当前期刊: Photonics Research Go to current issue    加入关注   
显示样式:        排序: IF: - GO 导出
我的关注
我的收藏
您暂时未登录!
登录
  • Research progress in large-area perovskite solar cells
    Photonics Res. (IF 6.099) Pub Date : 2020-07-01
    Yang Zhao, Fei Ma, Feng Gao, Zhigang Yin, Xingwang Zhang, and Jingbi You

    The record power conversion efficiency of small-area perovskite solar cells has impressively exceeded 25%. For commercial application, a large-area device is the necessary next step. Recently, significant progress has been achieved in fabricating efficient large-area perovskite solar cells. In this review, we will summarize recent achievements in large-area perovskite solar cells including the deposition

    更新日期:2020-07-02
  • Phase demodulation method based on a dual-identical-chirped-pulse and weak fiber Bragg gratings for quasi-distributed acoustic sensing
    Photonics Res. (IF 6.099) Pub Date : 2020-06-04
    Guanhua Liang, Junfeng Jiang, Kun Liu, Shuang Wang, Tianhua Xu, Wenjie Chen, Zhe Ma, Zhenyang Ding, Xuezhi Zhang, Yongning Zhang, and Tiegen Liu

    A phase demodulation method for quasi-distributed acoustic sensing (DAS) systems based on a dual-identical-chirped-pulse and weak fiber Bragg gratings (WFBGs) is proposed. Compared to the use of Rayleigh backscattering light in optical fibers, the implementation of WFBGs can contribute to obtaining an optical signal with a higher signal-to-noise ratio (SNR). The dual-identical-chirped-pulse is generated

    更新日期:2020-07-02
  • High-sensitivity, high-spatial-resolution distributed strain sensing based on a poly(methyl methacrylate) chirped fiber Bragg grating
    Photonics Res. (IF 6.099) Pub Date : 2020-06-05
    Chengang Lyu, Ziqi Liu, Ziqiang Huo, Chunfeng Ge, Xin Cheng, and Haw-Yaw Tam

    In this study, a high-sensitivity, high-spatial-resolution distributed strain-sensing approach based on a poly(methyl methacrylate) chirped fiber Bragg grating (CFBG) is proposed and experimentally demonstrated. Linearly chirped FBGs in a polymer optical fiber provide an alternative to the silica fiber owing to the lower Young’s modulus, which can yield a higher stress sensitivity under the same external

    更新日期:2020-07-02
  • Mode-division multiplexed transmission of wavelength-division multiplexing signals over a 100-km single-span orbital angular momentum fiber
    Photonics Res. (IF 6.099) Pub Date : 2020-07-01
    Junwei Zhang, Junyi Liu, Lei Shen, Lei Zhang, Jie Luo, Jie Liu, and Siyuan Yu

    We experimentally demonstrate mode-division multiplexed (MDM) transmission using eight orbital angular momentum (OAM) modes over a single span of 100-km low-attenuation and low-crosstalk ring-core fiber (RCF). Each OAM mode channel carries 10 wavelength-division multiplexing (WDM) signal channels in the C band, with each WDM channel in turn transmitting 16-GBaud quadrature phase-shift keying signal

    更新日期:2020-07-02
  • Computational 4D imaging of light-in-flight with relativistic effects
    Photonics Res. (IF 6.099) Pub Date : 2020-06-03
    Yue Zheng, Ming-Jie Sun, Zhi-Guang Wang, and Daniele Faccio

    Light-in-flight imaging enables the visualization and characterization of light propagation, which provides essential information for the study of the fundamental phenomena of light. A camera images an object by sensing the light emitted or reflected from it, and interestingly, when a light pulse itself is to be imaged, the relativistic effects, caused by the fact that the distance a pulse travels

    更新日期:2020-07-02
  • Great enhancement of image details with high fidelity in a scintillator imager using an optical coding method
    Photonics Res. (IF 6.099) Pub Date : 2020-06-03
    Huijuan Xia, Yanqing Wu, Lei Zhang, Yuanhe Sun, Zhongyang Wang, and Renzhong Tai

    High-resolution lens-coupled indirect X-ray scintillator imagers are required by many imaging applications. However, the severe weakening of image details prevents its further performance improvement. Through our research, this image degradation is attributed to the broadband loss of the high-spatial-frequency information caused by the high refractive index. A technique known as high-spatial-frequency

    更新日期:2020-07-02
  • Portable quantitative phase microscope for material metrology and biological imaging
    Photonics Res. (IF 6.099) Pub Date : 2020-07-01
    Mengxuan Niu, Gang Luo, Xin Shu, Fuyang Qu, Shuang Zhou, Yi-Ping Ho, Ni Zhao, and Renjie Zhou

    Quantitative phase microscopy (QPM) has emerged as an important tool for material metrology and biological imaging. For broader adoption in those applications, we have proposed and demonstrated a new portable off-axis QPM method, which works in both transmission and reflection modes to meet different sample measurement requirements. The temporal and spatial sensitivities of our system, as quantified

    更新日期:2020-07-02
  • Widely tunable ultra-narrow-linewidth dissipative soliton generation at the telecom band
    Photonics Res. (IF 6.099) Pub Date : 2020-06-04
    Chang Kyun Ha, Ki Sang Lee, Dohyeon Kwon, and Myeong Soo Kang

