2024
2024
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Record 145 of
Title:RGB-guided hyperspectral image super-resolution with deep progressive learning
Author Full Names:Zhang, Tao(1); Fu, Ying(1); Huang, Liwei(2); Li, Siyuan(3); You, Shaodi(4); Yan, Chenggang(5)Source Title:CAAI Transactions on Intelligence TechnologyLanguage:EnglishDocument Type:Journal article (JA)Abstract:Due to hardware limitations, existing hyperspectral (HS) camera often suffer from low spatial/temporal resolution. Recently, it has been prevalent to super-resolve a low resolution (LR) HS image into a high resolution (HR) HS image with a HR RGB (or multispectral) image guidance. Previous approaches for this guided super-resolution task often model the intrinsic characteristic of the desired HR HS image using hand-crafted priors. Recently, researchers pay more attention to deep learning methods with direct supervised or unsupervised learning, which exploit deep prior only from training dataset or testing data. In this article, an efficient convolutional neural network-based method is presented to progressively super-resolve HS image with RGB image guidance. Specifically, a progressive HS image super-resolution network is proposed, which progressively super-resolve the LR HS image with pixel shuffled HR RGB image guidance. Then, the super-resolution network is progressively trained with supervised pre-training and unsupervised adaption, where supervised pre-training learns the general prior on training data and unsupervised adaptation generalises the general prior to specific prior for variant testing scenes. The proposed method can effectively exploit prior from training dataset and testing HS and RGB images with spectral-spatial constraint. It has a good generalisation capability, especially for blind HS image super-resolution. Comprehensive experimental results show that the proposed deep progressive learning method outperforms the existing state-of-the-art methods for HS image super-resolution in non-blind and blind cases. ? 2023 The Authors. CAAI Transactions on Intelligence Technology published by John Wiley & Sons Ltd on behalf of The Institution of Engineering and Technology and Chongqing University of Technology.Affiliations:(1) School of Computer Science and Technology, Beijing Institute of Technology, Beijing, China; (2) Satellite Information Intelligent Processing and Application Research Laboratory, Beijing Institute of Remote Sensing, Beijing, China; (3) Key Laboratory of Spectral Imaging Technology, Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Xi'an, China; (4) Institute of Informatics, University of Amsterdam, Amsterdam, Netherlands; (5) School of Communication Engineering, Hangzhou Dianzi University, Hangzhou, ChinaPublication Year:2024Volume:9Issue:3Start Page:679-694DOI Link:10.1049/cit2.12256數(shù)據(jù)庫(kù)ID（收錄號(hào)）:20233014425959 -
Record 146 of
Title:Study on the construction of twisted cosine partially coherent beams and their propagation characteristics
Author Full Names:Zhang, Shaohua(1); Zhou, Yuan(2,3); Chai, Yutong(1); Qu, Jun(1)Source Title:AIP AdvancesLanguage:EnglishDocument Type:Journal article (JA)Abstract:We propose a novel Schell model source for generating twisted partially coherent beams with an initial radius of curvature, which is called a twisted flat-topped cosine Gaussian Schell-model (TFCGSM) source. The TFCGSM beam comprises a wavefront phase and a flat-top structure, with the source degree of coherence determined by two cosine functions. Based on the Huygens-Fresnel principle, the general analytical expression of the cross-spectral density function of the TFCGSM beam propagating through the paraxial ABCD optical system is derived, and then its propagation properties are studied. The results show that the conversion of the array of the beam and the non-uniform structure can be realized by adjusting the parameters in the source plane. As the propagation distance of the TFCGSM beam increases, it rotates around the axis and increases the intensity of the array distribution. Surprisingly, the initial radius of curvature can cause the beam to rotate. The unique shape and properties of the TFCGSM beam create new possibilities for optical communication and enhanced optical functions. ? 2024 Author(s).Affiliations:(1) Anhui Province Key Laboratory for Control and Applications of Optoelectronic Information Materials, Anhui Normal University, Anhui, Wuhu; 241000, China; (2) 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; (3) University of Chinese Academy of Sciences, Beijing; 100049, ChinaPublication Year:2024Volume:14Issue:2Article Number:025235DOI Link:10.1063/5.0186514數(shù)據(jù)庫(kù)ID（收錄號(hào)）:20240815596823 -
