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Chinese Optics Letters最新文献

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Self-focusing of partially coherent beams based on complex screen and split-step Fourier transform methods 基于复屏和分步傅里叶变换方法的部分相干光束自聚焦
IF 3.5 2区 物理与天体物理
Chinese Optics Letters Pub Date : 2023-01-01 DOI: 10.3788/col202321.071901
Fanglun Yang, Guowen Zhang, Xiaoqi Zhang, Yanli Zhang, Ruifeng Wang, Jianqiang Zhu
{"title":"Self-focusing of partially coherent beams based on complex screen and split-step Fourier transform methods","authors":"Fanglun Yang, Guowen Zhang, Xiaoqi Zhang, Yanli Zhang, Ruifeng Wang, Jianqiang Zhu","doi":"10.3788/col202321.071901","DOIUrl":"https://doi.org/10.3788/col202321.071901","url":null,"abstract":"The self-focusing phenomenon of partially coherent beams (PCBs) was simulated using the complex screen method com-bined with the split-step Fourier method to solve the nonlinear Schrödinger equation. Considering the propagation of Gaussian Schell-model beams in a nonlinear medium as an example, the suppression effects of intensity, propagation distance, and spatial coherence on small-scale self-focusing were demonstrated. Simulations of overall and small-scale self-focusing using this method were compared with the existing literature to demonstrate the validity of the method. This method can numerically analyze the degree of self-focusing in PCBs and advance the study of their nonlinearity","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":"73733168","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
Nonlinear optical limiting effect of graphene dispersions at 3.8 µm 石墨烯分散体在3.8µm处的非线性光学限制效应
IF 3.5 2区 物理与天体物理
Chinese Optics Letters Pub Date : 2023-01-01 DOI: 10.3788/col202321.021902
Zhengnan Wu, Yuangang Lu, Jianqin Peng, Jian Huang, Chongjun He
{"title":"Nonlinear optical limiting effect of graphene dispersions at 3.8 µm","authors":"Zhengnan Wu, Yuangang Lu, Jianqin Peng, Jian Huang, Chongjun He","doi":"10.3788/col202321.021902","DOIUrl":"https://doi.org/10.3788/col202321.021902","url":null,"abstract":"","PeriodicalId":10293,"journal":{"name":"Chinese Optics Letters","volume":"125 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73773914","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
Controlled generation of order-switchable cylindrical vector beams from a Nd:YAG laser 由Nd:YAG激光器可控地产生顺序可切换的圆柱形矢量光束
IF 3.5 2区 物理与天体物理
Chinese Optics Letters Pub Date : 2023-01-01 DOI: 10.3788/col202321.101401
Longyang Cao, Mingming Zhang, Jiantai Dou, Jiang Zhao, Youyou Hu, Bo Li
{"title":"Controlled generation of order-switchable cylindrical vector beams from a Nd:YAG laser","authors":"Longyang Cao, Mingming Zhang, Jiantai Dou, Jiang Zhao, Youyou Hu, Bo Li","doi":"10.3788/col202321.101401","DOIUrl":"https://doi.org/10.3788/col202321.101401","url":null,"abstract":"We reported and demonstrated a solid-state laser to achieve controlled generation of order-switchable cylindrical vector beams (CVBs). In the cavity, a group of vortex wave plates (VWPs) with two quarter-wave plates between the VWPs was utilized to achieve mode conversion and order-switch of CVBs. By utilizing two VWPs of 1 st and 3 rd order, the 2 nd and 4 th order CVBs were obtained, with mode purities of 96.8% and 94.8%, and sloping efficiencies of 4.45% and 3.06%, respectively. Furthermore, by applying three VWPs of 1 st , 2 nd and 3 rd order, the mode-switchable Gaussian beam, 2 nd , 4 th and 6 th order CVBs were generated.","PeriodicalId":10293,"journal":{"name":"Chinese Optics Letters","volume":"1 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77520579","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
Heat accumulation effects in femtosecond laser-induced subwavelength periodic surface structures on silicon 飞秒激光诱导的硅表面亚波长周期性结构中的热积累效应
IF 3.5 2区 物理与天体物理
Chinese Optics Letters Pub Date : 2023-01-01 DOI: 10.3788/col202321.051402
Q. Fu, Jing Qian, Guande Wang, Quanzhong Zhao
{"title":"Heat accumulation effects in femtosecond laser-induced subwavelength periodic surface structures on silicon","authors":"Q. Fu, Jing Qian, Guande Wang, Quanzhong Zhao","doi":"10.3788/col202321.051402","DOIUrl":"https://doi.org/10.3788/col202321.051402","url":null,"abstract":"","PeriodicalId":10293,"journal":{"name":"Chinese Optics Letters","volume":"112 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77608742","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
