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光：科学与应用（英文版）
中国科学院长春光学精密机械与物理研究所
光：科学与应用（英文版）

中国科学院长春光学精密机械与物理研究所

双月

2095-5545

light_lsa@ciomp.ac.cn

0431-86176851

130033

吉林省长春市东南湖大路3888号 中国科学院长春光学精密机械与物理研究所

光：科学与应用（英文版）/Journal Light：Science & ApplicationsCSCDCSTPCD北大核心EISCI
查看更多>>《Light: Science & Applications》（《光：科学与应用》）是由中国科学院长春光学精密机械与物理研究所与中国光学学会共同主办，与自然出版集团（现更名为Springer Nature）合作出版的全英文开放获取（OA）国际学术期刊。该刊于2012年3月29日创刊，2013年10月先后被国际著名检索系统SCI及全球最大文摘引文数据库Scopus收录，最新影响引子14.098，连续3年位于SCI收录的光学期刊影响因子榜前3位。该刊是自然出版集团在中国出版的第一本OA物理类期刊，致力于推动全球范围内的光学研究，刊载光学领域基础、应用基础以及工程技术研究及应用方面的高水平的最新研究成果，包括小尺度光学、特种光学、光学材料及处理、光学元件制备、光学数据传输、光学测量、光学在生命科学及环境科学等领域的应用等方面的高质量、高影响力的原创性学术论文、News & Views、快报、展望和综述文章。
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    Mid-infrared computational temporal ghost imaging

    Han WuBo HuLu ChenFei Peng...
    1088-1097页
    查看更多>>摘要：Ghost imaging in the time domain allows for reconstructing fast temporal objects using a slow photodetector.The technique involves correlating random or pre-programmed probing temporal intensity patterns with the integrated signal measured after modulation by the temporal object.However,the implementation of temporal ghost imaging necessitates ultrafast detectors or modulators for measuring or pre-programming the probing intensity patterns,which are not available in all spectral regions especially in the mid-infrared range.Here,we demonstrate a frequency downconversion temporal ghost imaging scheme that enables to extend the operation regime to arbitrary wavelengths regions where fast modulators and detectors are not available.The approach modulates a signal with temporal intensity patterns in the near-infrared and transfers the patterns to an idler via difference-frequency generation in a nonlinear crystal at a wavelength where the temporal object can be retrieved.As a proof-of-concept,we demonstrate computational temporal ghost imaging in the mid-infrared with operating wavelength that can be tuned from 3.2 to 4.3 μm.The scheme is flexible and can be extended to other regimes.Our results introduce new possibilities for scan-free pump-probe imaging and the study of ultrafast dynamics in spectral regions where ultrafast modulation or detection is challenging such as the mid-infrared and THz regions.
      原文链接:
    • 国家科技期刊平台
    • NETL
    • NSTL
    • 万方数据

    Microsphere-assisted hyperspectral imaging:super-resolution,non-destructive metrology for semiconductor devices

    Jangryul ParkYoungsun ChoiSoonyang KwonYoungjun Lee...
    1098-1111页
    查看更多>>摘要：As semiconductor devices shrink and their manufacturing processes advance,accurately measuring in-cell critical dimensions(CD)becomes increasingly crucial.Traditional test element group(TEG)measurements are becoming inadequate for representing the fine,repetitive patterns in cell blocks.Conventional non-destructive metrology technologies like optical critical dimension(OCD)are limited due to their large spot diameter of approximately 25 μm,which impedes their efficacy for detailed in-cell structural analysis.Consequently,there is a pressing need for small-spot and non-destructive metrology methods.To address this limitation,we demonstrate a microsphere-assisted hyperspectral imaging(MAHSI)system,specifically designed for small spot optical metrology with super-resolution.Utilizing microsphere-assisted super-resolution imaging,this system achieves an optical resolution of 66 nm within a field of view of 5.6 μm × 5.6 μm.This approach effectively breaks the diffraction limit,significantly enhancing the magnification of the system.The MAHSI system incorporating hyperspectral imaging with a wavelength range of 400-790 nm,enables the capture of the reflection spectrum at each camera pixel.The achieved pixel resolution,which is equivalent to the measuring spot size,is 14.4nm/pixel and the magnification is 450X.The MAHSI system enables measurement of local uniformity in critical areas like corners and edges of DRAM cell blocks,areas previously challenging to inspect with conventional OCD methods.To our knowledge,this approach represents the first global implementation of microsphere-assisted hyperspectral imaging to address the metrology challenges in complex 3D structures of semiconductor devices.
      原文链接:
    • 国家科技期刊平台
    • NETL
    • NSTL
    • 万方数据