    Ultra-narrow-linewidth mode-locked lasers with wide wavelength tunability can be versatile light sources for a variety of newly emergent applications. However, it is very challenging to achieve the stable mode locking of substantially long, anomalously dispersive fiber laser cavities employing a narrowband spectral filter at the telecom band. Here, we show that a nearly dispersion-insensitive dissipative

    更新日期:2020-07-02
  • Ultralow-quantum-defect Raman laser based on the boson peak in phosphosilicate fiber
    Photonics Res. (IF 6.099) Pub Date : 2020-06-16
    Yang Zhang, Jiangming Xu, Jun Ye, Jiaxin Song, Tianfu Yao, and Pu Zhou

    Quantum defects (QDs) have always been a key factor of the thermal effect in high-power fiber lasers. Much research on low-QD fiber lasers has been reported in the past decades, but most of it is based on active fibers. Besides, Raman fiber lasers based on the stimulated Raman scattering effect in passive fiber are also becoming an important kind of high-power fiber laser for their unique advantages

    更新日期:2020-07-02
  • Real-time observation of vortex mode switching in a narrow-linewidth mode-locked fiber laser
    Photonics Res. (IF 6.099) Pub Date : 2020-07-01
    Jiafeng Lu, Fan Shi, Linghao Meng, Longkun Zhang, Linping Teng, Zhengqian Luo, Peiguang Yan, Fufei Pang, and Xianglong Zeng

    Temporal and spatial resonant modes are always possessed in physical systems with energy oscillation. In ultrafast fiber lasers, enormous progress has been made toward controlling the interactions of many longitudinal modes, which results in temporally mode-locked pulses. Recently, optical vortex beams have been extensively investigated due to their quantized orbital angular momentum, spatially donut-like

    更新日期:2020-07-02
  • Distance-controllable and direction-steerable opto-conveyor for targeting delivery
    Photonics Res. (IF 6.099) Pub Date : 2020-06-05
    Zhen Che, Wenguo Zhu, Yaoming Huang, Yu Zhang, Linqing Zhuo, Pengpeng Fan, Zhibin Li, Huadan Zheng, Wenjin Long, Wentao Qiu, Yunhan Luo, Jun Zhang, Jinghua Ge, Jianhui Yu, and Zhe Chen

    Opto-conveyors have attracted widespread interest in various fields because of their non-invasive and non-contact delivery of micro/nanoparticles. However, the flexible control of the delivery distance and the dynamic steering of the delivery direction, although very desirable in all-optical manipulation, have not yet been achieved by opto-conveyors. Here, using a simple and cost-effective scheme of

    更新日期:2020-07-02
  • Ultrapure and highly efficient green light emitting devices based on ligand-modified CsPbBr3 quantum dots
    Photonics Res. (IF 6.099) Pub Date : 2020-06-03
    Dongdong Yan, Shuangyi Zhao, Huaxin Wang, and Zhigang Zang

    All inorganic CsPbBr3 perovskite quantum dots (QDs) have been recognized as promising optical materials to fabricate green light emission devices because of their excellent optical performance. However, regular CsPbBr3 QDs with an oleic acid (OA) ligand show poor stability, which limits their practical application. We replaced the OA ligand in CsPbBr3 QDs with a 2-hexyldecanoic acid (DA) ligand and

    更新日期:2020-07-02
  • MXene-based high-performance all-optical modulators for actively Q-switched pulse generation
    Photonics Res. (IF 6.099) Pub Date : 2020-06-12
    Qing Wu, Yunzheng Wang, Weichun Huang, Cong Wang, Zheng Zheng, Meng Zhang, and Han Zhang

    Q-switched fiber lasers are integral tools in science, industry, and medicine due to their advantages of flexibility, compactness, and reliability. All-optical strategies to generate ultrashort pulses have obtained considerable attention as they can modulate the intracavity Q factors without employing costly and complex electrically driven devices. Here, we propose a high-performance all-optical modulator

    更新日期:2020-07-02
  • Ultrabroadband and sensitive cavity optomechanical magnetometry
    Photonics Res. (IF 6.099) Pub Date : 2020-06-03
    Bei-Bei Li, George Brawley, Hamish Greenall, Stefan Forstner, Eoin Sheridan, Halina Rubinsztein-Dunlop, and Warwick P. Bowen

    Magnetostrictive optomechanical cavities provide a new optical readout approach to room-temperature magnetometry. Here we report ultrasensitive and ultrahigh bandwidth cavity optomechanical magnetometers constructed by embedding a grain of the magnetostrictive material Terfenol-D within a high quality (Q) optical microcavity on a silicon chip. By engineering their physical structure, we achieve a peak

    更新日期:2020-07-02
  • Phosphor-free single chip GaN-based white light emitting diodes with a moderate color rendering index and significantly enhanced communications bandwidth
    Photonics Res. (IF 6.099) Pub Date : 2020-06-05
    Rongqiao Wan, Xiang Gao, Liancheng Wang, Shuo Zhang, Xiongbin Chen, Zhiqiang Liu, Xiaoyan Yi, Junxi Wang, Junhui Li, Wenhui Zhu, and Jinmin Li

    To achieve high quality lighting and visible light communication (VLC) simultaneously, GaN based white light emitting diodes (WLEDs) oriented for lighting in VLC has attracted great interest. However, the overall bandwidth of conventional phosphor converted WLEDs is limited by the long lifetime of phosphor, the slow Stokes transfer process, the resistance-capacitance (RC) time delay, and the quantum-confined