Linearized microwave downconversion link based on fast and intelligent impairment equalization for noncooperative systems 基于非合作系统快速智能损伤均衡的线性化微波下变频链路
IF 3.5 2区 物理与天体物理
Chinese Optics Letters Pub Date : 2023-01-01 DOI: 10.3788/col202321.023902
Zhiyu Chen, Xin Zhong, Lin Jiang, Jiaxin Xu, Jingxian Liu, Yan Pan, Tao Zhou
{"title":"Linearized microwave downconversion link based on fast and intelligent impairment equalization for noncooperative systems","authors":"Zhiyu Chen, Xin Zhong, Lin Jiang, Jiaxin Xu, Jingxian Liu, Yan Pan, Tao Zhou","doi":"10.3788/col202321.023902","DOIUrl":"https://doi.org/10.3788/col202321.023902","url":null,"abstract":"We experimentally demonstrated the use of intelligent impairment equalization (IIE) for microwave downconversion link linearization in noncooperative systems. Such an equalizer is realized based on an artificial neural network (ANN). Once the training process is completed, the inverse link transfer function can be determined. With the inverse transformation for the detected signal after transmission, the third-order intermodulation distortion components are suppressed significantly without requiring any prior information from an input RF signal. Furthermore, fast training speed is achieved, since the configuration of ANN-based equalizer is simple. Experimental results show that the spurious-free dynamic range of the proposed link is improved to 106.5 dB · Hz 2/3 , which is 11.3 dB higher than that of a link without IIE. Meanwhile, the training epochs reduce to only five, which has the potential to meet the practical engineering requirement.","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":"76091440","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
Compact in situ microscope for photoelectron spectroscopy via two-mirror reflection 紧凑的原位显微镜光电子能谱通过双镜反射
IF 3.5 2区 物理与天体物理
Chinese Optics Letters Pub Date : 2023-01-01 DOI: 10.3788/col202321.061101
Chenyang Yue, Hong Jiang, Tianzhi Li, Siyan Yao, Shengyue Zeng, Xiaojun Xu, Chaofan Zhang
{"title":"Compact in situ microscope for photoelectron spectroscopy via two-mirror reflection","authors":"Chenyang Yue, Hong Jiang, Tianzhi Li, Siyan Yao, Shengyue Zeng, Xiaojun Xu, Chaofan Zhang","doi":"10.3788/col202321.061101","DOIUrl":"https://doi.org/10.3788/col202321.061101","url":null,"abstract":"Photoelectron spectroscopy is a powerful tool in characterizing the electronic structure of materials. To investigate the specific region of interest with high probing efficiency, in this work we propose a compact insitumicroscope to assist photoelectron spectroscopy. The configuration of long objective distance of 200 mm with two-mirror reflection has been introduced. Large magnification of 5 × to 100 × , lateral resolution of 4.08 μ m, and longitudinal resolution of 4.49 μ m have been achieved. Meanwhile, the testing result shows larger focal depth of this insituoptical microscope. Similar configu-rations could also be applied to other electronic microscopes to improve their probing capability.","PeriodicalId":10293,"journal":{"name":"Chinese Optics Letters","volume":"32 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87272686","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
Water track laser Doppler velocimeter [Invited] 水迹激光多普勒测速仪[特邀]
2区 物理与天体物理
Chinese Optics Letters Pub Date : 2023-01-01 DOI: 10.3788/col202321.090005
� 黄, � 王, 志毅 �, 晓明 �, � 周, 晖 罗
{"title":"Water track laser Doppler velocimeter [Invited]","authors":"è�£ 黄, ç�¦ 王, 志毅 å�‘, 晓明 è�‚, å�¥ 周, æ™– ç½—","doi":"10.3788/col202321.090005","DOIUrl":"https://doi.org/10.3788/col202321.090005","url":null,"abstract":"A water track laser Doppler velocimeter (LDV) is developed with advantages of high update rate, high real-time performance, high concealment, light weight, and small dimensions. The water track LDV measures the advance velocity of the under-water vehicle with respect to the surrounding water. The experimental results show that the water track LDV has an accuracy of 96.4% when the moving velocity of the vehicle with respect to the ground exceeds 0.25 m/s. Thus, the water track LDV is promising in the application of underwater navigation to aid the strapdown inertial navigation system.","PeriodicalId":10293,"journal":{"name":"Chinese Optics Letters","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135600661","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
