|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Optical vortices 30 years on:OAM manipulation from topological charge to multiple singularities显示文摘Thirty years ago,Coullet et al.proposed that a special optical field exists in laser cavities bearing some analogy with the superfluid vortex.Since then,optical vortices have been widely studied,inspired by the hydrodynamics sharing similar mathematics.Akin to a fluid vortex with a central flow singularity,an optical vortex beam has a phase singularity with a certain topological charge,giving rise to a hollow intensity distribution.Such a beam with helical phase fronts and orbital angular momentum reveals a subtle connection between macroscopic physical optics and microscopic quantum optics.These amazing properties provide a new understanding of a wide range of optical and physical phenomena,including twisting photons,spin–orbital interactions,Bose-Einstein condensates,etc.,while the associated technologies for manipulating optical vortices have become increasingly tunable and flexible.Hitherto,owing to these salient properties and optical manipulation technologies,tunable vortex beams have engendered tremendous advanced applications such as optical tweezers,high-order quantum entanglement,and nonlinear optics.This article reviews the recent progress in tunable vortex technologies along with their advanced applications. | Yijie Shen Xuejiao Wang Zhenwei Xie Changjun Min Xing Fu Qiang Liu Mali Gong Xiaocong Yuan | 2019 | Light(Science & Applications)2019，8，1： | 77 |
| 2 | Tunable/Reconfigurable Metasurfaces: Physics and Applications显示文摘Metasurfaces,ultrathin metamaterials constructed by planar meta-atoms with tailored electromagnetic(EM)responses,have attracted tremendous attention due to their exotic abilities to freely control EM waves.With active elements incorporated into metasurface designs,one can realize tunable and/or reconfgurable metadevices with functionalities controlled by external stimuli,opening a new platform to dynamically manipulate EM waves.In this article,we briefy review recent progress on tunable/reconfgurable metasurfaces,focusing on their working mechanisms and practical applications.We frst describe available approaches,categorized into diferent classes based on external stimuli applied,to realize homogeneous tunable/reconfgurable metasurfaces,which can ofer uniform manipulations on EM waves.We next summarize recent achievements on inhomogeneous tunable/reconfgurable metasurfaces with constitutional meta-atoms locally tuned by external knobs,which can dynamically control the wave-fronts of EM waves.We conclude this review by presenting our own perspectives on possible future directions and existing challenges in this fast developing feld. | Qiong He Shulin Sun Lei Zhou | 2019 | Research2019，，1： | 26 |
| 3 | Laser-driven programmable non-contact transfer printing of objects onto arbitrary receivers via an active elastomeric microstructured stamp显示文摘Transfer printing, as an important assembly technique, has attracted much attention due to its valuable merits to develop novel forms of electronics such as stretchable inorganic electronics requiring the heterogeneous integration of inorganic materials with soft elastomers. Here, we report on a laser-driven programmable non-contact transfer printing technique via a simple yet robust design of active elastomeric microstructured stamp that features cavities filled with air and embedded under the contacting surface, a micro-patterned surface membrane that encapsulates the air cavities and a metal layer on the inner-cavity surfaces serving as the laser-absorbing layer. The micro-patterned surface membrane can be inflated dynamically to control the interfacial adhesion, which can be switched from strong state to weak state by more than three orders of magnitude by local laser heating of the air in the cavity with a temperature increase below 100℃. Theoretical and experimental studies reveal the fundamental aspects of the design and fabrication of the active elastomeric microstructured stamp and the operation of non-contact transfer printing. Demonstrations in the programmable transfer printing of micro-scale silicon platelets and micro-scale LED chips onto various challenging receivers illustrate the extraordinary capabilities for deterministic assembly that are difficult to address by existing printing schemes, thereby creating engineering opportunities in areas requiring the heterogeneous integration of diverse materials such as curvilinear electronics and Micro LED displays. | Hongyu Luo Chengjun Wang Changhong Linghu Kaixin Yu Chao Wang Jizhou Song | 2020 | National Science Review2020，7，2： | 9 |