Record 147 of
Title:StreakNet-Arch: An Anti-scattering Network-based Architecture for Underwater Carrier LiDAR-Radar Imaging
Author Full Names:Li, Xuelong(1,2); An, Hongjun(1); Li, Guangying(3); Wang, Xing(3); Cheng, Guanghua(1); Sun, Zhe(1)Source Title:arXivLanguage:EnglishDocument Type:Preprint (PP)Abstract:In this paper, we introduce StreakNet-Arch, a novel signal processing architecture designed for Underwater Carrier LiDAR-Radar (UCLR) imaging systems, to address the limitations in scatter suppression and real-time imaging. StreakNet-Arch formulates the signal processing as a real-time, end-to-end binary classification task, enabling real-time image acquisition. To achieve this, we leverage Self-Attention networks and propose a novel Double Branch Cross Attention (DBC-Attention) mechanism that surpasses the performance of traditional methods. Furthermore, we present a method for embedding streak-tube camera images into attention networks, effectively acting as a learned bandpass filter. To facilitate further research, we contribute a publicly available streak-tube camera image dataset. The dataset contains 2,695,168 real-world underwater 3D point cloud data. These advancements significantly improve UCLR capabilities, enhancing its performance and applicability in underwater imaging tasks. The source code and dataset can be found at https://github.com/BestAnHongjun/StreakNet. Copyright ? 2024, The Authors. All rights reserved.Affiliations:(1) School of Artificial Intelligence, OPtics and ElectroNics (iOPEN), Northwestern Polytechnical University, Shaanxi, Xi’an; 710072, China; (2) The Institute of Artificial Intelligence (TeleAI), China Telecom Corp Ltd, Beijing; 100033, China; (3) State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics of CAS, Shaanxi, Xi’an; 710119, ChinaPublication Year:2024DOI Link:10.48550/arXiv.2404.09158數(shù)據(jù)庫(kù)ID（收錄號(hào)）:20240190185 -
Record 148 of
Title:Effect of the magnetic field on spatio-temporal resolution of a streak tube with single-lens focusing system
Author Full Names:Wang, Ziyang(1); Tian, Liping(1); Shen, Lingbin(1); Chen, Liu(1); Lu, Weijie(1); Gao, Chunyu(1); Yang, Huizhen(1); Xue, Yanhua(2); Chen, Ping(2); Tian, Jinshou(2)Source Title:Proceedings of SPIE - The International Society for Optical EngineeringLanguage:EnglishDocument Type:Conference article (CA)Conference Title:4th International Conference on Laser, Optics, and Optoelectronic Technology, LOPET 2024Conference Date:May 17, 2024 - May 19, 2024Conference Location:Chongqing, ChinaConference Sponsor:Academic Exchange Information Centre (AEIC)Abstract:The streak tube with a large effective photocathode area, high spatial resolution, and high temporal resolution are essential for improving the detection accuracy of the streak tube imaging lidar (STIL). In this paper, a three-dimensional streak tube with single-lens focusing system is developed in CST STUDIO SUITE to systematically investigate the dependences of the dynamic spatio-temporal resolution on the geomagnetic fields. The electro-magnetic distribution in streak tube is calculated by adopting discretized Maxwell’s equations and Finite integral method (FIM). Monte Carlo (M-C) sampling is used to determine the initial distribution of electrons in the visible photocathode. The photoelectrons trajectories are tracked by using the particle-in-cell (PIC) method. All simulations are conducted under both shield (no magnetic field applied with the 3D model) and unshielded (49524.5 nT magnetic field applied with the 3D model) conditions. The results show that the shielding structure can significantly reduce the spatial dispersion of streak tube, and greatly improve the spatial resolution. In addition, there is little difference in temporal resolution, with or without a shielded structure. ? 2024 SPIE.Affiliations:(1) School of network and communication engineering, Jinling Institute of Technology, Hongjing Road, No.99, Nanjing; 211169, China; (2) Key Laboratory of of Transient Optics and Photonics, Key Laboratory of Ultra-fast Photoelectric Diagnostics Technology, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xinxi Road, No.17, Xi’an; 710119, ChinaPublication Year:2024Volume:13231Article Number:132313CDOI Link:10.1117/12.3040027數(shù)據(jù)庫(kù)ID（收錄號(hào)）:20243617008247 -
Record 149 of
Title:Temporal Characterization of Ultrashort Pulse via Reflected Four-Wave Mixing with Perturbation on Solid Surface