    更新日期:2020-07-02
  • 64 Gb/s low-voltage waveguide SiGe avalanche photodiodes with distributed Bragg reflectors
    Photonics Res. (IF 6.099) Pub Date : 2020-06-05
    Binhao Wang, Zhihong Huang, Yuan Yuan, Di Liang, Xiaoge Zeng, Marco Fiorentino, and Raymond G. Beausoleil

    We demonstrate low-voltage waveguide silicon-germanium avalanche photodiodes (APDs) integrated with distributed Bragg reflectors (DBRs). The internal quantum efficiency is improved from 60% to 90% at 1550 nm assisted with DBRs while still achieving a 25 GHz bandwidth. A low breakdown voltage of 10 V and a gain bandwidth product of near 500 GHz are obtained. APDs with DBRs at a data rate of 64 Gb/s

    更新日期:2020-07-02
  • Polarization-enhanced AlGaN solar-blind ultraviolet detectors
    Photonics Res. (IF 6.099) Pub Date : 2020-07-01
    Ke Jiang, Xiaojuan Sun, Zi-Hui Zhang, Jianwei Ben, Jiamang Che, Zhiming Shi, Yuping Jia, Yang Chen, Shanli Zhang, Wei Lv, and Dabing Li

    AlGaN solar-blind ultraviolet detectors have great potential in many fields, although their performance has not fully meet the requirements until now. Here, we proposed an approach to utilize the inherent polarization effect of AlGaN to improve the detector performance. AlGaN heterostructures were designed to enhance the polarization field in the absorption layer, and a high built-in field and a high

    更新日期:2020-07-02
  • Multiphoton synthetic lattices in multiport waveguide arrays: synthetic atoms and Fock graphs
    Photonics Res. (IF 6.099) Pub Date : 2020-06-16
    Konrad Tschernig, Roberto de J. León-Montiel, Armando Pérez-Leija, and Kurt Busch

    Activating transitions between internal states of physical systems has emerged as an appealing approach to create lattices and complex networks. In such a scheme, the internal states or modes of a physical system are regarded as lattice sites or network nodes in an abstract space whose dimensionality may exceed the systems’ apparent (geometric) dimensionality. This introduces the notion of synthetic

    更新日期:2020-07-02
  • Wavelength-selective 2 × 2 optical switch based on a Ge2Sb2Te5-assisted microring
    Photonics Res. (IF 6.099) Pub Date : 2020-06-16
    Changping Zhang, Ming Zhang, Yiwei Xie, Yaocheng Shi, Rajesh Kumar, Roberto R. Panepucci, and Daoxin Dai

    A novel wavelength-selective 2×2 optical switch based on a Ge2Sb2Te5 (GST)-assisted microring-resonator (MRR) is proposed. The present GST-assisted MRR consists of two access optical waveguides and an MRR coupled with a bent GST-loaded silicon photonic waveguide. The 2×2 optical switch is switched ON or OFF by modifying the GST state to be crystalline or amorphous. In particular, the microring waveguide

    更新日期:2020-07-02
  • Subwavelength thick ultrahigh-Q terahertz disc microresonators
    Photonics Res. (IF 6.099) Pub Date : 2020-06-22
    Dominik Walter Vogt, Angus Harvey Jones, Thomas Alan Haase, and Rainer Leonhardt

    Artificial structures that exhibit narrow resonance features are key to a myriad of scientific advances and technologies. In particular, exploration of the terahertz (THz) spectrum—the final frontier of the electromagnetic spectrum—would greatly benefit from high-quality resonant structures. Here we present a new paradigm of terahertz silicon disc microresonators with subwavelength thickness. Experimental

    更新日期:2020-07-02
  • All-optical PtSe2 silicon photonic modulator with ultra-high stability
    Photonics Res. (IF 6.099) Pub Date : 2020-06-23
    Kangkang Wei, Delong Li, Zhitao Lin, Zhao Cheng, Yuhan Yao, Jia Guo, Yunzheng Wang, Yupeng Zhang, Jianji Dong, Han Zhang, and Xinliang Zhang

    All-optical modulation based on the photothermal effect of two-dimensional (2D) materials shows great promise for all-optical signal processing and communication. In this work, an all-optical modulator with a 2D PtSe2-on-silicon structure based on a microring resonator is proposed and demonstrated utilizing the photothermal effect of PtSe2. A tuning efficiency of 0.0040 nm · mW−1 is achieved, and the

    更新日期:2020-07-02
  • Polarization-independent highly efficient generation of Airy optical beams with dielectric metasurfaces
    Photonics Res. (IF 6.099) Pub Date : 2020-06-16
    Binbin Yu, Jing Wen, Lei Chen, Leihong Zhang, Yulong Fan, Bo Dai, Saima Kanwal, Dangyuan Lei, and Dawei Zhang

    Airy optical beams have emerged to hold enormous theoretical and experimental research interest due to their outstanding characteristics. Conventional approaches suffer from bulky and costly systems, as well as poor phase discretization. The newly developed metasurface-based Airy beam generators have constraints of polarization dependence or limited generation efficiency. Here, we experimentally demonstrate

    更新日期:2020-07-02
  • Reconfigurable nano-kirigami metasurfaces by pneumatic pressure
    Photonics Res. (IF 6.099) Pub Date : 2020-06-17
    Shanshan Chen, Wei Wei, Zhiguang Liu, Xing Liu, Shuai Feng, Honglian Guo, and Jiafang Li