| 4 | Tunable and scalable broadband metamaterial absorber involving VO2-based phase transition显示文摘Optical absorbers with dynamic tuning features are able to flexibly control the absorption performance, which offers a good platform for realizing optical switching, filtering, modulating, etc. Here, we propose a thermally tunable broadband absorber applying a patterned plasmonic metasurface with thermo-chromic vanadium dioxide (VO2) spacers. An actively tunable absorption bandwidth and peak resonant wavelength in the region from the near-to mid-infrared (NMIR) are simultaneously achieved with the insulating.metallic phase transition ofVO2·Moreover, the scalable unit cell,which is composed of multi-width sub-cells, provides a new freedom to further manipulate (i.e., broaden or narrow) the absorption bandwidth while maintaining a high relative absorption bandwidth and efficient absorbance at the same time. For both transverse-electric and transverse-magnetic polarizations, the proposed nanostructure exhibits a high absorption over a wide angular range up to 60°.This method holds a promising potential for versatile utilizations in optical integrated devices,NMIR photodetection, thermal emitters, smart temperature control systems,and so fbrth. | Lei Lei Fei Lou Keyu Tao Haixuan Huang Xin Cheng Ping Xu | 2019 | Photonics Research2019，7，7： | 8 |
| 5 | Analysis of Mechanically Tunable Frequency Selective Surfaces显示文摘AnalysisofMechanicalyTunableFrequencySelectiveSurfacesZhangWenxun&SongHongxinStateKeyLab.ofMilimeterWaves,SoutheastUniversit... | Zhang, Wenxun Song, Hongxin | 1997 | Journal of Systems Engineering and Electronics1997，8，4： | 6 |
| 6 | Design of a tunable mass damper for mitigating vibrations in milling of cylindrical parts显示文摘Milling the free-end of cylindrical parts, which are vertically fixed on the machine table,often suffers from large chatter vibrations. This kind of phenomenon is harmful to the cutting process. Therefore, it is of great importance to develop means to suppress these undesirable chatters.This paper proposes a new idea for designing a tunable mass damper(TMD) to reduce vibrations in milling of cylindrical parts. Frequency response function(FRF) of the milling system is derived to comprehensively reveal the influence of both the dynamic response of the machine tools and the TMD. Critical axial depth of cut, which is usually used to characterize the process stability, is formulated by considering the FRFs of both the milling system itself and the TMD. Maximization of critical axial depth of cut is taken as objective function, while kernel dynamic parameters of TMD,which are involved in the derived expression of critical axial depth of cut, are extracted as designable variables. Optimization procedure is carried out to adjust the parameters of TMD by using sequential quadratic programming algorithm. A series of experiments with a designed passive TMD validate that the design has a good performance in reducing vibrations and improving stability of milling process. | Heng YUAN Min WAN Yun YANG | 2019 | Chinese Journal of Aeronautics2019，32，3： | 6 |
| 7 | Dispersion compensation experiment on 19 ps pulse width over 133 km single mode fiber with tunable chirp and wavelength gratings显示文摘A novel method utilizing a cantilever beam to tune the center wavelength and the linear chirp of fiber gratings is presented. Based on this method, the center wavelength and the chirp of a 10cm uniform fiber grating are tuned to compensate for the dispersion of 19 ps pulse width after 133 km transmission. Experimental results show that the effect of dispersion compensation is favorable. | 简水生 赵玉成 魏道平 李唐军 陈根祥 秦玉文 | 1999 | Science China(Technological Sciences)1999，42，2： | 5 |
| 8 | Active terahertz beam steering based on mechanical deformation of liquid crystal elastomer metasurface显示文摘Active metasurfaces are emerging as the core of next-generation optical devices with their tunable optical responses and flat-compact topography.Especially for the terahertz band,active metasurfaces have been developed as fascinating devices for optical chopping and compressive sensing imaging.However,performance regulation by changing the dielectric parameters of the integrated functional materials exhibits severe limitations and parasitic losses.Here,we introduce a C-shape-split-ring-based phase discontinuity metasurface with liquid crystal elastomer as the substrate for infrared modulation of terahertz wavefront.Line-focused infrared light is applied to manipulate the deflection of the liquid crystal elastomer substrate,enabling controllable and broadband wavefront steering with a maximum output angle change of 22°at 0.68THz.Heating as another control method is also investigated and compared with infrared control.We further demonstrate the performance of liquid crystal elastomer metasurface as a beam steerer,frequency modulator,and tunable beam splitter,which are highly desired in terahertz wireless communication and imaging systems.The proposed scheme demonstrates the promising prospects of mechanically deformable metasurfaces,thereby paving the path for the development of reconfigurable metasurfaces. | Xiaolin Zhuang Wei Zhang Kemeng Wang Yangfan Gu Youwen An Xueqian Zhang Jianqiang Gu Dan Luo Jiaguang Han Weili Zhang | 2023 | Light(Science & Applications)2023，12，1： | 4 |
