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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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    Single-crystalline hole-transporting layers for efficient and stable organic light-emitting devices

    Gao-Da YeRan DingSu-Heng LiLei Ni...
    1341-1353页
    查看更多>>摘要：Efficient charge-carrier injection and transport in organic light-emitting devices(OLEDs)are essential to simultaneously achieving their high efficiency and long-term stability.However,the charge-transporting layers(CTLs)deposited by various vapor or solution processes are usually in amorphous forms,and their low charge-carrier mobilities,defect-induced high trap densities and inhomogeneous thickness with rough surface morphologies have been obstacles towards high-performance devices.Here,organic single-crystalline(SC)films were employed as the hole-transporting layers(HTLs)instead of the conventional amorphous films to fabricate highly efficient and stable OLEDs.The high-mobility and ultrasmooth morphology of the SC-HTLs facilitate superior interfacial characteristics of both HTL/electrode and HTL/emissive layer interfaces,resulting in a high Haacke's figure of merit(FoM)of the ultrathin top electrode and low series-resistance joule-heat loss ratio of the SC-OLEDs.Moreover,the thick and compact SC-HTL can function as a barrier layer against moisture and oxygen permeation.As a result,the SC-OLEDs show much improved efficiency and stability compared to the OLEDs based on amorphous or polycrystalline HTLs,suggesting a new strategy to developing advanced OLEDs with high efficiency and high stability.
      原文链接:
    • 国家科技期刊平台
    • NETL
    • NSTL
    • 万方数据

    Simple and robust 3D MINFLUX excitation with a variable phase plate

    Takahiro DeguchiJonas Ries
    1354-1363页
    查看更多>>摘要：MINFLUX has achieved extraordinary resolution in superresolution imaging and single fluorophore tracking.It is based on localizing single fluorophores by rapid probing with a patterned beam that features a local intensity minimum.Current implementations,however,are complex and expensive and are limited in speed and robustness.Here,we show that a combination of an electro-optical modulator with a segmented birefringent element such as a spatial light modulator produces a variable phase plate for which the phase can be scanned on the MHz timescale.Bisected or top-hat phase patterns generate high-contrast compact excitation point-spread functions for MINFLUX localization in the x,y,and z-direction,respectively,which can be scanned across a fluorophore within a microsecond,switched within 60 microseconds and alternated among different excitation wavelengths.We discuss how to compensate for non-optimal performance of the components and present a robust 3D and multi-color MINFLUX excitation module,which we envision as an integral component of a high-performance and cost-effective open-source MINFLUX.
      原文链接:
    • 国家科技期刊平台
    • NETL
    • NSTL
    • 万方数据

    Efficient and stable hybrid perovskite-organic light-emitting diodes with external quantum efficiency exceeding 40 per cent

    Lingmei KongYun LuoQianqian WuXiangtian Xiao...
    1364-1371页
    查看更多>>摘要：Light-emitting diodes(LEDs)based on perovskite semiconductor materials with tunable emission wavelength in visible light range as well as narrow linewidth are potential competitors among current light-emitting display technologies,but still suffer from severe instability driven by electric field.Here,we develop a stable,efficient and high-color purity hybrid LED with a tandem structure by combining the perovskite LED and the commercial organic LED technologies to accelerate the practical application of perovskites.Perovskite LED and organic LED with close photoluminescence peak are selected to maximize photon emission without photon reabsorption and to achieve the narrowed emission spectra.By designing an efficient interconnecting layer with p-type interface doping that provides good opto-electric coupling and reduces Joule heating,the resulting green emitting hybrid LED shows a narrow linewidth of around 30 nm,a peak luminance of over 176,000 cd m-2,a maximum external quantum efficiency of over 40％,and an operational half-lifetime of over 42,000 h.
      原文链接:
    • 国家科技期刊平台
    • NETL
    • NSTL
    • 万方数据

    Promising interlayer sensitization strategy for the construction of high-performance blue hyperfluorescence OLEDs