    Tunable/reconfigurable metasurfaces that can actively control electromagnetic waves upon external stimuli are of great importance for practical applications of metasurfaces. Here, we demonstrate a reconfigurable nano-kirigami metasurface driven by pneumatic pressure operating in the near-infrared wavelength region. The metasurfaces consist of combined Archimedean spirals and are fabricated in a free-standing

    更新日期:2020-07-02
  • Low-loss hybrid plasmonic TM-pass polarizer using polarization-dependent mode conversion
    Photonics Res. (IF 6.099) Pub Date : 2020-07-01
    Ruixuan Chen, Bowen Bai, and Zhiping Zhou

    A low-loss hybrid plasmonic transverse magnetic (TM)-pass polarizer has been demonstrated utilizing polarization-dependent mode conversion. Taking advantage of the silicon hybrid plasmonic slot waveguide (HPSW), the unwanted transverse electric (TE) fundamental mode can be efficiently converted first to a TM higher-order mode and then suppressed by a power combiner, while the retained TM fundamental

    更新日期:2020-07-02
  • Multitask deep-learning-based design of chiral plasmonic metamaterials
    Photonics Res. (IF 6.099) Pub Date : 2020-07-01
    Eric Ashalley, Kingsley Acheampong, Lucas V. Besteiro, Peng Yu, Arup Neogi, Alexander O. Govorov, and Zhiming M. Wang

    The field of chiral plasmonics has registered considerable progress with machine-learning (ML)-mediated metamaterial prototyping, drawing from the success of ML frameworks in other applications such as pattern and image recognition. Here, we present an end-to-end functional bidirectional deep-learning (DL) model for three-dimensional chiral metamaterial design and optimization. This ML model utilizes

    更新日期:2020-07-02
  • Plasmonic resonance-linewidth shrinkage to boost biosensing
    Photonics Res. (IF 6.099) Pub Date : 2020-07-01
    Min Gao, Weimin Yang, Zhengying Wang, Shaowei Lin, Jinfeng Zhu, and Zhilin Yang

    Coupling effects of surface plasmon resonance (SPR) induce changes in the wavelength, intensity, and linewidth of plasmonic modes. Here, inspired by coupling effects, we reveal an abrupt linewidth-shrinking effect in 2D gold nanohole arrays at the azimuthal angle of 45° arising from the interference of two degenerate SPR modes. We further demonstrate the biosensing capability under various excitation

    更新日期:2020-07-02
  • Subwavelength thick ultrahigh-Q terahertz disc microresonators
    Photonics Res. (IF 6.099) Pub Date : 2020-06-22
    Dominik Walter Vogt, Angus Harvey Jones, Thomas Alan Haase, and Rainer Leonhardt

    Artificial structures that exhibit narrow resonance features are key to a myriad of scientific advances and technologies. In particular, exploration of the terahertz (THz) spectrum—the final frontier of the electromagnetic spectrum—would greatly benefit from high-quality resonant structures. Here we present a new paradigm of terahertz silicon disc microresonators with subwavelength thickness. Experimental

    更新日期:2020-06-23
  • 3D Hessian deconvolution of thick light-sheet z-stacks for high-contrast and high-SNR volumetric imaging
    Photonics Res. (IF 6.099) Pub Date : 2020-06-01
    Zhe Zhang, Dongzhou Gou, Fan Feng, Ruyi Zheng, Ke Du, Hongrun Yang, Guangyi Zhang, Huitao Zhang, Louis Tao, Liangyi Chen, and Heng Mao

    Due to its ability of optical sectioning and low phototoxicity, z-stacking light-sheet microscopy has been the tool of choice for in vivo imaging of the zebrafish brain. To image the zebrafish brain with a large field of view, the thickness of the Gaussian beam inevitably becomes several times greater than the system depth of field (DOF), where the fluorescence distributions outside the DOF will also

    更新日期:2020-06-01
  • MXene-Ti3C2Tx for watt-level high-efficiency pulse generation in a 2.8 μm mid-infrared fiber laser
    Photonics Res. (IF 6.099) Pub Date : 2020-06-01
    Chen Wei, Liqiang Zhou, Dongsheng Wang, Hao Chi, Hua Huang, Han Zhang, and Yong Liu

    We report a watt-level passively Q-switched 2.8 μm mid-infrared multi-mode fiber laser by employing multi-layered two-dimensional MXene-Ti3C2Tx as the saturable absorber (SA). The MXene-Ti3C2Tx is fabricated by selectively etching aluminum layers in Ti3AlC2. The non-saturable loss, modulation depth, and saturable intensity of the SA at 2866 nm were measured to be 25.0%, 33.2%, and 0.043 GW/cm2, respectively

    更新日期:2020-06-01
  • Excellent light-capture capability of trilobal SiNW for ultra-high JSC in single-nanowire solar cells
    Photonics Res. (IF 6.099) Pub Date : 2020-06-01
    Zhongliang Gao, Guilu Lin, Yupeng Zheng, Na Sang, Yingfeng Li, Lei Chen, and Meicheng Li

    Single-nanowire solar cells with a unique light-concentration property are expected to exceed the Shockley–Queisser limit. The architecture of single nanowire is an important factor to regulate its optical performance. We designed a trilobal silicon nanowire (SiNW) with two equivalent scales that possesses superior light-absorption efficiency in the whole wavelength range and shows good tolerance for

