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2024

Record 1 of

Title:Rapid and non-destructive identification of plastic particles through THz technology and machine learning

Author Full Names:Zhang, Min(1); Peng, Zhongze(1); Xu, Xiaoguang(3); Xie, Xinru(1); Liu, Yong(1); Song, Qi(2)
Source Title:Infrared Physics and Technology
Language:English
Document Type:Journal article (JA)
Abstract:For fast and accurate non-destructive differentiation of plastic pellets with similar appearance during import and export inspections, as well as for quality control purposes. Terahertz technology offers a non-destructive analysis approach for samples from diverse fields. By integrating deep learning algorithms with terahertz time-domain spectroscopy (THz-TDS) and linear discriminant analysis (LDA), it is possible to establish a highly accurate terahertz spectroscopy qualitative identification model. Additionally, the incorporation of principal component analysis (PCA) enables the application of this model to higher dimensional data. Notable differences in absorption coefficient, phase difference, and refractive index are observed among different plastic particles. The implementation of this rapid, accurate, and non-destructive detection method can greatly facilitate the testing and identification of plastic particles in customs and quality inspection departments. ? 2024 Elsevier B.V.
Affiliations:(1) Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, The State Key Laboratory of Transient Optics and Photonics, Shenzhen University, Shenzhen & Xi'an, China; (2) Shandong Key Laboratory of Optical Communication Science and Technology, School of Physics Science and Information Technology, Liaocheng University, Liaocheng, China; (3) Shenzhen Academy of Inspection and Quarantine, Shenzhen, China
Publication Year:2024
Volume:140
Article Number:105350
DOI Link:10.1016/j.infrared.2024.105350
數(shù)據(jù)庫(kù)ID（收錄號(hào)）:20242116115747
Record 2 of

Title:Highly sensitive Ga2O3 MSM solar-blind UV photodetector with impact ionization gain

Author Full Names:Wan, Qiyi(1,2); Zhang, Anzhen(1,2); Cao, Weiwei(1,3); Bai, Yonglin(1,2); Wang, Bo(1,2); Cheng, Hang(1,2); Wang, Gang(1,2)
Source Title:Optics Express
Language:English
Document Type:Journal article (JA)
Abstract:In this study, a (400) crystal-oriented β-Ga2O3 thin film with a thickness of approximately 400 nm was grown on a c-plane sapphire substrate using atomic layer deposition. Schottky contact-type metal-semiconductor-metal solar-blind ultraviolet detectors with an Au/Ni/Ga2O3/Ni/Au structure were fabricated on the epitaxial thin films. The Schottky barrier height is about 1.1 eV. The device exhibited a high responsivity of up to 800 A/W, and a detectivity of 6 × 1014 Jones while maintaining a relatively fast response speed with a rise time of 4 ms and a fall time of 12 ms. The photo-to-dark current ratio was greater than 103, and the external quantum efficiency exceeded 103, indicating a significant gain in the device. Through the analysis of TCAD simulation and experimental results, it is determined that the impact ionization at the edge of the MSM electrode and channel contact is the main source of gain. Barrier tunneling effects and the photoconductive effect due to different carrier mobilities were not the primary reasons for the gain. ? 2024 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement.
Affiliations:(1) Key Laboratory for Space Science Low Light Level Detection Technology, Xi’an Institute of Optics and Precision Mechanics (XIOPM), Chinese Academy of Sciences (CAS), Shaanxi, Xi’an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China; (3) Key Laboratory for Physical Electronics and Devices, the Ministry of Education, Shaanxi Key Lab of Information Photonic Technique, Xi’an Jiaotong University, Xi’an; 710049, China
Publication Year:2024
Volume:32
Issue:18
Start Page:32322-32335
DOI Link:10.1364/OE.531784
數(shù)據(jù)庫(kù)ID（收錄號(hào)）:20243616997102
Record 3 of

Title:Goji Disease and Pest Monitoring Model Based on Unmanned Aerial Vehicle Hyperspectral Images