Author Full Names:Li, Jinhui(1,2,3); Liu, Keyang(1,2); Yuan, Hao(1,2,3); Wang, Xingguo(1,2); Zhen, Qiwen(1,2,3); Wang, Xianglin(1,2); Wang, Yishan(1,2,3); Zhao, Wei(1,2,3); Cao, Huabao(1,2,3); Fu, Yuxi(1,2,3)Source Title:High Power Laser Science and EngineeringLanguage:EnglishDocument Type:Article in PressAbstract:Time-domain characterization of ultrashort pulses is essential for studying interactions between light and matter. Here, we propose and demonstrate an all-optical pulse sampling technique based on reflected four-wave mixing with perturbation on a solid surface. In this method, a weak perturbation pulse perturbs the four-wave mixing signal generated by a strong fundamental pulse. The modulation signal of the four-wave mixing, which is detected in the reflection geometry to ensure a perfect phase-matching condition, directly reflects the temporal profile of the perturbation pulse. We successfully characterized multi-cycle and few-cycle pulses using this method. The reliability of our approach was verified by comparing to the widely employed frequency-resolved optical gating (FROG) method. This technique provides a simple and robust method for characterizing ultrashort laser pulses. ? 2024 Cambridge University Press. All rights reserved.Affiliations:(1) Center for Attosecond Science and Technology, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Shaanxi, Xi’an; 710119, China; (2) State Key Laboratory of Ultrafast Optical Science and Technology, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Shaanxi, Xi’an; 710119, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, ChinaPublication Year:2024DOI Link:10.1017/hpl.2024.93數(shù)據(jù)庫(kù)ID（收錄號(hào)）:20245217601622 -
Record 150 of
Title:Efficient Power Scaling of Broad-Area Laser Diodes from 915 to 1064 nm
Author Full Names:Yang, Guowen(1,2,3); Liu, Yuxian(2,3); Zhao, Yuliang(2,3); Lan, Yu(2,3); Zhao, Yongming(1); Tang, Song(1); Wu, Wenjun(1); Yao, Zhonghui(1); Li, Ying(1); Di, Jiuwen(1); Jixiang, Lin(1); Demir, Abdullah(4)Source Title:Proceedings of SPIE - The International Society for Optical EngineeringLanguage:EnglishDocument Type:Conference article (CA)Conference Title:High-Power Diode Laser Technology XXII 2024Conference Date:January 28, 2024 - January 30, 2024Conference Location:San Francisco, CA, United statesConference Sponsor:The Society of Photo-Optical Instrumentation Engineers (SPIE)Abstract:Our primary goal is to significantly enhance the output power of broad-area laser diodes (LDs) for improved cost-effectiveness of laser systems and broaden their applications in various fields. To achieve this, we implemented an epitaxial design with low internal optical loss and high internal efficiency in agreement with our simulations. We present comprehensive results of high-power single-emitter and bar LDs spanning wavelengths from 915 to 1064 nm. To demonstrate power scaling in single emitter LDs, we utilized waveguide widths from 100 to 500 μm, achieving a continuous-wave (CW) maximum output power of 74 W at 976 nm under room temperature conditions, limited by the heatsink temperature control. We also build fiber-coupled modules with single-emitters operating at 1.6 kW. Employing the same epitaxial structure in 1-cm wide laser bars, we demonstrated 976 nm laser bars operated at 100 A CW with 113 W output and a high efficiency of 72.9% at room temperature. Additionally, we achieved 500 W room-temperature CW laser bars at 940 nm. For long wavelength designs at 1064 nm, 500 W output was obtained in quasi-continuous-wave (QCW) operating laser bars. Our results represent significant advancements in obtaining high power and efficient LDs across a broad wavelength range and configuration. ? 2024 SPIE.Affiliations:(1) Dogain Optoelectronic Technology (Suzhou) Co., Ltd., Suzhou; 215000, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an; 710119, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China; (4) Bilkent University, UNAM - Institute of Materials Science and Nanotechnology, Ankara; 06800, TurkeyPublication Year:2024Volume:12867Article Number:128670WDOI Link:10.1117/12.3002642數(shù)據(jù)庫(kù)ID（收錄號(hào)）:20241615941127 -
Record 151 of
Title:CMID: Crossmodal Image Denoising via Pixel-Wise Deep Reinforcement Learning
