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Chinese Optics Letters最新文献

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Photo-reconfigurable and electrically switchable spatial terahertz wave modulator [Invited] 光可重构和电可切换空间太赫兹波调制器[特邀]
IF 3.5 2区 物理与天体物理
Chinese Optics Letters Pub Date : 2023-01-01 DOI: 10.3788/col202321.010002
Hongguan Yu, Huacai Wang, Zhixiong Shen, Shina Tao, Shijun Ge, Wei Hu
{"title":"Photo-reconfigurable and electrically switchable spatial terahertz wave modulator [Invited]","authors":"Hongguan Yu, Huacai Wang, Zhixiong Shen, Shina Tao, Shijun Ge, Wei Hu","doi":"10.3788/col202321.010002","DOIUrl":"https://doi.org/10.3788/col202321.010002","url":null,"abstract":"Spatial terahertz wave modulators that can arbitrarily tailor the electromagnetic wavefront are in high demand in nondestructive inspections and high-capacity wireless communications. Here, we propose a liquid crystal integrated metadevice. It modulates the terahertz wave based on the adjustable electromagnetically induced transparency analog when spatially changing the environmental refractive index. The functions of the device can be arbitrarily programmed via photo-reorienting the directors of liquid crystals with a digital micromirror device-based exposing system. The thin liquid crystal layer can be further driven by an electric field, and thus the function can be rapidly switched. Amplitude modulation and the lens effect are demonstrated with modulation depths over 50% at 0.94 THz.","PeriodicalId":10293,"journal":{"name":"Chinese Optics Letters","volume":"155 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83191604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Smith–Purcell radiation-like photoacoustic phased array Smith-Purcell类辐射光声相控阵
IF 3.5 2区 物理与天体物理
Chinese Optics Letters Pub Date : 2023-01-01 DOI: 10.3788/col202321.041901
Dongyi Shen, Guolin Zhao, Xianfeng Chen, W. Wan
{"title":"Smith–Purcell radiation-like photoacoustic phased array","authors":"Dongyi Shen, Guolin Zhao, Xianfeng Chen, W. Wan","doi":"10.3788/col202321.041901","DOIUrl":"https://doi.org/10.3788/col202321.041901","url":null,"abstract":"","PeriodicalId":10293,"journal":{"name":"Chinese Optics Letters","volume":"14 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81194217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Plasmonic nanostructure characterized by deep-neural-network-assisted spectroscopy 用深度神经网络辅助光谱学表征等离子体纳米结构
IF 3.5 2区 物理与天体物理
Chinese Optics Letters Pub Date : 2023-01-01 DOI: 10.3788/col202321.010004
Qiao Dong, Wenqi Wang, Xinyi Cao, Yibo Xiao, Xiaohan Guo, Jingxuan Ma, Lianhui Wang, Li Gao
{"title":"Plasmonic nanostructure characterized by deep-neural-network-assisted spectroscopy","authors":"Qiao Dong, Wenqi Wang, Xinyi Cao, Yibo Xiao, Xiaohan Guo, Jingxuan Ma, Lianhui Wang, Li Gao","doi":"10.3788/col202321.010004","DOIUrl":"https://doi.org/10.3788/col202321.010004","url":null,"abstract":"","PeriodicalId":10293,"journal":{"name":"Chinese Optics Letters","volume":"26 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73750185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Sideband-free dispersion-managed Yb-doped mode-locked fiber laser with Gires–Tournois interferometer mirrors 带Gires-Tournois干涉仪反射镜的无边带色散管理掺镱锁模光纤激光器
IF 3.5 2区 物理与天体物理
Chinese Optics Letters Pub Date : 2023-01-01 DOI: 10.3788/col202321.061401
Aoran Feng, Bowen Liu, Dongyu Yan, Genyu Bi, Youjian Song, Minglie Hu
{"title":"Sideband-free dispersion-managed Yb-doped mode-locked fiber laser with Gires–Tournois interferometer mirrors","authors":"Aoran Feng, Bowen Liu, Dongyu Yan, Genyu Bi, Youjian Song, Minglie Hu","doi":"10.3788/col202321.061401","DOIUrl":"https://doi.org/10.3788/col202321.061401","url":null,"abstract":"Aoran Feng (丰傲然), Bowen Liu (刘博文), Dongyu Yan (闫东钰), Genyu Bi (毕根毓), Youjian Song (宋有建), and Minglie Hu (胡明列) 1 Ultrafast Laser Laboratory, Key Laboratory of Opto-electronic Information Technology (Ministry of Education), School of Precision Instruments and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China 2 Georgia Tech Shenzhen Institute, Tianjin University, Shenzhen 518055, China 3 Optoelectronic Detection and Processing Laboratory, School of Electronic Engineering, Tianjin University of Technology and Education, Tianjin 300222, China","PeriodicalId":10293,"journal":{"name":"Chinese Optics Letters","volume":"82 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74333578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optical emission spectrometric diagnosis of laser-induced plasma and shock front produced at moderate pressure 中压下激光诱导等离子体和激波锋的发射光谱诊断