Author Full Names:Zhao, Ruixin(1,2,3); Zhang, Biyun(4); Zhang, Chunmin(1,2,3); Chen, Zeyu(1,2,3,5); Chang, Ning(1,2,3,5); Zhou, Baoyu(6); Ke, Ke(1,2,3); Tang, Feng(1,2,3)
Source Title:Sensors
Language:English
Document Type:Journal article (JA)
Abstract:Combining near-earth remote sensing spectral imaging technology with unmanned aerial vehicle (UAV) remote sensing sensing technology, we measured the Ningqi No. 10 goji variety under conditions of health, infestation by psyllids, and infestation by gall mites in Shizuishan City, Ningxia Hui Autonomous Region. The results indicate that the red and near-infrared spectral bands are particularly sensitive for detecting pest and disease conditions in goji. Using UAV-measured data, a remote sensing monitoring model for goji pest and disease was developed and validated using near-earth remote sensing hyperspectral data. A fully connected neural network achieved an accuracy of over 96.82% in classifying gall mite infestations, thereby enhancing the precision of pest and disease monitoring in goji. This demonstrates the reliability of UAV remote sensing. The pest and disease remote sensing monitoring model was used to visually present predictive results on hyperspectral images of goji, achieving data visualization. ? 2024 by the authors.
Affiliations:(1) School of Physics, Xi’an Jiaotong University, Xi’an; 710049, China; (2) The Institute of Space Optics, Xi’an Jiaotong University, Xi’an; 710049, China; (3) Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi’an Jiaotong University, Ministry of Education, Xi’an; 710049, China; (4) BA Trading (Guangzhou) Co., Ltd., Guangzhou; 510000, China; (5) Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an; 710119, China; (6) Ningxia Bing He Technology Co., Ltd., Shizuishan; 753099, China
Publication Year:2024
Volume:24
Issue:20
Article Number:6739
DOI Link:10.3390/s24206739
數(shù)據(jù)庫(kù)ID（收錄號(hào)）:20244417291225
Record 4 of

Title:High repetition frequency tunability active Q-switched all-fiber laser by multi-gain sub-rings smoothing multipeak pulse and suppressing ASE self-saturation

Author Full Names:Chen, Xuechun(1,2,3,4); Wang, Nan(1,2,3,4); He, Chaojian(2,3); Xu, Shuang(2,3,4); Ning, Chaoyu(2,3,4); Li, Xinyao(2,3,4); Dong, Zhiyong(2,3); Yang, Yingying(2,3); Yang, Guowen(1); Lin, Xuechun(2,3,4)
Source Title:Optics Express
Language:English
Document Type:Journal article (JA)
Abstract:This paper provides a method to effectively suppress the severe ASE self-saturation when achieving high repetition frequency tunability with high output power and narrow pulse width in active Q-switched all-fiber lasers. By studying the regularity of the system’s multi-stable state, we first ensured that the laser system operated in a steady state. Then output avoids uneven distribution of pulse energy or missing pulses due to period bifurcation state or chaos state. By adding multiple gain sub-rings within the cavity, the sub-ring structure itself indirectly mitigates the ASE self-saturation while smoothing the pulse. The method will avoid the severe power loss caused by traditional smoothing methods by adjusting the AOM rising edge time. It will also avoid lowering the ASE lasing threshold at high repetition frequency. Meanwhile, the intra-cavity backward ASE can be effectively absorbed by inserting the gain fiber in the sub-rings to directly mitigate the ASE self-saturation. The system’s continuously adjustable repetition frequency can be as high as over 300 kHz. It ensures that output power above the watt level and a ? 2024 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement.
Affiliations:(1) State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an; 710119, China; (2) Laboratory of All-Solid-State Light Sources, Institute of Semiconductors, Chinese Academy of Sciences, Beijing; 100083, China; (3) Engineering Technology Research Center of All-Solid-State Lasers Advanced Manufacturing, Beijing; 100083, China; (4) College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing; 101407, China
Publication Year:2024
Volume:32
Issue:2
Start Page:2124-2131
DOI Link:10.1364/OE.515391
數(shù)據(jù)庫(kù)ID（收錄號(hào)）:20240415421892
Record 5 of