    Quantum dot-enabled infrared hyperspectral imaging with single-pixel detection

    Heyan MengYuan GaoXuhong WangXianye Li...
    1112-1121页
    查看更多>>摘要：Near-infrared(NIR)hyperspectral imaging is a powerful technique that enables the capture of three-dimensional(3D)spectra-spatial information within the NIR spectral range,offering a wide array of applications.However,the high cost associated with InGaAs focal plane array(FPA)has impeded the widespread adoption of NIR hyperspectral imaging.Addressing this challenge,in this study,we adopt an alternative approach—single-pixel detection for NIR hyperspectral imaging.Our investigation reveals that single-pixel detection outperforms conventional FPA,delivering a superior signal-to-noise ratio(SNR)for both spectral and imaging reconstruction.To implement this strategy,we leverage self-assembled colloidal quantum dots(CQDs)and a digital micromirror device(DMD)for NIR spectral and spatial information multiplexing,complemented by single-pixel detection for simultaneous spectral and image reconstruction.Our experimental results demonstrate successful NIR hyperspectral imaging with a detection window about 600 nm and an average spectral resolution of 8.6 nm with a pixel resolution of 128 × 128.The resulting spectral and spatial data align well with reference instruments,which validates the effectiveness of our approach.By circumventing the need for expensive and bulky FPA and wavelength selection components,our solution shows promise in advancing affordable and accessible NIR hyperspectral imaging technologies,thereby expanding the range of potential applications.
      原文链接:
    • 国家科技期刊平台
    • NETL
    • NSTL
    • 万方数据

    All-optical complex field imaging using diffractive processors

    Jingxi LiYuhang LiTianyi GanChe-Yung Shen...
    1122-1139页
    查看更多>>摘要：Complex field imaging,which captures both the amplitude and phase information of input optical fields or objects,can offer rich structural insights into samples,such as their absorption and refractive index distributions.However,conventional image sensors are intensity-based and inherently lack the capability to directly measure the phase distribution of a field.This limitation can be overcome using interferometric or holographic methods,often supplemented by iterative phase retrieval algorithms,leading to a considerable increase in hardware complexity and computational demand.Here,we present a complex field imager design that enables snapshot imaging of both the amplitude and quantitative phase information of input fields using an intensity-based sensor array without any digital processing.Our design utilizes successive deep learning-optimized diffractive surfaces that are structured to collectively modulate the input complex field,forming two independent imaging channels that perform amplitude-to-amplitude and phase-to-intensity transformations between the input and output planes within a compact optical design,axially spanning～100 wavelengths.The intensity distributions of the output fields at these two channels on the sensor plane directly correspond to the amplitude and quantitative phase profiles of the input complex field,eliminating the need for any digital image reconstruction algorithms.We experimentally validated the efficacy of our complex field diffractive imager designs through 3D-printed prototypes operating at the terahertz spectrum,with the output amplitude and phase channel images closely aligning with our numerical simulations.We envision that this complex field imager will have various applications in security,biomedical imaging,sensing and material science,among others.
      原文链接:
    • 国家科技期刊平台
    • NETL
    • NSTL
    • 万方数据

    Ultra-high spatio-temporal resolution imaging with parallel acquisition-readout structured illumination microscopy(PAR-SIM)