Author Full Names:Guo, Yi(1,2,3); Gao, Yuanhang(4); Hu, Bingliang(1,3); Qian, Xueming(2); Liang, Dong(4)Source Title:SensorsLanguage:EnglishDocument Type:Journal article (JA)Abstract:Removing noise from acquired images is a crucial step in various image processing and computer vision tasks. However, the existing methods primarily focus on removing specific noise and ignore the ability to work across modalities, resulting in limited generalization performance. Inspired by the iterative procedure of image processing used by professionals, we propose a pixel-wise crossmodal image-denoising method based on deep reinforcement learning to effectively handle noise across modalities. We proposed a similarity reward to help teach an optimal action sequence to model the step-wise nature of the human processing process explicitly. In addition, We designed an action set capable of handling multiple types of noise to construct the action space, thereby achieving successful crossmodal denoising. Extensive experiments against state-of-the-art methods on publicly available RGB, infrared, and terahertz datasets demonstrate the superiority of our method in crossmodal image denoising. ? 2023 by the authors.Affiliations:(1) Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an; 710119, China; (2) School of Information and Communications Engineering, Xi’an Jiaotong University, Xi’an; 710049, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China; (4) College of Computer Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing; 211106, ChinaPublication Year:2024Volume:24Issue:1Article Number:42DOI Link:10.3390/s24010042數(shù)據(jù)庫(kù)ID（收錄號(hào)）:20240215372894 -
Record 152 of
Title:Algae blooms with resistance in fresh water: Potential interplay between Microcystis and antibiotic resistance genes
Author Full Names:Ji, Wenhui(1,2,3); Ma, Jingkai(1,2,3); Zheng, Zhipeng(1,2,3); Al-Herrawy, Ahmad Z.(4); Xie, Bing(1); Wu, Dong(1,2,3)Source Title:Science of the Total EnvironmentLanguage:EnglishDocument Type:Journal article (JA)Abstract:Microcystis, a type of cyanobacteria known for producing microcystins (MCs), is experiencing a global increase in blooms. They have been recently recognized as potential contributors to the widespread of antibiotic resistance genes (ARGs). By reviewing approximately 150 pieces of recent studies, a hypothesis has been formulated suggesting that significant fluctuations in MCs concentrations and microbial community structure during Microcystis blooms could influence the dynamics of waterborne ARGs. Among all MCs, microcystin-LR (MC-LR) is the most widely distributed worldwide, notably abundant in reservoirs during summer. MCs inhibit protein phosphatases or increase reactive oxygen species (ROS), inducing oxidative stresses, enhancing membrane permeability, and causing DNA damage. This further enhances selective pressures and horizontal gene transfer (HGT) chances of ARGs. The mechanisms by which Microcystis regulates ARG dissemination have been systematically organized for the first time, focusing on the secretion of MCs and the alterations of bacterial community structure. However, several knowledge gaps remain, particularly concerning how MCs interfere with the electron transport chain and how Microcystis facilitates HGT of ARGs. Concurrently, the predominance of Microcystis forming the algal microbial aggregates is considered a hotspot for preserving and transferring ARGs. Yet, Microcystis can deplete the nutrients from other taxa within these aggregates, thereby reducing the density of ARG-carrying bacteria. Therefore, further studies are needed to explore the ‘symbiotic - competitive’ relationships between Microcystis and ARG-hosting bacteria under varied nutrient conditions. Addressing these knowledge gaps is crucial to understand the impacts of the algal aggregates on dynamics of waterborne antibiotic resistome, and underscores the need for effective control of Microcystis to curb the spread of antibiotic resistance. Constructed wetlands and photocatalysis represent advantageous strategies for halting the spread of ARGs from the perspective of Microcystis blooms, as they can effectively control Microcystis and MCs while maintaining the stability of aquatic ecosystem. ? 2024 Elsevier B.V.Affiliations:(1) Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste, School of Ecological and Environmental Sciences, East China Normal University, Shanghai; 200241, China; (2) Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an; 710055, China; (3) Chongqing Key Laboratory of Precision Optics, Chongqing Institute of East China Normal University, Chongqing; 401120, China; (4) Water Pollution Research Department, National Research Centre, Giza, EgyptPublication Year:2024Volume:940Article Number:173528DOI Link:10.1016/j.scitotenv.2024.173528數(shù)據(jù)庫(kù)ID（收錄號(hào)）:20242316201824 -
Record 153 of
Title:High-performance reconstruction method combining total variation with a video denoiser for compressed ultrafast imaging