Title:Review of the baffle technology application

Author Full Names:Wenlong, He(1,2); Shangmin, Lin(1,2,3); Yunqiang, Lai(1,2); Dandan, Ma(1,4); Jiangtao, Wang(1,2); Zhen, Wang(1); Xuan, Zhang(1,4); Yu, Jin(1,2)
Source Title:Proceedings of SPIE - The International Society for Optical Engineering
Language:English
Document Type:Conference article (CA)
Conference Title:2024 Applied Optics and Photonics China: Optical Design and Manufacturing, AOPC 2024
Conference Date:July 23, 2024 - July 26, 2024
Conference Location:Beijing, China
Conference Sponsor:Chinese Society for Optical Engineering (CSOE)
Abstract:With the rapid development of space optical technology, the demand for the sensitivity of the optical system has increased, and the corresponding requirements for the suppression ability of stray light has become more critical. As an important part of the optical system to suppress stray light, the suppression effect of the baffle affects the final imaging quality of the entire optical system, and is currently developing in the direction of diversification, high efficiency, and light miniaturization. This paper elaborates the principles and application scenarios of various structural types of baffle, and analyses their applicability and limitations. According to the characteristics of various lens shield structures, they are divided into classical structure, reflective type, deployable type, honeycomb type and venetian blind type, and the characteristics and application fields of various structural forms of baffle are introduced. The research progress of light shields in recent years was introduced from the aspects of structural characteristics, suppression capacity, and application scenarios, and the advantages and disadvantages of various structures and the direction of improvement were discussed. Finally, the development direction of different structural forms of light shields is prospected. ? 2024 SPIE.
Affiliations:(1) Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China; (2) University of Chinese Academy of Sciences, School of Optoelectronics), Beijing, China; (3) Xi’an Space Sensor Optical Technology Engineering Research Center, Xi'an, China; (4) Xi’an Technological University, School of Opto-electronical Engineering), Xi'an, China
Publication Year:2024
Volume:13497
Article Number:134970I
DOI Link:10.1117/12.3048218
數(shù)據(jù)庫(kù)ID（收錄號(hào)）:20250117640641
Record 6 of

Title:Hierarchical existential prior based on expanded pseudo-label for crack detection

Author Full Names:Wang, Nan(1); Fang, Jie(2); Yin, Jianfu(3); Cao, Xiaoqian(4)
Source Title:Review of Scientific Instruments
Language:English
Document Type:Journal article (JA)
Abstract:Road crack detection approaches based on the image processing technique have attracted much attention during the past decade due to their convenience and efficiency, but most of them cannot achieve the expected performances due to the complex background interference and severe category imbalance of road images. This paper presents a hierarchical existential prior based on an expanded pseudo-label for crack detection. In particular, the framework contains three variants of U-Net, and each sub-network is trained by pseudo-labels generated by transforming semantic categories of non-crack pixels distributed in the neighborhoods of crack ones. Notably, the expansion degrees of labels for three sub-networks are set in hierarchical descending order. In other words, the crack samples of pseudo-labels for the latter sub-network are a subset of pseudo-labels for the former one, and we define it as an existential prior, which can optimize the network in a coarse-to-fine fashion and refine the detection result gradually. In addition, we utilize a hybrid loss consisting of IoU, SSIM, and focal loss to optimize the network in different aspects, including image-aspect, patch-aspect, and pixel aspect in the training phase, which can improve the structural representation capability of the model. In addition, we present a dynamic hyper-parameter adjustment strategy to balance the weight coefficients of different loss terms, which can enhance the robustness of the model for various practical scenes. Finally, the proposed method achieves 11.36%, 29.76%, and 26.73% in terms of Fβ on CrackTree200, Crack Forest, and ALE datasets, respectively, which sufficiently demonstrate its effectiveness and superiority. ? 2024 Author(s).
Affiliations:(1) School of Information Science and Technology, Hainan Normal University, Haikou; 571158, China; (2) School of Telecommunication and Information Engineering, Xi’an University of Posts and Telecommunications, Shaanxi, Xi’an; 710121, China; (3) Key Laboratory of Spectral Imaging Technology, Chinese Academy of Sciences, Xi’an Institute of Optics and Precision Mechanics, Shaanxi, Xi’an; 710119, China; (4) School of Electrical and Control Engineering, Shaanxi University of Science and Technology, Shaanxi, Xi’an; 710021, China
Publication Year:2024
Volume:95
Issue:12
Article Number:123706
DOI Link:10.1063/5.0217515
數(shù)據(jù)庫(kù)ID（收錄號(hào)）:20250117619529
Record 7 of