    Jianghui WangPeng ZouLetian ChenZhentao Bai...
    1372-1382页
    查看更多>>摘要：Multi-resonance thermally activated delayed fluorescence(MR-TADF)materials are promising candidates for organic light-emitting diodes(OLEDs)with narrow electroluminescence(EL)spectra.Current researches focus on fabricating hyperfluorescence OLEDs to improve EL effiiciencies of MR-TADF emitters by co-doping them with TADF sensitizers in a single host layer.However,in many cases,the polarity of the single host could be not suitable for both blue MR-TADF emitters and blue TADF sensitizers,resulting in broadened EL spectra in high-polar hosts or decreased EL effiiciencies in low-polar hosts.Herein,we wish to report an efficient sensitization strategy for blue MR-TADF emitters by constructing an interlayer-sensitizing configuration,in which the blue TADF sensitizers and blue MR-TADF emitters are separated into two closely aligned host layers with high polarity and low polarity,respectively.Based on this strategy,efficient blue hyperfluorescence OLEDs are realized and verified by employing various TADF sensitizers and different MR-TADF emitters,furnishing outstanding external quantum efficiencies of up to 38.8％and narrow EL spectra.These results validate the feasibility and universality of this interlayer sensitization strategy,which provides an effective alternative to high-performance blue hyperfluorescence OLEDs.
      原文链接:
    • 国家科技期刊平台
    • NETL
    • NSTL
    • 万方数据

    Color coded metadevices toward programmed terahertz switching

    Weibao HeXiang'ai ChengSiyang HuZiheng Ren...
    1383-1392页
    查看更多>>摘要：Terahertz modulators play a critical role in high-speed wireless communication,non-destructive imaging,and so on,which have attracted a large amount of research interest.Nevertheless,all-optical terahertz modulation,an ultrafast dynamical control approach,remains to be limited in terms of encoding and multifunction.Here we experimentally demonstrated an optical-programmed terahertz switching realized by combining optical metasurfaces with the terahertz metasurface,resulting in 2-bit dual-channel terahertz encoding.The terahertz metasurface,made up of semiconductor islands and artificial microstructures,enables effective all-optical programming by providing multiple frequency channels with ultrafast modulation at the nanosecond level.Meanwhile,optical metasurfaces covered in terahertz metasurface alter the spatial light field distribution to obtain color code.According to the time-domain coupled mode theory analysis,the energy dissipation modes in terahertz metasurface can be independently controlled by color excitation,which explains the principle of 2-bit encoding well.This work establishes a platform for all-optical programmed terahertz metadevices and may further advance the application of composite metasurface in terahertz manipulation.
      原文链接:
    • 国家科技期刊平台
    • NETL
    • NSTL
    • 万方数据

    Chiral quantum heating and cooling with an optically controlled ion

    Jin-Tao BuJian-Qi ZhangGe-Yi DingJia-Chong Li...
    1393-1400页
    查看更多>>摘要：Quantum heat engines and refrigerators are open quantum systems,whose dynamics can be well understood using a non-Hermitian formalism.A prominent feature of non-Hermiticity is the existence of exceptional points(EPs),which has no counterpart in closed quantum systems.It has been shown in classical systems that dynamical encirclement in the vicinity of an EP,whether the loop includes the EP or not,could lead to chiral mode conversion.Here,we show that this is valid also for quantum systems when dynamical encircling is performed in the vicinity of their Liouvillian EPs(LEPs),which include the effects of quantum jumps and associated noise—an important quantum feature not present in previous works.We demonstrate,using a Paul-trapped ultracold ion,the first chiral quantum heating and refrigeration by dynamically encircling a closed loop in the vicinity of an LEP.We witness the cycling direction to be associated with the chirality and heat release(absorption)of the quantum heat engine(quantum refrigerator).Our experiments have revealed that not only the adiabaticity breakdown but also the Landau-Zener-Stückelberg process play an essential role during dynamic encircling,resulting in chiral thermodynamic cycles.Our observations contribute to further understanding of chiral and topological features in non-Hermitian systems and pave a way to exploring the relation between chirality and quantum thermodynamics.
      原文链接:
    • 国家科技期刊平台
    • NETL
    • NSTL
    • 万方数据

    EventLFM:event camera integrated Fourier light field microscopy for ultrafast 3D imaging