    更新日期:2020-06-01
  • Terahertz wave modulation properties of thermally processed BST/PZT ferroelectric photonic crystals
    Photonics Res. (IF 6.099) Pub Date : 2020-06-01
    Ying Zeng, Weijun Wang, Furi Ling, and Jianquan Yao

    BST(Ba0.5Sr0.5TiO3)/PZT(Pb0.52Zr0.48TiO3) photonic crystals were fabricated by magnetron sputtering and annealed at 620°C−700°C. By controlling the crystallinity and the oxygen vacancies of the ferroelectric photonic crystals, the optically and electrically controllable terahertz wave modulations were realized. The variation in refractive index of the 680°C annealed sample showed the highest modulation

    更新日期:2020-06-01
  • Nonlinear optical absorption properties of InP nanowires and applications as a saturable absorber
    Photonics Res. (IF 6.099) Pub Date : 2020-06-01
    Junting Liu, Hongkun Nie, Bingzheng Yan, Kejian Yang, He Yang, Vladislav Khayrudinov, Harri Lipsanen, Baitao Zhang, and Jingliang He

    Indium phosphide (InP) nanowires (NWs) have attracted significant attention due to their exotic properties that are different from the bulk counterparts, and have been widely used for light generation, amplification, detection, modulation, and switching, etc. Here, high-quality InP NWs were directly grown on a quartz substrate by the Au-nanoparticle assisted vapor-liquid-solid method. We thoroughly

    更新日期:2020-06-01
  • Impact of tin-oxide nanoparticles on improving the carrier transport in the Ag/p-GaN interface of InGaN/GaN micro-light-emitting diodes by originating inhomogeneous Schottky barrier height
    Photonics Res. (IF 6.099) Pub Date : 2020-06-01
    Jae Hyeok Lee, Abu Bashar Mohammad Hamidul Islam, Tae Kyoung Kim, Yu-Jung Cha, and Joon Seop Kwak

    The effect of tin-oxide (SnO) nanoparticles, which are obtained by indium-tin-oxide (ITO) treatment, on the p-GaN surface of GaN-based flip-chip blue micro-light-emitting diode (μ-LED) arrays is investigated. A thin Ag layer is deposited on the ITO-treated p-GaN surface by sputtering. SnO nanoparticles originate from inhomogeneous Schottky barrier heights (SBHs) at Ag/p-GaN contact. Therefore, effective

    更新日期:2020-06-01
  • Spectrally resolved Hong–Ou–Mandel interferometry for quantum-optical coherence tomography
    Photonics Res. (IF 6.099) Pub Date : 2020-06-01
    Pablo Yepiz-Graciano, Alí Michel Angulo Martínez, Dorilian Lopez-Mago, Hector Cruz-Ramirez, and Alfred B. U’Ren

    In this paper, we revisit the well-known Hong–Ou–Mandel (HOM) effect in which two photons, which meet at a beamsplitter, can interfere destructively, leading to null in coincidence counts. In a standard HOM measurement, the coincidence counts across the two output ports of the beamsplitter are monitored as the temporal delay between the two photons prior to the beamsplitter is varied, resulting in

    更新日期:2020-06-01
  • Integrated mode-transparent polarization beam splitter supporting thirteen data channels
    Photonics Res. (IF 6.099) Pub Date : 2020-06-01
    Chunlei Sun, Yu Yu, Yunhong Ding, Zhen Li, Wei Qi, and Xinliang Zhang

    The hybrid multiplexing technique reactivates optical interconnect as it offers multiple dimensions to dramatically enhance the data capacity of a single wavelength carrier. A straightforward method to realize hybrid multiplexing is to perform polarization multiplexing for mode-multiplexed signals, by utilizing a mode-transparent polarization beam splitter (MTPBS), which can process multiple modes

    更新日期:2020-06-01
  • Novel spectral-shaping building block: a narrowband Mach–Zehnder interferometer
    Photonics Res. (IF 6.099) Pub Date : 2020-06-01
    Jordan A. Davis, Ang Li, Naif Alshamrani, and Yeshaiahu Fainman

    We present an experimental demonstration of notch filters with arbitrary center wavelengths capable of tunable analog output power values varying between full extinction of 15 and 0 dB. Each filter is composed of highly modular apodized four-port Bragg add/drop filters to reduce the crosstalk between concatenated devices. The constructed photonic integrated circuit experimentally demonstrates spectra

    更新日期:2020-06-01
  • Bi-channel near- and far-field optical vortex generator based on a single plasmonic metasurface
    Photonics Res. (IF 6.099) Pub Date : 2020-06-01
    Qiao Jiang, Yanjun Bao, Jing Li, Lifeng Tian, Tong Cui, Lin Sun, Bowen Du, Bowen Li, Benfeng Bai, Jia Wang, Hongbo Sun, Bo Shen, Han Zhang, Feng Lin, Xing Zhu, and Zheyu Fang

    With the recent development of the metasurface, generating an optical vortex in optical far or near fields is realized in various ways. However, to generate vortices in both the near and far fields simultaneously is still a challenge, although it has great potential in the future compact and versatile photonic system. Here, a bi-channel optical vortex generator in both the near and far fields is proposed

    更新日期:2020-06-01
  • Disclosing transverse spin angular momentum of surface plasmon polaritons through independent spatiotemporal imaging of its in-plane and out-of-plane electric field components
    Photonics Res. (IF 6.099) Pub Date : 2020-06-01
    Yulu Qin, Boyu Ji, Xiaowei Song, and Jingquan Lin