Title:Near-field characterization and failure analysis of broad-area laser diode with optical feedback

Author Full Names:Miao, Xinlian(1,2,3); Xu, Zibang(1,2,3); Tang, Song(4); Liu, Yuxian(5); Yang, Guowen(4); Yuan, Xiao(1,2,3)
Source Title:Proceedings of SPIE - The International Society for Optical Engineering
Language:English
Document Type:Conference article (CA)
Conference Title:3rd International Conference on Optics and Machine Vision, ICOMV 2024
Conference Date:January 19, 2024 - January 21, 2024
Conference Location:Nanchang, China
Abstract:Optical feedback may cause accelerated degradation as well as catastrophic optical damage in high-power Laser diodes, directly limiting their output optical power and lifetime. Near-field distribution change caused by optical feedback has high relevance with the reliability and is worthy to be studied. In this study, the influence of optical feedback on the near-field distribution of the laser diode is investigated, as well as the influence on the device failure. A feedback light testing system is successfully established, which integrates power monitoring, spectral measurement, and near-field assessment. Through an investigation into the influence of feedback light, it was observed that it induces instability in the near-field distribution, leading to temporal variations. Under conditions of strong feedback, a stable near-field peak emerged. At even higher current levels, a clear correspondence was identified between the near-field peak and the point of failure. These findings offer valuable insights for the understanding of the influence of optical feedback on the near-field distribution of the laser diode and its reliability. ? 2024 SPIE.
Affiliations:(1) College of Physics, Optoelectronics and Energy, Soochow University, Jiangsu, Suzhou; 215006, China; (2) Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province, Jiangsu, Suzhou; 215006, China; (3) Key Lab of Modern Optical Technologies of Education Ministry of China, Jiangsu, Suzhou; 215006, China; (4) Dogain Laser Technology (Suzhou) Co., Ltd., Suzhou; 215123, China; (5) State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an; 710119, China
Publication Year:2024
Volume:13179
Article Number:1317903
DOI Link:10.1117/12.3031600
數(shù)據(jù)庫(kù)ID（收錄號(hào)）:20243216830273
Record 8 of

Title:Correlated photon pairs generation with 3D integrated SiN circuit

Author Full Names:Zhu, Xiaotian(1); Wang, Changyue(2); Little, Brent E.(3); Ou, Z.Y.(1); Chu, Sai T.(1); Liang, Cui(2); Li, Xiaoying(2)
Source Title:CLEO: Science and Innovations, CLEO: S and I 2024 in Proceedings CLEO 2024, Part of Conference on Lasers and Electro-Optics
Language:English
Document Type:Conference article (CA)
Conference Title:CLEO: Science and Innovations in CLEO 2024, CLEO: S and I 2024 - Part of Conference on Lasers and Electro-Optics
Conference Date:May 5, 2024 - May 10, 2024
Conference Location:Charlotte, NC, United states
Abstract:For the photon pairs generated from SiN waveguide, the measured heralding efficiency is 18%, coincidence-to-accidental ratio is up to 149, and photon-pair rate is up to 0.6 MHz under the pump power of 2.9 mW. ? Optica Publishing Group 2024
Affiliations:(1) Department of Physics, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong; (2) College of Precision Instrument and Opto-Electronics Engineering, Key Laboratory of Opto-Electronics Information Technology, Ministry of Education, Tianjin University, Tianjin; 300072, China; (3) QXP Technology Inc., Xi'an, China
Publication Year:2024
數(shù)據(jù)庫(kù)ID（收錄號(hào)）:20244017131737
Record 9 of