    Ruipeng GuoQianwan YangAndrew S.ChangGuorong Hu...
    1401-1415页
    查看更多>>摘要：Ultrafast 3D imaging is indispensable for visualizing complex and dynamic biological processes.Conventional scanning-based techniques necessitate an inherent trade-off between acquisition speed and space-bandwidth product(SBP).Emerging single-shot 3D wide-field techniques offer a promising alternative but are bottlenecked by the synchronous readout constraints of conventional CMOS systems,thus restricting data throughput to maintain high SBP at limited frame rates.To address this,we introduce EventLFM,a straightforward and cost-effective system that overcomes these challenges by integrating an event camera with Fourier light field microscopy(LFM),a state-of-the-art single-shot 3D wide-field imaging technique.The event camera operates on a novel asynchronous readout architecture,thereby bypassing the frame rate limitations inherent to conventional CMOS systems.We further develop a simple and robust event-driven LFM reconstruction algorithm that can reliably reconstruct 3D dynamics from the unique spatiotemporal measurements captured by EventLFM.Experimental results demonstrate that EventLFM can robustly reconstruct fast-moving and rapidly blinking 3D fluorescent samples at kHz frame rates.Furthermore,we highlight EventLFM's capability for imaging of blinking neuronal signals in scattering mouse brain tissues and 3D tracking of GFP-labeled neurons in freely moving C.elegans.We believe that the combined ultrafast speed and large 3D SBP offered by EventLFM may open up new possibilities across many biomedical applications.
      原文链接:
    • 国家科技期刊平台
    • NETL
    • NSTL
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    Anisotropy-free arrayed waveguide gratings on X-cut thin film lithium niobate platform of in-plane anisotropy

    Junjie YiChangjian GuoZiliang RuanGengxin Chen...
    1416-1426页
    查看更多>>摘要：Arrayed waveguide grating is a versatile and scalable integrated light dispersion device,which has been widely adopted in various applications,including,optical communications and optical sensing.Recently,thin-film lithium niobate emerges as a promising photonic integration platform,due to its ability of shrinking largely the size of typical lithium niobate based optical devices.This would also enable multifunctional photonic integrated chips on a single lithium niobate substrate.However,due to the intrinsic anisotropy of the material,to build an arrayed waveguide grating on X-cut thin-film lithium niobate has never been successful.Here,a universal strategy to design anisotropy-free dispersive components on a uniaxial in-plane anisotropic photonic integration platform is introduced for the first time.This leads to the first implementation of arrayed waveguide gratings on X-cut thin-film lithium niobate with various configurations and high-performances.The best insertion loss of 2.4 dB and crosstalk of-24.1 dB is obtained for the fabricated arrayed waveguide grating devices.Applications of such arrayed waveguide gratings as a wavelength router and in a wavelength-division multiplexed optical transmission system are also demonstrated.
      原文链接:
    • 国家科技期刊平台
    • NETL
    • NSTL
    • 万方数据

    Time-of-flight resolved stimulated Raman scattering microscopy using counter-propagating ultraslow Bessel light bullets generation

    Shulang LinLi GongZhiwei Huang
    1427-1440页
    查看更多>>摘要：We present a novel time-of-flight resolved Bessel light bullet-enabled stimulated Raman scattering(B2-SRS)microscopy for deeper tissue 3D chemical imaging with high resolution without a need for mechanical z-scanning.To accomplish the tasks,we conceive a unique method to enable optical sectioning by generating the counter-propagating pump and Stokes Bessel light bullets in the sample,in which the group velocities of the Bessel light bullets are made ultraslow(e.g.,vg ≈ 0.1 c)and tunable by introducing programmable angular dispersions with a spatial light modulator.We theoretically analyze the working principle of the collinear multicolor Bessel light bullet generations and velocity controls with the relative time-of-flight resolved detection for SRS 3D deep tissue imaging.We have also built the B2-SRS imaging system and present the first demonstration of B2-SRS microscopy with Bessel light bullets for 3D chemical imaging in a variety of samples(e.g.,polymer bead phantoms,biological samples such as spring onion tissue and porcine brain)with high resolution.The B2-SRS technique provides a＞2-fold improvement in imaging depth in porcine brain tissue compared to conventional SRS microscopy.The method of optical sectioning in tissue using counter-propagating ultraslow Bessel light bullets developed in B2-SRS is generic and easy to perform and can be readily extended to other nonlinear optical imaging modalities to advance 3D microscopic imaging in biological and biomedical systems and beyond.
      原文链接:
    • 国家科技期刊平台
    • NETL
    • NSTL
    • 万方数据