    The comprehensive capture of near-field spatiotemporal information of surface plasmon polaritons (SPPs) is a prerequisite for revealing their physical nature. In this study, we first performed an independent, spatiotemporal imaging of the out-of-plane and in-plane components of SPP near-fields in a femtosecond light-excited trench using an obliquely incident time-resolved photoemission electron microscopy

    更新日期:2020-06-01
  • Erbium-doped TeO2-coated Si3N4 waveguide amplifiers with 5 dB net gain: erratum
    Photonics Res. (IF 6.099) Pub Date : 2020-06-01
    Henry C. Frankis, Hamidu M. Mbonde, Dawson B. Bonneville, Chenglin Zhang, Richard Mateman, Arne Leinse, and Jonathan D. B. Bradley

    This erratum corrects typos that appeared in Photon. Res. 8, 127 (2020) [CrossRef] in the text, a figure showing the experimental setup, and a table listing the absorption and emission cross section values used in simulations.

    更新日期:2020-06-01
  • Edge enhancement through scattering media enabled by optical wavefront shaping
    Photonics Res. (IF 6.099) Pub Date : 2020-05-28
    Zihao Li, Zhipeng Yu, Hui Hui, Huanhao Li, Tianting Zhong, Honglin Liu, and Puxiang Lai

    Edge enhancement is a fundamental and important topic in imaging and image processing, as perception of edge is one of the keys to identify and comprehend the contents of an image. Edge enhancement can be performed in many ways, through hardware or computation. Existing methods, however, have been limited in free space or clear media for optical applications; in scattering media such as biological

    更新日期:2020-05-28
  • In situ optical backpropagation training of diffractive optical neural networks
    Photonics Res. (IF 6.099) Pub Date : 2020-05-28
    Tiankuang Zhou, Lu Fang, Tao Yan, Jiamin Wu, Yipeng Li, Jingtao Fan, Huaqiang Wu, Xing Lin, and Qionghai Dai

    Training an artificial neural network with backpropagation algorithms to perform advanced machine learning tasks requires an extensive computational process. This paper proposes to implement the backpropagation algorithm optically for in situ training of both linear and nonlinear diffractive optical neural networks, which enables the acceleration of training speed and improvement in energy efficiency

    更新日期:2020-05-28
  • Controllable photonic spin Hall effect with phase function construction
    Photonics Res. (IF 6.099) Pub Date : 2020-05-28
    Yanliang He, Zhiqiang Xie, Bo Yang, Xueyu Chen, Junmin Liu, Huapeng Ye, Xinxing Zhou, Ying Li, Shuqing Chen, and Dianyuan Fan

    Photonic spin Hall effect (SHE) provides new opportunities for achieving spin-based photonics applications. However, flexibly manipulating the spin-dependent splitting (SDS) of photonic SHE and imposing extra phase modulation on the two spin components are always a challenge. Here, a controllable SHE mechanism based on phase function construction is reported. It is concluded that the phases with specific

    更新日期:2020-05-28
  • Blind position detection for large field-of-view scattering imaging
    Photonics Res. (IF 6.099) Pub Date : 2020-05-26
    Xiaoyu Wang, Xin Jin, and Junqi Li

    Prior-free imaging beyond the memory effect (ME) is critical to seeing through the scattering media. However, methods proposed to exceed the ME range have suffered from the availability of prior information of imaging targets. Here, we propose a blind target position detection for large field-of-view scattering imaging. Only exploiting two captured multi-target near-field speckles at different imaging

    更新日期:2020-05-26
  • Frequency comb swept laser with a high-Q microring filter
    Photonics Res. (IF 6.099) Pub Date : 2020-05-26
    Dongmei Huang, Feng Li, Chao Shang, Zihao Cheng, S. T. Chu, and P. K. A. Wai

    Frequency comb swept lasers are the enabling technology of circular interferometric imaging, which was proposed to break the bottleneck of data acquisition and processing in optical coherence tomography (OCT) at video rate. In this paper, we propose and demonstrate a highly coherent frequency comb swept laser by using a high-quality (high-Q) microring comb filter to discretize a Fourier-domain mode-locked

    更新日期:2020-05-26
  • Stimulated Raman scattering signal generation in a scattering medium using self-reconstructing Bessel beams
    Photonics Res. (IF 6.099) Pub Date : 2020-05-26
    Xueli Chen, Xinyu Wang, Lin Wang, Peng Lin, Yonghua Zhan, and Ji-Xin Cheng

    Scattering is a huge challenge for microscopic imaging. Indeed, it is difficult to observe target chemicals in scattering media by means of the current Gaussian beam-based stimulated Raman scattering (SRS) microscopy, since the tight focus of the Gaussian beam is destroyed after propagating through a certain distance. Bessel beams, featuring self-reconstructing property, may bring a solution to this

    更新日期:2020-05-26
  • Design and fabrication of a SiN-Si dual-layer optical phased array chip
    Photonics Res. (IF 6.099) Pub Date : 2020-05-26
    Pengfei Wang, Guangzhen Luo, Yang Xu, Yajie Li, Yanmei Su, Jianbin Ma, Ruiting Wang, Zhengxia Yang, Xuliang Zhou, Yejin Zhang, and Jiaoqing Pan

    A SiN-Si dual-layer optical phased array (OPA) chip is designed and fabricated. It combines the low loss of SiN with the excellent modulation performance of Si, which improves the performance of Si single-layer OPA. A novel optical antenna and an improved phase modulation method are also proposed, and a two-dimensional scanning range of 96°×14° is achieved, which makes the OPA chip more practical.