Author Full Names:Pei, Chengquan(1); Day-Uei Li, David(2); Shen, Qian(3); Zhang, Shian(4); Qi, Dalong(4); Jin, Chengzhi(4); Dong, Le(1)Source Title:Applied OpticsLanguage:EnglishDocument Type:Journal article (JA)Abstract:Compressed ultrafast photography (CUP) is a novel two-dimensional (2D) imaging technique to capture ultrafast dynamic scenes. Effective image reconstruction is essential inCUPsystems.However, existing reconstruction algorithms mostly rely on image priors and complex parameter spaces. Therefore, in general, they are time-consuming and result in poor imaging quality, which limits their practical applications. In this paper, we propose a novel reconstruction algorithm, to the best of our knowledge, named plug-in-plug-fast deep video denoising net-total variation (PnP-TV-FastDVDnet), which exploits an image’s spatial features and correlation features in the temporal dimension. Therefore, it offers higher-quality images than those in previously reported methods. First, we built a forward mathematical model of the CUP, and the closed-formsolution of the three suboptimization problems was derived according to plug-in and plug-out frames. Secondly, we used an advanced video denoising algorithm based on a neural network named FastDVDnet to solve the denoising problem. The peak signal-to-noise ratio (PSNR) and structural similarity index measure (SSIM) are improved on actual CUP data compared with traditional algorithms. On benchmark and real CUP datasets, the proposed method shows the comparable visual results while reducing the running time by96% over state-of-the-art algorithms. ? 2024 Optica Publishing Group.Affiliations:(1) Xidian University, Xi’an; 710119, China; (2) Faculty of Engineering, University of Strathclyde, Glasgow; G4 0RE, United Kingdom; (3) Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an; 710119, China; (4) State Key Laboratory of Precision Spectroscopy, School of Physics and Materials Science, East China Normal University, 3663 North Zhongshan Road, Shanghai; 200062, ChinaPublication Year:2024Volume:63Issue:8Start Page:C32-C40DOI Link:10.1364/AO.506058數(shù)據(jù)庫(kù)ID（收錄號(hào)）:20241215786117 -
Record 154 of
Title:Excitation of pure quartic platicon in optical microresonators
Author Full Names:Liu, Mulong(1); Zhu, Haotong(1); Huang, Huimin(2); Lu, Zhizhou(3); Dang, Yaai(1); Mei, Sen(1); Cai, Yanan(1); Wang, Yuanyuan(1); Zhou, Wenquan(1); Zhao, Wei(4)Source Title:Optics ExpressLanguage:EnglishDocument Type:Journal article (JA)Abstract:We analytically derive the formulas of the threshold pump intensity and the range of possible detuning for the initiation of the pure quartic platicon (PQP) in the presence of multiphoton absorption, free-carrier absorption, and free-carrier dispersion. Theoretical investigations demonstrate a feasible approach for the excitation of PQP in the normal quartic dispersion regime via the free-carrier effects in platforms such as silicon, germanium, and their derivates. Due to the time-variant nonlinear loss related to free-carrier absorption or additional nonlinear detuning induced by free-carrier plasma dispersion, PQP can be generated through turn-key or laser frequency scanning schemes in both the three- and four-photon absorption regimes. Parameter spaces associated with varying detuning and free-carrier lifetime for the different dark, oscillating, and bright PQP states are revealed in the turn-key generation case. Such solitonic pulses are more energetic than conventional quadratic solitons with the same pulse width, especially for shorter pulse operations. In the spectral domain, PQP microcombs in the mid-infrared are desired for spectroscopy. These findings will facilitate the generation and manipulation of PQP and present promising potential for Kerr microcomb related applications. ? 2024 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement.Affiliations:(1) School of Science, Northwest A&F University, Yangling; 712100, China; (2) College of Information Engineering, Northwest A&F University, Yangling; 712100, China; (3) Chongqing United Microelectronics Center (CUMEC), Xiyuan South Street, Chongqing; 401332, China; (4) State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics (XIOPM), Chinese Academy of Sciences (CAS), Xi’an; 710119, ChinaPublication Year:2024Volume:32Issue:21Start Page:37856-37868DOI Link:10.1364/OE.532950數(shù)據(jù)庫(kù)ID（收錄號(hào)）:20244117179466 -
Record 155 of
Title:Narrow versus Broad Waveguide Laser Diodes: A Comparative Analysis of Self-Heating and Reliability