IF 3.5 2区 物理与天体物理
Chinese Optics Letters Pub Date : 2023-01-01 DOI: 10.3788/col202321.023001
Xin Peng, Min-sun Chen, Hao Liu
{"title":"Optical emission spectrometric diagnosis of laser-induced plasma and shock front produced at moderate pressure","authors":"Xin Peng, Min-sun Chen, Hao Liu","doi":"10.3788/col202321.023001","DOIUrl":"https://doi.org/10.3788/col202321.023001","url":null,"abstract":"We present a non-contact optical investigation of laser-induced plasma at moderate Ar pressure ranging from 1 to 100 Pa. The significant shock front and spatial fractionation among the different charged ions are demonstrated at the pressure of 20 Pa. The collisions between Si IV ions and ambient Ar atoms generate distinct and excited Ar II ions, fresh Si III ions, and electrons at the dense layer. The electron density peaks at the position of the shock front, indicating that the collision that yields electrons is dominant over the recombination process in the region of the shock layer and its immediate vicinity.","PeriodicalId":10293,"journal":{"name":"Chinese Optics Letters","volume":"10 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85966442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Rydberg electromagnetically induced transparency in 40K ultracold Fermi gases 40K超冷费米气体中Rydberg电磁感应透明
IF 3.5 2区 物理与天体物理
Chinese Optics Letters Pub Date : 2023-01-01 DOI: 10.3788/col202321.100201
Guoqi Bian, Biao Shan, Lianghui Huang, Jing Zhang
{"title":"Rydberg electromagnetically induced transparency in 40K ultracold Fermi gases","authors":"Guoqi Bian, Biao Shan, Lianghui Huang, Jing Zhang","doi":"10.3788/col202321.100201","DOIUrl":"https://doi.org/10.3788/col202321.100201","url":null,"abstract":"We report the measurement of the electromagnetically induced transparency (EIT) with Rydberg states in ultracold 40 K Fermi gases, which is obtained through a two-photon process with the ladder scheme. Rydberg – EIT lines are obtained by measuring the atomic losses instead of the transmitted probe beam. Based on the laser frequency stabilization locking to the superstable cavity, we study the Rydberg – EIT line shapes for the 37s and 35d states. We experimentally demonstrate the significant change in the Rydberg – EIT spectrum by changing the principal quantum number of the Rydberg state (n = 37 = 52 and l = 0). Moreover, the transparency peak position shift is observed, which may be induced by the interaction of the Rydberg atoms. This work provides a platform to explore many interesting behaviors involving Rydberg states in ultracold Fermi gases.","PeriodicalId":10293,"journal":{"name":"Chinese Optics Letters","volume":"30 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79158820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
50 m/187.5 Mbit/s real-time underwater wireless optical communication based on optical superimposition 基于光叠加的50m /187.5 Mbit/s实时水下无线光通信
IF 3.5 2区 物理与天体物理
Chinese Optics Letters Pub Date : 2023-01-01 DOI: 10.3788/col202321.020601
Yongxin Cheng, Xingqi Yang, Yufan Zhang, Chao Zhang, Hao Zhang, Zhijian Tong, Yizhan Dai, Weichao Lü, Xin Li, Haiwu Zou, Zejun Zhang, Jing Xu
{"title":"50 m/187.5 Mbit/s real-time underwater wireless optical communication based on optical superimposition","authors":"Yongxin Cheng, Xingqi Yang, Yufan Zhang, Chao Zhang, Hao Zhang, Zhijian Tong, Yizhan Dai, Weichao Lü, Xin Li, Haiwu Zou, Zejun Zhang, Jing Xu","doi":"10.3788/col202321.020601","DOIUrl":"https://doi.org/10.3788/col202321.020601","url":null,"abstract":"In this paper, an optical pulse amplitude modulation with 4 levels (PAM-4) using a fiber combiner is proposed to enhance the data rate of a field-programmable gate-array-based long-distance real-time underwater wireless optical communication system. Two on – off keying signals with different amplitudes are used to modulate two pigtailed laser diodes, respectively, and the generated optical signals are superimposed into optical PAM-4 signals by a fiber combiner. The optical PAM-4 scheme can effectively alleviate the nonlinearity, although it reduces the peak-to-peak value of the emitting optical power by 25%. A real-time data rate of 187.5 Mbit/s is achieved by using the optical PAM-4 with a transmission distance of 50 m. The data rate is increased by about 25% compared with the conventional electrical PAM-4 in the same condition.","PeriodicalId":10293,"journal":{"name":"Chinese Optics Letters","volume":"19 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73542376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Immersed liquid cooling Nd:YAG slab laser oscillator 浸入式液冷Nd:YAG平板激光振荡器