Title:The role of eye movement signals in non-invasive brain-computer interface typing system

Author Full Names:Liu, Xi(1,2,3); Hu, Bingliang(1,3); Si, Yang(4,5); Wang, Quan(1,3)
Source Title:Medical and Biological Engineering and Computing
Language:English
Document Type:Journal article (JA)
Abstract:Brain-Computer Interfaces (BCIs) have shown great potential in providing communication and control for individuals with severe motor disabilities. However, traditional BCIs that rely on electroencephalography (EEG) signals suffer from low information transfer rates and high variability across users. Recently, eye movement signals have emerged as a promising alternative due to their high accuracy and robustness. Eye movement signals are the electrical or mechanical signals generated by the movements and behaviors of the eyes, serving to denote the diverse forms of eye movements, such as fixations, smooth pursuit, and other oculomotor activities like blinking. This article presents a review of recent studies on the development of BCI typing systems that incorporate eye movement signals. We first discuss the basic principles of BCI and the recent advancements in text entry. Then, we provide a comprehensive summary of the latest advancements in BCI typing systems that leverage eye movement signals. This includes an in-depth analysis of hybrid BCIs that are built upon the integration of electrooculography (EOG) and eye tracking technology, aiming to enhance the performance and functionality of the system. Moreover, we highlight the advantages and limitations of different approaches, as well as potential future directions. Overall, eye movement signals hold great potential for enhancing the usability and accessibility of BCI typing systems, and further research in this area could lead to more effective communication and control for individuals with motor disabilities. Graphical Abstract: This article delves into three pivotal components of the BCI typing system: data, algorithms, and interaction. The system leverages eye movement and EEG data as inputs, which are processed through algorithms for data fusion, feature extraction, and classification to yield output results. Furthermore, it facilitates real-time interaction by providing visual feedback via an efficient user interface. (Figure presented.) ? International Federation for Medical and Biological Engineering 2024.
Affiliations:(1) Key Laboratory of Spectral Imaging Technology, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China; (3) Key Laboratory of Biomedical Spectroscopy of Xi’an, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an; 710119, China; (4) Department of Neurology, Sichuan Academy of Medical Science and Sichuan Provincial People’s Hospital, Chengdu; 611731, China; (5) University of Electronic Science and Technology of China, Chengdu; 611731, China
Publication Year:2024
Volume:62
Issue:7
Start Page:1981-1990
DOI Link:10.1007/s11517-024-03070-7
數(shù)據(jù)庫(kù)ID（收錄號(hào)）:20241215789908
Record 10 of

Title:Spatiotemporal vectorial structured light that dynamically varies on higher-order Poincaré sphere