Author Full Names:Demir, Abdullah(1); Sünnet?io?lu, Ali Kaan(1); Ebadi, Kaveh(1); Liu, Yuxian(2,3); Tang, Song(4); Yang, Guowen(2,3,4)Source Title:Proceedings of SPIE - The International Society for Optical EngineeringLanguage:EnglishDocument Type:Conference article (CA)Conference Title:High-Power Diode Laser Technology XXII 2024Conference Date:January 28, 2024 - January 30, 2024Conference Location:San Francisco, CA, United statesConference Sponsor:The Society of Photo-Optical Instrumentation Engineers (SPIE)Abstract:Semiconductor laser diodes (LDs) generate high output powers with high power conversion efficiencies. While broad-area LDs are favored for high-power applications, narrow-waveguide LDs are in demand for their single-mode characteristics. However, LDs suffer from device failures caused by catastrophic optical damage (COD) due to elevated self-heating at high operating currents. It is critical to understand the COD mechanism in these devices to enhance their reliability and operating output power. In this study, we investigated the self-heating and temperature characteristics of LDs with varying waveguide widths to uncover the cause of their failure mechanism. We assessed the performance, junction, and facet temperatures of the narrow (W=7 μm) and broad waveguide (W=100 μm) LDs. The narrower waveguide LDs achieved and operated at higher output power densities but, surprisingly, maintained lower junction and facet temperatures. Additionally, we employed a thermal simulation model to analyze heat transport characteristics versus LD waveguide widths. The simulation results showed that narrower waveguide LDs exhibit improved three-dimensional heat dissipation, resulting in reduced junction and facet temperatures and, thus, enhanced reliability. Our simulations align well with the experimental data. The findings demonstrate a transition in heat dissipation characteristics from broad to narrow waveguide behavior at approximately 50 μm width. These results clarify the fundamental reasons behind the superior reliability of narrower waveguide LDs and provide valuable guidance for LD thermal management. ? 2024 SPIE.Affiliations:(1) Bilkent University, UNAM - Institute of Materials Science and Nanotechnology, Ankara; 06800, Turkey; (2) State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an; 710119, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China; (4) Dogain Laser Technology (Suzhou) Co., Ltd., Suzhou; 215123, ChinaPublication Year:2024Volume:12867Article Number:128670HDOI Link:10.1117/12.3002971數(shù)據(jù)庫(kù)ID（收錄號(hào)）:20241615941113 -
Record 156 of
Title:Controllable dual-layer twisted array source
Author Full Names:Zhang, Shaohua(1); Zhou, Zhenglan(2); Zhou, Yuan(3); Qu, Jun(1)Source Title:Optics LettersLanguage:EnglishDocument Type:Journal article (JA)Abstract:The use of array structures in optical communication and trapping significantly enhances information capacity and trapping efficiency, while twisted beams present promising applications in both fields. However, it remains a considerable technical challenge to control and stabilize large-scale twisted beam arrays while ensuring both beam stability and multi-structural integrity. In this study, we constructed a twisted array of Schell-model sources and introduced an array twist parameter to characterize the global rotational characteristics of these randomly fluctuating optical fields. The results show that optimizing parameter settings allows for effective control of the rotational structure of beam arrays, enabling reverse rotation of the dual-layer beam structure. Additionally, the stability of the twisted array structure is effectively maintained through the dual-layer twist characteristics. Precise control of the dual-layer twisted beams enables the creation of complex optical field structures, thereby enhancing the flexibility of optical manipulation and further improving the trapping efficiency of particles and the bandwidth of optical communication. ? 2024 Optica Publishing Group. All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved.Affiliations:(1) Anhui Province Key Laboratory for Control and Applications of Optoelectronic Information Materials, Anhui Normal University, Anhui, Wuhu; 241000, China; (2) School of Electronic Engineering, Huainan Normal University, Huainan; 232038, China; (3) State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics Chinese Academy of Sciences, Shaanxi, Xi’an; 710119, ChinaPublication Year:2024Volume:49Issue:23Start Page:6657-6660DOI Link:10.1364/OL.543750數(shù)據(jù)庫(kù)ID（收錄號(hào)）:20244917456969