kubullek Maximilian , Cankaya Huseyin , Rossi Giulio M. , Kärtner Franz X.
Published: September 2024

We report on the pulse characterization of octave spanning pulses in the mid-infrared. By adapting two-dimensional shearing interferometry, we achieve precise quantitative measurements of octave spanning pulses.
Metasurfaces That Enable Bottle-Beam Arrays for Neutral Atom Trapping
Authors: Fang Chengyu , Kim Minjeong , Czaplewski David A. , Mei Hongyan , Deshpande Sanket , Yu Zhaoning , Xiao Yuzhe , Yang Xuting , Dibos Alan M. , Saffman Mark , Choy Jennifer T. , Kats Mikhail A.
Published: September 2024

We report optical metasurfaces that enable bottle-beam arrays for blue-detuned trapping of neutral atoms. Our approach only requires a single metasurface which significantly reduces the complexity of the trapping experiments.
Design and Applications of Low-Coherence Semiconductor Light Emitters
Authors: Ooi Boon S. , Alkhazragi Omar , Lu Hang
Published: September 2024

Despite its numerous advantages, high coherence degrades the performance of many applications due to unintentional interference effects. We review the recent advances in low-coherence semiconductor light emitters and how they can revolutionize those applications.
Dual-wavelength DFB Laser Based on Four Phase-shifted Sampled Moiré Grating for MMW Generation
Authors: Fan Yizhe , Yuan Bocheng , Al-Rubaiee Mohanad , Marsh John , Hou Lianping
Published: September 2024

A dual-wavelength DFB laser is demonstrated utilizing 4-phase-shifted sampled Moiré gratings, which maintains stable operation across an 80 mA current span. It produces a high-quality 39.4 GHz RF signal with an approximate 5 MHz linewidth.
Frequency-Modulated Optical Parametric Oscillator in Thin Film Lithium Niobate
Authors: Stokowski Hubert S. , Dean Devin J. , Hwang Alexander Y. , Park Taewon , Celik Oguz Tolga , McKenna Timothy P. , Jankowski Marc , Langrock Carsten , Ansari Vahid , Fejer Martin M. , Safavi-Naeini Amir H.
Published: September 2024

We present a theory and realization of an integrated frequency-modulated optical parametric oscillator. We generate 200 comb lines using second-order nonlinearity and electro-optic effect in thin film lithium niobate with low optical and RF power.
Fiber Optic Reservoir Computer Using Distributed Feedback
Authors: Cox Nicholas , Murray Joseph , Hart Joseph , Redding Brandon
Published: September 2024

We demonstrate a photonic reservoir computer (RC) using Rayleigh backscattering in single mode optical fiber to perform passive random convolutions. The RC examines select variables of a multidimensional chaotic system and cross-predicts missing elements.
Analytic Expressions for Mode Effective Indices in Step-Index Fibers Near and Beyond Cutoff
Authors: Antikainen Aku , Boyd Robert W.
Published: September 2024

We derive a formula to determine approximate modal effective indices in step-index fibers near and beyond mode cutoff. This allows for mode behavior trends to be determined analytically and can speed up effective index computations.
Ultraviolet to Mid-Infrared Supercontinuum Generation in Dispersion-Engineered Nanophotonic Waveguide
Authors: Hamrouni M. , Jankowski M. , Hwang A. , Flemens N. , Mishra J. , Langrock C. , Safavi-Naieni A. H. , Fejer M. M. , Südmeyer Thomas
Published: September 2024

We demonstrate ultraviolet-to-mid-infrared supercontinuum generation driven inside thin-film lithium niobate on sapphire nanowaveguides. With only 40 pJ from pump pulses centered around 2100 nm, we record a broad spectrum spanning from 380 to 2700 nm.
On-chip mid-infrared supercontinuum generation with dispersive wave designed for gas spectroscopy
Authors: Park Soobong , Lee Seong Cheol , Suk Daewon , Cho Won Bae , Choi Duk-Yong , Ko Kwang-Hoon , Rotermund Fabian , Lee Hansuek
Published: September 2024

We demonstrate on-chip supercontinuum generation with tailored dispersive waves up to 4600 nm in wavelength. We used the dispersive waves to perform gas spectroscopy on the 12CO2 and 13CO2 gases and determine their pressures.
Barium Titanate Racetrack Modulator on Silicon Nitride for 200 GBd Data Communication in the O-band
Authors: Kohli Manuel , Chelladurai Daniel , Kulmer Laurenz , Messner Andreas , Keller Killian , Blatter Tobias , Winiger Joel , Moor David , Buriakova Tatiana , Zervas Michael , Convertino Clarissa , Eltes Felix , Fedoryshyn Yuriy , Koch Ueli , Leuthold Juerg
Published: September 2024

We demonstrate the first O-band BaTiO3-plasmonic modulator on SiN. Featuring symbol rates of up to 200 GBd, 2 dB on-chip loss, and 70 GHz bandwidth, this approach proves suitable for low-loss, high-speed, and low-complexity communication.