    Xinzhu XuWenyi WangLiang QiaoYunzhe Fu...
    1140-1158页
    查看更多>>摘要：Structured illumination microscopy(SIM)has emerged as a promising super-resolution fluorescence imaging technique,offering diverse configurations and computational strategies to mitigate phototoxicity during real-time imaging of biological specimens.Traditional efforts to enhance system frame rates have concentrated on processing algorithms,like rolling reconstruction or reduced frame reconstruction,or on investments in costly sCMOS cameras with accelerated row readout rates.In this article,we introduce an approach to elevate SIM frame rates and region of interest(ROI)coverage at the hardware level,without necessitating an upsurge in camera expenses or intricate algorithms.Here,parallel acquisition-readout SIM(PAR-SIM)achieves the highest imaging speed for fluorescence imaging at currently available detector sensitivity.By using the full frame-width of the detector through synchronizing the pattern generation and image exposure-readout process,we have achieved a fundamentally stupendous information spatial-temporal flux of 132.9 MPixels·s-1,9.6-fold that of the latest techniques,with the lowest SNR of-2.11 dB and 100nm resolution.PAR-SIM demonstrates its proficiency in successfully reconstructing diverse cellular organelles in dual excitations,even under conditions of low signal due to ultra-short exposure times.Notably,mitochondrial dynamic tubulation and ongoing membrane fusion processes have been captured in live COS-7 cell,recorded with PAR-SIM at an impressive 408 Hz.We posit that this novel parallel exposure-readout mode not only augments SIM pattern modulation for superior frame rates but also holds the potential to benefit other complex imaging systems with a strategic controlling approach.
      原文链接:
    • 国家科技期刊平台
    • NETL
    • NSTL
    • 万方数据

    Spatially selective p-type doping for constructing lateral WS2 p-n homojunction via low-energy nitrogen ion implantation

    Yufan KangYongfeng PeiDong HeHang Xu...
    1159-1169页
    查看更多>>摘要：The construction of lateral p-n junctions is very important and challenging in two-dimensional(2D)semiconductor manufacturing process.Previous researches have demonstrated that vertical p-n junction can be prepared simply by vertical stacking of 2D materials.However,interface pollution and large area scalability are challenges that are difficult to overcome with vertical stacking technology.Constructing 2D lateral p-n homojunction is an effective strategy to address these issues.Spatially selective p-type doping of 2D semiconductors is expected to construct lateral p-n homojunction.In this work,we have developed a low-energy ion implantation system that reduces the implanted energy to 300 eV.Low-energy implantation can form a shallow implantation depth,which is more suitable for modulating the electrical and optical properties of 2D materials.Hence,we utilize low-energy ion implantation to directly dope nitrogen ions into few-layer WS2 and successfully realize a precise regulation for WS2 with its conductivity type transforming from n-type to bipolar or even p-type conduction.Furthermore,the universality of this method is demonstrated by extending it to other 2D semiconductors,including WSe2,SnS2 and MoS2.Based on this method,a lateral WS2 p-n homojunction is fabricated,which exhibits significant rectification characteristics.A photodetector based on p-n junction with photovoltaic effect is also prepared,and the open circuit voltage can reach to 0.39 V.This work provides an effective way for controllable doping of 2D semiconductors.
      原文链接:
    • 国家科技期刊平台
    • NETL
    • NSTL
    • 万方数据

    Free-standing microscale photonic lantern spatial mode(De-)multiplexer fabricated using 3D nanoprinting

    Yoav DanaYehudit GarciaAleksei KukinLauren Dallachiesa...
    1170-1185页
    查看更多>>摘要：Photonic lantern(PL)spatial multiplexers show great promise for a range of applications,such as future high-capacity mode division multiplexing(MDM)optical communication networks and free-space optical communication.They enable efficient conversion between multiple single-mode(SM)sources and a multimode(MM)waveguide of the same dimension.PL multiplexers operate by facilitating adiabatic transitions between the SM arrayed space and the single MM space.However,current fabrication methods are forcing the size of these devices to multi-millimeters,making integration with micro-scale photonic systems quite challenging.The advent of 3D micro and nano printing techniques enables the fabrication of freestanding photonic structures with a high refractive index contrast(photopolymer-air).In this work we present the design,fabrication,and characterization of a 6-mode mixing,375 μm long PL that enables the conversion between six single-mode inputs and a single six-mode waveguide.The PL was designed using a genetic algorithm based inverse design approach and fabricated directly on a 7-core fiber using a commercial two-photon polymerization-based 3D printer and a photopolymer.Although the waveguides exhibit high index contrast,low insertion loss(-2.6 dB),polarization dependent(-0.2 dB)and mode dependent loss(-4.4 dB)were measured.
      原文链接:
    • 国家科技期刊平台
    • NETL
    • NSTL
    • 万方数据

    Precise mode control of laser-written waveguides for broadband,low-dispersion 3D integrated optics