| 9 | Gain in polycrystalline Nd-doped alumina: leveraging length scales to create a new class of high-energy, short pulse, tunable laser materials显示文摘Traditionally accepted design paradigms dictate that only optically isotropic(cubic)crystal structures with high equilibrium solubilities of optically active ions are suitable for polycrystalline laser gain media.The restriction of symmetry is due to light scattering caused by randomly oriented anisotropic crystals,whereas the solubility problem arises from the need for sufficient active dopants in the media.These criteria limit material choices and exclude materials that have superior thermo-mechanical properties than state-of-the-art laser materials.Alumina(Al_(2)O_(3))is an ideal example;it has a higher fracture strength and thermal conductivity than today’s gain materials,which could lead to revolutionary laser performance.However,alumina has uniaxial optical proprieties,and the solubility of rare earths(REs)is two-to-three orders of magnitude lower than the dopant concentrations in typical RE-based gain media.We present new strategies to overcome these obstacles and demonstrate gain in a RE-doped alumina(Nd:Al_(2)O_(3))for the first time.The key insight relies on tailoring the crystallite size to other important length scales—the wavelength of light and interatomic dopant distances,which minimize optical losses and allow successful Nd doping.The result is a laser gain medium with a thermo-mechanical figure of merit of R_(s)~19,500 Wm^(−1) a 24-fold and 19,500-fold improvements over the high-energy-laser leaders Nd:YAG(R_(s)~800Wm^(−1))and Nd:Glass(R_(s)~1Wm^(−1)),respectively.Moreover,the emission bandwidth of Nd:Al_(2)O_(3) is broad:~13 THz.The successful demonstration of gain and high bandwidth in a medium with superior R_(s) can lead to the development of lasers with previously unobtainable highpeak powers,short pulses,tunability,and high-duty cycles. | Elias H.Penilla Luis F.Devia-Cruz Matthew A.Duarte Corey L.Hardin Yasuhiro Kodera Javier E.Garay | 2018 | Light(Science & Applications)2018，7，1： | 4 |
| 10 | Optical beam steering by using tunable,narrow-linewidth butt-coupled hybrid lasers in a silicon nitride photonics platform显示文摘Chip-scale,tunable narrow-linewidth hybrid integrated diode lasers based on quantum-dot RSOAs at 1.3μm are demonstrated through butt-coupling to a silicon nitride photonic integrated circuit.The hybrid laser linewidth is around 85 k Hz,and the tuning range is around 47 nm.Then,a fully integrated beam steerer is demonstrated by combining the tunable diode laser with a waveguide surface grating.Our system can provide beam steering of 4.1°in one direction by tuning the wavelength of the hybrid laser.Besides,a wavelength-tunable triple-band hybrid laser system working at^1,~1.3,and^1.55μm bands is demonstrated for wide-angle beam steering in a single chip. | YEYU ZHU SIWEI ZENG LIN ZHU | 2020 | Photonics Research2020，8，3： | 4 |
| 11 | Single crystal β-Ga_2O_3: Cr grown by floating zone technique and its optical properties显示文摘β-Ga2O3: Cr single crystals were grown by floating zone technique. Absorption spectra and fluorescence spectra were measured at room temperature. The values of field splitting parameter Dq and Racah parameter B were obtained by the peak values of absorption spectra. The value 10Dq/B=23.14 manifests that in β-Ga2O3 crystals Cr3+ ions are influenced by low energy crystal field. After high temperature annealing in air, the Cr3+ intrinsic emission was enhanced and the green lumines-cence disappeared. The strong and broad 691 nm emission was obtained at 420 nm excitation due to the electron transition occurred from 4T2 to 4A2. The studies manifest that the β-Ga2O3 crystals have the potential application for tunable laser. | ZHANG JunGang1, 2, LI Bin3, XIA ChangTai1, XU Jun1, DENG Qun4, XU XiaoDong1, WU Feng1, XU WuSheng4, SHI HongSheng4, PEI GuangQing1, 2 & WU YongQing1,2 1 Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China 2 Graduate School of the Chinese Academy of Sciences, Beijing 100039, China 3 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China 4 GE (China) Research and Development Center Co. Ltd., Shanghai 201203, China | 2007 | Science China(Technological Sciences)2007，50，1： | 4 |