Author Full Names:Liang, Yize(1,2,3,4); Xi, Teli(1,2); Cao, Shuai(1,2); Liu, Lixian(1,2); Liu, Fei(1,2); Wan, Zhenyu(3,4); Wang, Jian(3,4); Shao, Xiaopeng(5)
Source Title:Optics Express
Language:English
Document Type:Journal article (JA)
Abstract:Higher-order structured light beams, including optical vortex (OV) beams and vector beams, which can be geometrically represented as points on higher-order Poincaré spheres (HOPSs), have been widely exploited in applications such as optical trapping, optical communications, optical metrology, quantum optics, to name a few. To date, traditional approaches to producing such higher-order structured light beams deal with controllable generation of different static points on HOPS. In this paper, we propose and demonstrate the generation of spatiotemporal structured light beams that dynamically vary on HOPS. By superposing OV beams with different frequencies, spatiotemporal vectorial structured light beams that dynamically vary along latitude lines, meridians, and other trajectories on the first order Poincaré sphere are generated in simulation. Our work may give new insight into arbitrarily and ultrafast tailoring higher-order structured light beams. ? 2024 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement.
Affiliations:(1) Xi’an Key Laboratory of Computational Imaging, School of Optoelectronic Engineering, Xidian University, Xi’an; 710071, China; (2) Advanced Optoelectronic Imaging and Device Laboratory, Hangzhou Institute of Technology, Xidian University, Hangzhou; 311200, China; (3) Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Hubei, Wuhan; 430074, China; (4) Optics Valley Laboratory, Hubei, Wuhan; 430074, China; (5) Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an; 710119, China
Publication Year:2024
Volume:32
Issue:16
Start Page:28413-28428
DOI Link:10.1364/OE.525629
數(shù)據(jù)庫(kù)ID（收錄號(hào)）:20243216825749
Record 11 of

Title:Correlated photon pairs generation with 3D integrated SiN circuit

Author Full Names:Zhu, Xiaotian(1); Wang, Changyue(2); Little, Brent E.(3); Ou, Z.Y.(1); Chu, Sai T.(1); Liang, Cui(2); Li, Xiaoying(2)
Source Title:2024 Conference on Lasers and Electro-Optics, CLEO 2024
Language:English
Document Type:Conference article (CA)
Conference Title:2024 Conference on Lasers and Electro-Optics, CLEO 2024
Conference Date:May 7, 2024 - May 10, 2024
Conference Location:Charlotte, NC, United states
Conference Sponsor:American Elements; American Physical Society, Division of Laser Science; et al.; IEEE Photonics Society; IPG Photonics; LIGENTEC
Abstract:For the photon pairs generated from SiN waveguide, the measured heralding efficiency is 18%, coincidence-to-accidental ratio is up to 149, and photon-pair rate is up to 0.6 MHz under the pump power of 2.9 mW. ? Optica Publishing Group 2024 ? 2024 The Author(s)
Affiliations:(1) Department of Physics, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong; (2) College of Precision Instrument and Opto-Electronics Engineering, Key Laboratory of Opto-Electronics Information Technology, Ministry of Education, Tianjin University, Tianjin; 300072, China; (3) QXP Technology Inc., Xi'an, China
Publication Year:2024
DOI Link:10.1364/cleo_at.2024.jw2a.165
數(shù)據(jù)庫(kù)ID（收錄號(hào)）:20244917467969
Record 12 of

Title:Metasurfaces-Empowered Optical Micromanipulation (Invited)