    更新日期:2020-05-26
  • Cross-cumulant enhanced radiality nanoscopy for multicolor superresolution subcellular imaging
    Photonics Res. (IF 6.099) Pub Date : 2020-05-26
    Zhiping Zeng, Jing Ma, and Canhua Xu

    Fluorescence fluctuation-based superresolution techniques can achieve fast superresolution imaging on a cost-effective wide-field platform at a low light level with reduced phototoxicity. However, the current methods exhibit certain imaging deficiencies that misinterpret nanoscale features reconstructed from fluctuating image sequences, thus degrading the superresolution imaging quality and performance

    更新日期:2020-05-26
  • Horizontal GeSn/Ge multi-quantum-well ridge waveguide LEDs on silicon substrates
    Photonics Res. (IF 6.099) Pub Date : 2020-05-26
    Linzhi Peng, Xiuli Li, Zhi Liu, Xiangquan Liu, Jun Zheng, Chunlai Xue, Yuhua Zuo, and Buwen Cheng

    A horizontal p−i−n ridge waveguide emitter on a silicon (100) substrate with a Ge0.91Sn0.09/Ge multi-quantum-well (MQW) active layer was fabricated by molecular beam epitaxy. The device structure was designed to reduce light absorption of metal electrodes and improve injection efficiency. Electroluminescence (EL) at a wavelength of 2160 nm was observed at room temperature. Theoretical calculations

    更新日期:2020-05-26
  • Real-time dynamics of soliton triplets in fiber lasers
    Photonics Res. (IF 6.099) Pub Date : 2020-05-14
    Yiyang Luo, Ran Xia, Perry Ping Shum, Wenjun Ni, Yusong Liu, Huy Quoc Lam, Qizhen Sun, Xiahui Tang, and Luming Zhao

    The evolution of soliton molecules emphasizes the complex soliton dynamics akin to matter molecules. Beyond the simplest soliton molecule—a soliton pair constituted by two bound pulses—soliton molecules with more constituents have more degrees of freedom because of the temporal pulse separations and relative phases. Here we detailedly characterize the transient dynamics of soliton triplets in fiber

    更新日期:2020-05-14
  • Dynamic Airy imaging through high-efficiency broadband phase microelements by femtosecond laser direct writing
    Photonics Res. (IF 6.099) Pub Date : 2020-05-14
    Ze Cai, Xinbo Qi, Deng Pan, Shengyun Ji, Jincheng Ni, Zhaoxin Lao, Chen Xin, Jiawen Li, Yanlei Hu, Dong Wu, and Jiaru Chu

    Manipulating Airy beams to symmetric Airy beams (SABs) with abruptly autofocusing and self-accelerating properties has attracted much attention. With such a particular propagation dynamic, SABs may provide great potential in dynamic signal imaging. On the other hand, the generation of SABs by spatial light modulators suffers from the limitations of phase gradient accuracy, low optical efficiency (<40%)

    更新日期:2020-05-14
  • Super-resolution compressive spectral imaging via two-tone adaptive coding: publisher’s note
    Photonics Res. (IF 6.099) Pub Date : 2020-05-14
    Chang Xu, Tingfa Xu, Ge Yan, Xu Ma, Yuhan Zhang, Xi Wang, Feng Zhao, and Gonzalo R. Arce

    This publisher’s note corrects the authorship in Photon. Res. 8, 395 (2020) [CrossRef] .

    更新日期:2020-05-14
  • Chip-scale full-Stokes spectropolarimeter in silicon photonic circuits
    Photonics Res. (IF 6.099) Pub Date : 2020-05-14
    Zhongjin Lin, Tigran Dadalyan, Simon Bélanger-de Villers, Tigran Galstian, and Wei Shi

    Wavelength-dependent polarization state of light carries crucial information about light–matter interactions. However, its measurement is limited to bulky, high energy-consuming devices, which prohibits many modern, portable applications. Here, we propose and demonstrate a chip-scale spectropolarimeter implemented using a complementary metal oxide semiconductor compatible silicon photonics technology

    更新日期:2020-05-14
  • Cavity-based photoconductive sources for real-time terahertz imaging
    Photonics Res. (IF 6.099) Pub Date : 2020-05-12
    J. Hawecker, V. Pistore, A. Minasyan, K. Maussang, J. Palomo, I. Sagnes, J.-M. Manceau, R. Colombelli, J. Tignon, J. Mangeney, and S. S. Dhillon

    Optically driven photoconductive switches are one of the predominant sources currently used in terahertz imaging systems. However, owing to their low average powers, only raster-based images can be taken, resulting in slow acquisition. In this work, we show that by placing a photoconductive switch within a cavity, we are able to generate absolute average THz powers of 181 μW with the frequency of the

    更新日期:2020-05-12
  • Sub-nanosecond-speed frequency-reconfigurable photonic radio frequency switch using a silicon modulator
    Photonics Res. (IF 6.099) Pub Date : 2020-05-12
    Yiwei Xie, Leimeng Zhuang, Pengcheng Jiao, and Daoxin Dai

    Radio frequency (RF) switches are essential for implementing routing of RF signals. However, the increasing demand for RF signal frequency and bandwidth is posing a challenge of switching speed to the conventional solutions, i.e., the capability of operating at a sub-nanosecond speed or faster. In addition, signal frequency reconfigurability is also a desirable feature to facilitate new innovations