| 12 | High-throughput microfabrication of axially tunable helices显示文摘Helical structures exhibit novel optical and mechanical properties and are commonly used in different fields such as metamaterials and microfluidics. A few methods exist for fabricating helical microstructures, but none of them has the throughput or flexibility required for patterning a large surface area with tunable pitch. In this paper, we report a method for fabricating helical structures with adjustable forms over large areas based on multiphoton polymerization(MPP) using single-exposure, three dimensionally structured, self-accelerating, axially tunable light fields. The light fields are generated as a superposition of high-order Bessel modes and have a closed-form expression relating the design of the phase mask to the rotation rate of the beam. The method is used to fabricate helices with different pitches and handedness in the material SU-8. Compared to point-by-point scanning, the method reported here can be used to reduce fabrication time by two orders of magnitude, paving the way for adopting MPP in many industrial applications. | He Cheng Pooria Golvari Chun Xia Mingman Sun Meng Zhang Stephen M.Kuebler Xiaoming Yu | 2022 | Photonics Research2022，10，2： | 4 |
| 13 | Fe3O4 nanoparticles as a saturable absorber for a tunable Q-switched dysprosium laser around 3μm显示文摘We demonstrate for the first time to our knowledge the use of Fe3O4 nanoparticles for Q-switching a tunable midinfrared(Mid-IR)Dy^3+-doped ZBLAN fiber laser around 3μm.The Q-switcher was fabricated by depositing the prepared Fe3O4 nanoparticles solution onto an Au mirror.Its nonlinear optical response was characterized using a mode locked Ho^3+/Pr^3+-codoped ZBLAN fiber laser at 2.87μm,and showed a modulation depth of 11.9%as well as a saturation intensity of 1.44 MW/cm^2.Inserting the device into a tunable Dy^3+-doped ZBLAN fiber laser,stable Q-switched pulses within the tunable range of 2812.4-3031.6 nm were obtained.When tuning the wavelength to 2931.2 nm,a maximum Q-switching output power of 111.0 mW was achieved with a repetition rate of 123.0 kHz and a pulse width of 1.25μs.The corresponding pulse energy was 0.90μJ.This demonstration suggests that Fe3O4 nanoparticles are a promising broadband saturable absorption material for mid-infrared operation. | JIAN YANG JIYI HU HONGYU LUO JIANFENG LI JISHU LIU XIAOHUI LI YONG LIU | 2020 | Photonics Research2020，8，1： | 4 |
| 14 | Tunable oxygen vacancy concentration in vanadium oxide as mass-produced cathode for aqueous zinc-ion batteries显示文摘Oxygen vacancy(Vö)is important in the modification of electrode for rechargeable batteries.However,due to the scarcity of suitable preparation strategy with controllable Vöincorporation,the impact of Vöconcentration on the electrochemical performances remains unclear.Thus,in this work,Vö-V_(2)O_(5)-PEDOT(VöVP)with tunable Vöconcentration is achieved via a spontaneous polymerization strategy,with the capability of mass-production.The introduction of poly(2,3-dihydrothieno-1,4-dioxin)(PEDOT)not only leads to the formation of Vöin V_(2)O_(5),but it also results in a larger interlayer spacing.The as-prepared Vö-V_(2)O_(5)-PEDOT-20.3%with Vöconcentration of 20.3%(denoted as VöVP-20)is able to exhibit high capacity of 449 mAh·g^(−1) at current density of 0.2 A·g^(−1),with excellent cyclic performance of 94.3% after 6,000 cycles.It is shown in the theoretical calculations that excessive Vöin V_(2)O_(5) will lead to an increase in the band gap,which inhibits the electrochemical kinetics and charge conductivity.This is further demonstrated in the experimental results as the electrochemical performance starts to decline when Vöconcentration increases beyond 20.3%.Thus,based on this work,scalable fabrication of high-performance electrode with tunable Vöconcentration can be achieved with the proposed strategy. | Yehong Du Xinyu Wang Juncai Sun | 2021 | Nano Research2021，14，3： | 4 |
| 15 | Widely tunable,heterogeneously integrated quantum-dot O-band lasers on silicon显示文摘Heterogeneously integrated lasers in the O-band are a key component in realizring low-power optical interconnects for data centers and high-performance computing.Quantum-dot-based materials have been particularly appealing for light generation due to their ultralow lasing thresholds,small linewidth enhancement factor,and low sensitivity to reflections.Here,we present widely tunable quantum-dot lasers heterogencously integrated on silicon-on-insulator substrate.The tuning mechanism is based on Vernier dual-ring geometry,and a 47nm tuning range with 52 dB side-mode suppression ratio is observed.These parameters show an increase to 52nm and 58 dB,respectively,when an additional wavelength filter in the form of a Mach-Zehnder interferometer is added to the cavity.The Lorentzian linewidth of the lasers is measured as low as 5.3 kHz. | ADITYA MALIK JOEL GUO MINH A.TRAN GEZA KURCZVEIL DI LIAN JOHN EBOWERS | 2020 | Photonics Research2020，8，10： | 4 |