IF 3.5 2区 物理与天体物理
Chinese Optics Letters Pub Date : 2023-01-01 DOI: 10.3788/col202321.081401
Z. Ye, Xiaolong Zhou, Shushan Jiang, Meng Huang, Fei Wu, Dongge Lei
{"title":"Immersed liquid cooling Nd:YAG slab laser oscillator","authors":"Z. Ye, Xiaolong Zhou, Shushan Jiang, Meng Huang, Fei Wu, Dongge Lei","doi":"10.3788/col202321.081401","DOIUrl":"https://doi.org/10.3788/col202321.081401","url":null,"abstract":"An immersed liquid cooling slab laser is demonstrated with deionized water as the coolant and a Nd:YAG slab as the gain medium. Using waveguides, a highly uniform pump beam distribution is achieved, and the flow velocity distribution is also optimized in the channels of the gain module (GM). At various flow velocities, the convective heat transfer coefficient (CHTC) is obtained. Experimentally, a maximum output power of 434 W is obtained with an optical – optical efficiency of 27.1% and a slope efficiency of 36.6%. To the best of our knowledge, it is the highest output power of an immersed liquid cooling laser oscillator with a single Nd:YAG slab.","PeriodicalId":10293,"journal":{"name":"Chinese Optics Letters","volume":"14 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87577277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Single-layered non-interleaved spin-insensitive metasurfaces for wavefront engineering 用于波前工程的单层非交织自旋不敏感超表面
IF 3.5 2区 物理与天体物理
Chinese Optics Letters Pub Date : 2023-01-01 DOI: 10.3788/col202321.010006
A. Khalid, Naeem Ullah, Yu Han, Urooj Asghar, Xiaocong Yuan, F. Feng
{"title":"Single-layered non-interleaved spin-insensitive metasurfaces for wavefront engineering","authors":"A. Khalid, Naeem Ullah, Yu Han, Urooj Asghar, Xiaocong Yuan, F. Feng","doi":"10.3788/col202321.010006","DOIUrl":"https://doi.org/10.3788/col202321.010006","url":null,"abstract":"","PeriodicalId":10293,"journal":{"name":"Chinese Optics Letters","volume":"23 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78071977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Detecting the vector of nanoscale light field with atomic defect 具有原子缺陷的纳米尺度光场矢量检测
IF 3.5 2区 物理与天体物理
Chinese Optics Letters Pub Date : 2023-01-01 DOI: 10.3788/col202321.071202
Qiyu Wang, Zehao Wang, Xiang-Dong Chen, Fangwen Sun
{"title":"Detecting the vector of nanoscale light field with atomic defect","authors":"Qiyu Wang, Zehao Wang, Xiang-Dong Chen, Fangwen Sun","doi":"10.3788/col202321.071202","DOIUrl":"https://doi.org/10.3788/col202321.071202","url":null,"abstract":"Modulation of a vector light field has played an important role in the research of nanophotonics. However, it is still a great challenge to accurately measure the three-dimensional vector distribution at nanoscale. Here, based on the interaction between the light field and atomic-sized nitrogen-vacancy (NV) color center in diamonds, we demonstrate an efficient method for vectorial mapping of the light-field distribution at nanoscale. Single NV centers with different but well-defined symmetry axes are selected and then interact with the same tightly focused light field. The excitation of a single NV center is related to the angle between the NV center axis and the polarization of the light field. Then the fluorescence patterns of different NV centers provide the information on the vectorial light field distribution. Subsequently analyzing the fluorescence patterns with the help of a deep neural network, the intensity and phase of the light-field vectorial components are fully reconstructed with nanometer resolution. The experimental results are in agreement with theoretical calculations. It demonstrates that our method can help to study light – matter interaction at nanoscale and extend the application of vector light fields in research on nanophotonics.","PeriodicalId":10293,"journal":{"name":"Chinese Optics Letters","volume":"13 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78812473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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