    更新日期:2020-05-12
  • Optomechanical cooling and self-stabilization of a waveguide coupled to a whispering-gallery-mode resonator
    Photonics Res. (IF 6.099) Pub Date : 2020-05-08
    Riccardo Pennetta, Shangran Xie, Richard Zeltner, Jonas Hammer, and Philip St. J. Russell

    Laser cooling of mechanical degrees of freedom is one of the most significant achievements in the field of optomechanics. Here, we report, for the first time to the best of our knowledge, efficient passive optomechanical cooling of the motion of a freestanding waveguide coupled to a whispering-gallery-mode (WGM) resonator. The waveguide is an 8 mm long glass-fiber nanospike, which has a fundamental

    更新日期:2020-05-08
  • High-speed and high-efficiency three-dimensional shape measurement based on Gray-coded light
    Photonics Res. (IF 6.099) Pub Date : 2020-05-06
    Zhoujie Wu, Wenbo Guo, Yueyang Li, Yihang Liu, and Qican Zhang

    Fringe projection profilometry has been increasingly sought and applied in dynamic three-dimensional (3D) shape measurement. In this work, a robust, high-efficiency 3D measurement based on Gray-coded light is proposed. Unlike the traditional method, a tripartite phase unwrapping method is proposed to avoid the jump errors on the boundary of code words, which are mainly caused by the defocusing of the

    更新日期:2020-05-06
  • Build-up dynamics in bidirectional soliton fiber lasers
    Photonics Res. (IF 6.099) Pub Date : 2020-05-06
    Igor Kudelin, Srikanth Sugavanam, and Maria Chernysheva

    Bidirectional ultrafast fiber lasers present an attractive solution, enabling the generation of two mutually coherent ultrashort pulse trains in a simple and turnkey system. Still, the lack of a comprehensive numerical model describing steady-state bidirectional generation, and even less ultrafast soliton breakdowns and collisions, is obstructing the achievement of the performance compared with unidirectional

    更新日期:2020-05-06
  • Highly luminescent and stable lead-free cesium copper halide perovskite powders for UV-pumped phosphor-converted light-emitting diodes
    Photonics Res. (IF 6.099) Pub Date : 2020-05-06
    Lingling Xie, Bingkun Chen, Fa Zhang, Ziheng Zhao, Xinxin Wang, Lijie Shi, Yue Liu, Lingling Huang, Ruibin Liu, Bingsuo Zou, and Yongtian Wang

    Lead halide perovskites have drawn extensive attention over recent decades owing to their outstanding photoelectric performances. However, their toxicity and instability are big issues that need to be solved for further commercialization. Herein, we adopt a facile dry ball milling method to synthesize lead-free Cs3Cu2X5 (X=I, Cl) perovskites with photoluminescence (PL) quantum yield up to 60%. The

    更新日期:2020-05-06
  • Analysis of TM/TE mode enhancement and droop reduction by a nanoporous n-AlGaN underlayer in a 290 nm UV-LED
    Photonics Res. (IF 6.099) Pub Date : 2020-05-06
    Yufeng Li, Chenyu Wang, Ye Zhang, Peng Hu, Shengnan Zhang, Mengqi Du, Xilin Su, Qiang Li, and Feng Yun

    A full structure 290-nm ultraviolet light-emitting diode (UV-LED) with a nanoporous n-AlGaN underlayer was fabricated by top via hole formation followed by high-voltage electrochemical etching. The 20 to 120 nm nanopores were prepared in regular doped n-AlGaN by adjusting the etching voltage. The comparison between the Raman spectrum and the photoluminescence wavelength shows that the biaxial stress

    更新日期:2020-05-06
  • Revealing the surface electronic structures of AlGaN deep-ultraviolet multiple quantum wells with lateral polarity domains
    Photonics Res. (IF 6.099) Pub Date : 2020-05-06
    Wei Guo, Li Chen, Houqiang Xu, Yingda Qian, Moheb Sheikhi, Jason Hoo, Shiping Guo, Liang Xu, Jianzhe Liu, Feras Alqatari, Xiaohang Li, Kaiyan He, Zhe Chuan Feng, and Jichun Ye

    We report on the carrier dynamic and electronic structure investigations on AlGaN-based deep-ultraviolet multiple quantum wells (MQWs) with lateral polarity domains. The localized potential maximum is predicted near the domain boundaries by first-principle calculation, suggesting carrier localization and efficient radiative recombination. More importantly, lateral band diagrams of the MQWs are proposed

    更新日期:2020-05-06
Contents have been reproduced by permission of the publishers.
导出
全部期刊列表>>
材料学研究精选
Springer Nature Live 产业与创新线上学术论坛
胸腔和胸部成像专题
自然科研论文编辑服务
ACS ES&T Engineering
ACS ES&T Water
屿渡论文,编辑服务
杨超勇
周一歌
华东师范大学
南京工业大学
清华大学
中科大
唐勇
跟Nature、Science文章学绘图
隐藏1h前已浏览文章
中洪博元
课题组网站
新版X-MOL期刊搜索和高级搜索功能介绍
ACS材料视界
x-mol收录
福州大学
南京大学
王杰
左智伟
湖南大学
清华大学
吴杰
赵延川
中山大学化学工程与技术学院
试剂库存
天合科研
down
wechat
bug