| 16 | Optically induced rotation of Rayleigh particles by arbitrary photonic spin显示文摘Optical trapping techniques hold great interest for their advantages that enable direct handling of nanoparticles. In this work, we study the optical trapping effects of a diffraction-limited focal field possessing an arbitrary photonic spin and propose a convenient method to manipulate the movement behavior of the trapped nanoparticles. In order to achieve controllable spin axis orientation and ellipticity of the tightly focused beam in three dimensions, an efficient method to analytically calculate and experimentally generate complex optical fields at the pupil plane of a high numerical aperture lens is developed. By numerically calculating the optical forces and torques of Rayleigh particles with spherical/ellipsoidal shape, we demonstrate that the interactions between the tunable photonic spin and nanoparticles lead to not only 3D trapping but also precise control of the nanoparticles' movements in terms of stable orientation, rotational orientation, and rotation frequency. This versatile trapping method may open up new avenues for optical trapping and their applications in various scientific fields. | GUANGHAO RUI YING LI SICHAO ZHOU YUSONG WANG BING GU YIPING CUI QIWEN ZHAN | 2019 | Photonics Research2019，7，1： | 4 |
| 17 | Biofilm architecture: An emerging synthetic biology target显示文摘Synthetic biologists are exploiting biofilms as an effective mechanism for producing various outputs.Metabolic optimization has become commonplace as a method of maximizing system output.In addition to production pathways,the biofilm itself contributes to the efficacy of production.The purpose of this review is to highlight opportunities that might be leveraged to further enhance production in preexisting biofilm production systems.These opportunities may be used with previously established production systems as a method of improving system efficiency further.This may be accomplished through the reduction in the cost of establishing and maintaining biofilms,and maintenance of the enhancement of product yield per unit of time,per unit of area,or per unit of required input. | Stephen J.Kassinger Monique L.van Hoek | 2020 | Synthetic and Systems Biotechnology2020，5，1： | 3 |
| 18 | Multi-wavelength colloidal quantum dot lasers in distributed feedback cavities显示文摘Lasers with multi-wavelength colloidal quantum dots(CQDs)can be achieved using complex grating structures and flexible substrate.The structure contains graduated periods and rectangular cavity fabricated through interference lithography,which acts as the distributed feedback cavity.A layer of densely packed CQD film is deposited on the cavity via spin coating technique.The performance of CQD lasers based on different distributed feedback cavities is investigated.Multi-wavelength lasing is achieved based on a flexible rectangular cavity. | Anwer HAYAT Junhua TONG Chao CHEN Lianze NIU Gohar AZIZ Tianrui ZHAI Xinping ZHANG | 2020 | Science China(Information Sciences)2020，63，8： | 3 |
| 19 | Ultralow-loss compact silicon photonic waveguide spirals and delay lines显示文摘Low-loss and compact optical waveguides are key for realizing various photonic integrated circuits with long onchip delay lines,such as tunable optical delay lines,optical coherence tomography,and optical gyroscopes.In this paper,a low-loss and compact silicon photonic waveguide spiral is proposed by introducing broadened Archimedean spiral waveguides with a tapered Euler S-bend.A 100-cm-long waveguide spiral is realized with a minimal bending radius as small as 10 μm by using a standard 220-nm-thick silicon-on-insulator foundry process,and the measured propagation loss is as low as 0.28 dB/cm.Furthermore,the present waveguide spirals are used to realize a 10-bit tunable optical delay line,which has a footprint as small as 2.2 mm × 5.9 mm and a dynamic range of 5120 ps with a fine resolution of 10 ps. | SHIHAN HONG LONG ZHANG YI WANG MING ZHANG YIWEI XIE DAOXIN DAI | 2022 | Photonics Research2022，10，1： | 3 |
| 20 | Adjusting energy level alignment between HTL and CsPbI_(2)Br to improve solar cell efficiency显示文摘Lead halide perovskites are at the forefront of optoelectronic materials due to their high absorption coefficient,tunable bandgap,long carrier diffusion length,and small exciton binding energy[1−3],yielding high-performance optoelectronic devices. | Zihan Zhang Jia Li Zhimin Fang Haipeng Xie Yongbo Yuan Chuantian Zuo Liming Ding Bin Yang | 2021 | Journal of Semiconductors2021，42，3： | 3 |
您所在的机构暂未开通此部分的功能，请联系管理员