    Yuying WangLijing ZhongKuen Yao LauXuhu Han...
    1186-1195页
    查看更多>>摘要：Three-dimensional(3D)glass chips are promising waveguide platforms for building hybrid 3D photonic circuits due to their 3D topological capabilities,large transparent windows,and low coupling dispersion.At present,the key challenge in scaling down a benchtop optical system to a glass chip is the lack of precise methods for controlling the mode field and optical coupling of 3D waveguide circuits.Here,we propose an overlap-controlled multi-scan(OCMS)method based on laser-direct lithography that allows customizing the refractive index profile of 3D waveguides with high spatial precision in a variety of glasses.On the basis of this method,we achieve variable mode-field distribution,robust and broadband coupling,and thereby demonstrate dispersionless LP21-mode conversion of supercontinuum pulses with the largest deviation of＜0.1 dB in coupling ratios on 210 nm broadband.This approach provides a route to achieve ultra-broadband and low-dispersion coupling in 3D photonic circuits,with overwhelming advantages over conventional planar waveguide-optic platforms for on-chip transmission and manipulation of ultrashort laser pulses and broadband supercontinuum.
      原文链接:
    • 国家科技期刊平台
    • NETL
    • NSTL
    • 万方数据

    Deformable microlaser force sensing

    Eleni DalakaJoseph S.HillJonathan H.H.BoothAnna Popczyk...
    1196-1209页
    查看更多>>摘要：Mechanical forces are key regulators of cellular behavior and function,affecting many fundamental biological processes such as cell migration,embryogenesis,immunological responses,and pathological states.Specialized force sensors and imaging techniques have been developed to quantify these otherwise invisible forces in single cells and in vivo.However,current techniques rely heavily on high-resolution microscopy and do not allow interrogation of optically dense tissue,reducing their application to 2D cell cultures and highly transparent biological tissue.Here,we introduce DEFORM,deformable microlaser force sensing,a spectroscopic technique that detects sub-nanonewton forces with unprecedented spatio-temporal resolution.DEFORM is based on the spectral analysis of laser emission from dye-doped oil microdroplets and uses the force-induced lifting of laser mode degeneracy in these droplets to detect nanometer deformations.Following validation by atomic force microscopy and development of a model that links changes in laser spectrum to applied force,DEFORM is used to measure forces in 3D and at depths of hundreds of microns within tumor spheroids and late-stage Drosophila larva.We furthermore show continuous force sensing with single-cell spatial and millisecond temporal resolution,thus paving the way for non-invasive studies of biomechanical forces in advanced stages of embryogenesis,tissue remodeling,and tumor invasion.
      原文链接:
    • 国家科技期刊平台
    • NETL
    • NSTL
    • 万方数据

    When quantum dots meet blue phase liquid crystal elastomers:visualized full-color and mechanically-switchable circularly polarized luminescence

    Shan LiYuqi TangQingyan FanZiyuan Li...
    1210-1220页
    查看更多>>摘要：Polymer-based circularly polarized luminescence(CPL)materials with the advantage of diversified structure,easy fabrication,high thermal stability,and tunable properties have garnered considerable attention.However,adequate and precise tuning over CPL in polymer-based materials remains challenging due to the difficulty in regulating chiral structures.Herein,visualized full-color CPL is achieved by doping red,green,and blue quantum dots(QDs)into reconfigurable blue phase liquid crystal elastomers(BPLCEs).In contrast to the CPL signal observed in cholesteric liquid crystal elastomers(CLCEs),the chiral 3D cubic superstructure of BPLCEs induces an opposite CPL signal.Notably,this effect is entirely independent of photonic bandgaps(PBGs)and results in a high glum value,even without matching between PBGs and the emission bands of QDs.Meanwhile,the lattice structure of the BPLCEs can be reversibly switched via mechanical stretching force,inducing on-off switching of the CPL signals,and these variations can be further fixed using dynamic disulfide bonds in the BPLCEs.Moreover,the smart polymer-based CPL systems using the BPLCEs for anti-counterfeiting and information encryption have been demonstrated,suggesting the great potential of the BPLCEs-based CPL active materials.
      原文链接:
    • 国家科技期刊平台
    • NETL
    • NSTL
    • 万方数据