Author Full Names:Xu, Xiaohao(1,2); Gao, Wenyu(1,2); Li, Tianyue(3,4); Shao, Tianhua(3,4); Li, Xingyi(5); Zhou, Yuan(1,2); Gao, Geze(3,4); Wang, Guoxi(1,2); Yan, Shaohui(1,2); Wang, Shuming(3,4); Yao, Baoli(1,2)
Source Title:Guangxue Xuebao/Acta Optica Sinica
Language:Chinese
Document Type:Journal article (JA)
Abstract:Significance Optical micromanipulation utilizes optical force to dynamically control particles, which has the characteristics of non-contact and can be operated in a vacuum environment. Since the invention of optical tweezers in the 1980s, the field has experienced rapid development and has given rise to many emerging research directions, such as holographic optical tweezers, near-field evanescent wave optical tweezers, fiber optic tweezers, optoelectronic tweezers, and photo-induced temperature field optical tweezers, providing rich and powerful tools for fields such as biology, chemistry, nanoscience, and quantum technology. These methods can not only capture, separate, and transport small objects but also allow more precise manipulation, such as the rotation of small objects. However, traditional manipulation methods rely on tightly focused local light, greatly limiting the action range of optical force. In addition, in order to generate a structured light field, larger optical components such as spatial light modulators are usually required, making it difficult to miniaturize and integrate the optical manipulation system. In recent years, metasurfaces have emerged as integrated devices composed of subwavelength nanoantennas, promising new opportunities for optical micromanipulation. This ultra-thin artificial microstructure device can flexiblely control multiple degrees of freedom such as amplitude, phase, and polarization of light, by specially designing the geometric shape, size, and material of its own micro/nanostructure. Compared with traditional optical components such as liquid crystal spatial light modulators, gratings, and lenses, metasurfaces exhibit higher operating bandwidth, structural compactness, and integration. With the merits of miniaturization, integration, and excellent performance in light tailoring, optical metasurfaces have been extensively incorporated into the realm of optical micromanipulation. Especially, owing to their peculiar photomechanical properties, the metasurfaces hold the ability to be actuated by light fields, paving the way to the next generation of light-driven artificial micro-robots. The fast development of this subject indicates that the time is now ripe to overview recent progress in this cross-field. Progress We summarized principles of optical micromanipulation and metasurfaces (Fig. 1) and overviewed meta-manipulation devices, including metasurface-based optical tweezers (Fig. 2), tractor beams (Fig. 5), multifunctional micromanipulation systems (Fig. 3), and metamachines (Figs. 7 and 8). Furthermore, we provided a detailed discussion of novel mechanical effects, such as topological light manipulation, which stems from the topological characteristics of nanostructures (Fig. 6). Conclusions and Prospects We review the cutting-edge developments in the field of optical micromanipulation based on metasurfaces. The metasurface-based micromanipulation technology is expected to evolve toward higher temporal resolution, higher spatial accuracy, and lower manipulation power. To this end, more urgent requirements have been imposed on the underlying design scheme and experimental preparation standards of the metasurface. Although the introduction of metasurfaces has benefited micromanipulation systems and significantly reduced their sizes, there is still much room for further development and improvement in wide bands, multi-dimensional responses, and device thresholds. In terms of micromanipulation systems, the subwavelength-scale structure of metasurfaces will continue to be a key focus of research. Especially in the field of topological light manipulation, it is expected to further expand its research scope, combining non-Abelitan, non-Hermitian, and nonlinear effects to discover new physical phenomena. In the fields of biology and chemistry, metasurface technology is expected to be flexibly applied on smaller scales, even achieving manipulation of single molecule-level objects. This technology is expected to be further applied to the fields such as battery quality inspection and targeted therapy, bringing changes to the basic research and practical applications of energy and life sciences. Specifically, in the development of ultrafast optics, metasurfaces are gradually exhibiting unique advantages. Nanoscale superlattice enables high-resolution spectral measurements, and the design of nonlinear superlattice surfaces can be used to enhance nonlinear effects or generate high-order harmonics, making high time resolution transient micromanipulation technology possible. Overall, the technological evolution from traditional optical micromanipulation to meta-manipulation will continue to drive the vigorous development of nanophotonics. This technological paradigm not only meets the needs of various basic research but also arouses more innovative applications, opening up new prospects for branched sciences and technologies. ? 2024 Chinese Optical Society. All rights reserved.
Affiliations:(1) State Key Laboratory of Transient Optics and Photonics, Xi an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Shaanxi, Xi an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China; (3) National Laboratory of Solid State Microstructures, School of Physics, Nanjing University, Jiangsu, Nanjing; 210093, China; (4) Collaborative Innovation Center for Advanced Microstructures, Nanjing University, Jiangsu, Nanjing; 210093, China; (5) College of Optical Science and Engineering, Zhejiang University, Zhejiang, Hangzhou; 310027, China
Publication Year:2024
Volume:44
Issue:5
Article Number:0500001
DOI Link:10.3788/AOS231748
數(shù)據(jù)庫(kù)ID（收錄號(hào)）:20241215789339

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