Low-loss, high-purity, and ultrabroadband all-fiber LP41 mode converter employing a mode-selective photonic lantern [Invited] 采用模式选择光子灯的低损耗、高纯度、超宽带全光纤LP41模式转换器[特邀]
2区 物理与天体物理
Chinese Optics Letters Pub Date : 2023-01-01 DOI: 10.3788/col202321.110008
Liang Chen, Huiyi Guo, Zekun Shi, Wenzhe Chang, Boyu Chen, Zhi Wang, Yan-ge Liu
{"title":"Low-loss, high-purity, and ultrabroadband all-fiber LP41 mode converter employing a mode-selective photonic lantern [Invited]","authors":"Liang Chen, Huiyi Guo, Zekun Shi, Wenzhe Chang, Boyu Chen, Zhi Wang, Yan-ge Liu","doi":"10.3788/col202321.110008","DOIUrl":"https://doi.org/10.3788/col202321.110008","url":null,"abstract":"Broadband mode converters are essential devices for space-division and wavelength-division multiplexing systems. There are great challenges in the generation of higher-order modes above the third order with low loss and high mode purity employing all-fiber devices. In this paper, an all-fiber LP41 mode converter is proposed and fabricated by tapering a nine-core single-mode fiber bundle. Experimental results indicate that this all-fiber LP41 mode converter is low-loss, high-purity, and ultrabroadband. The insertion loss is less than 0.4 dB. The purity of odd LP41 at 1310 nm is 95.09%, and the operating bandwidth exceeds 280 nm.","PeriodicalId":10293,"journal":{"name":"Chinese Optics Letters","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135612365","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
Ultrabroadband chiral metasurface for linear polarization conversion and asymmetric transmission based on enhanced interference theory 基于增强干涉理论的线偏振转换和非对称传输超宽带手性超表面
2区 物理与天体物理
Chinese Optics Letters Pub Date : 2023-01-01 DOI: 10.3788/col202321.113602
Jingcheng Zhao, Nan Li, Yongzhi Cheng
{"title":"Ultrabroadband chiral metasurface for linear polarization conversion and asymmetric transmission based on enhanced interference theory","authors":"Jingcheng Zhao, Nan Li, Yongzhi Cheng","doi":"10.3788/col202321.113602","DOIUrl":"https://doi.org/10.3788/col202321.113602","url":null,"abstract":"In this paper, we propose an ultrabroadband chiral metasurface (CMS) composed of S-shaped resonator structures situated between two twisted subwavelength gratings and dielectric substrate. This innovative structure enables ultrabroadband and high-efficiency linear polarization (LP) conversion, as well as asymmetric transmission (AT) effect in the microwave region. The enhanced interference effect of the Fabry–Perot-like resonance cavity greatly expands the bandwidth and efficiency of LP conversion and AT effect. Through numerical simulations, it has been revealed that the cross-polarization transmission coefficients for normal forward (-z) and backward (+z) incidence exceed 0.8 in the frequency range of 4.13 to 17.34 GHz, accompanied by a polarization conversion ratio of over 99%. Furthermore, our microwave experimental results validate the consistency among simulation, theory, and measurement. Additionally, we elucidate the distinct characteristics of ultrabroadband LP conversion and significant AT effect through analysis of polarization azimuth rotation and ellipticity angles, total transmittance, AT coefficient, and electric field distribution. The proposed CMS structure shows excellent polarization conversion properties via AT effect and has potential applications in areas such as radar, remote sensing, and satellite communication.","PeriodicalId":10293,"journal":{"name":"Chinese Optics Letters","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135612369","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
Q-switched Er3+/Dy3+ codoped ZrF4 fiber laser: continuously tunable pulse generation from 3.06 to 3.62 µm 调q Er3+/Dy3+共掺ZrF4光纤激光器:脉冲产生范围为3.06 ~ 3.62µm
IF 3.5 2区 物理与天体物理
Chinese Optics Letters Pub Date : 2023-01-01 DOI: 10.3788/col202321.041402
Yongzhi Wang, Hongyu Luo, Biao Wang, Jianfeng Li, Y. Liu
{"title":"Q-switched Er3+/Dy3+ codoped ZrF4 fiber laser: continuously tunable pulse generation from 3.06 to 3.62 µm","authors":"Yongzhi Wang, Hongyu Luo, Biao Wang, Jianfeng Li, Y. Liu","doi":"10.3788/col202321.041402","DOIUrl":"https://doi.org/10.3788/col202321.041402","url":null,"abstract":"","PeriodicalId":10293,"journal":{"name":"Chinese Optics Letters","volume":"21 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73721188","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
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