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Babinet’s meta-apertures for holographic bi-imaging 巴比内全息双成像的超孔径
IF 3.5 2区 物理与天体物理
Chinese Optics Letters Pub Date : 2023-01-01 DOI: 10.3788/col202321.090501
Syed Yasir Azeem, D. Zhao, Rui-ming Xia, Kun Huang
{"title":"Babinet’s meta-apertures for holographic bi-imaging","authors":"Syed Yasir Azeem, D. Zhao, Rui-ming Xia, Kun Huang","doi":"10.3788/col202321.090501","DOIUrl":"https://doi.org/10.3788/col202321.090501","url":null,"abstract":"Complementary metasurfaces based on Babinet ’ s principle have shown remarkable performance in optical applications like polarization conversion and split ring resonators by dynamically reversing the properties of light in both transmission and reflection modes. However, complementary diffractive metasurfaces for different holographic images have not yet proven to be effective because Babinet ’ s principle predicts identical diffraction patterns from complementary surfaces. Here, we report carefully designed complementary metasurfaces consisting of an engineered metallic aluminum layer sitting on a transparent quartz substrate. Upon illumination, both complementary devices output entirely different diffractive intensity profiles from each other, yielding two holographic images at visible wavelengths from 430 nm to 650 nm. It provides experimental evidence for encoding two images into complementary metasurfaces, indicating an exception of Babinet ’ s principle in the Fresnel region of complementary apertures.","PeriodicalId":10293,"journal":{"name":"Chinese Optics Letters","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86102546","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
Real-time suppression of random phase drift for laser ranging with high-frequency intermode beats 高频模间拍激光测距随机相位漂移的实时抑制
IF 3.5 2区 物理与天体物理
Chinese Optics Letters Pub Date : 2023-01-01 DOI: 10.3788/col202321.041202
{"title":"Real-time suppression of random phase drift for laser ranging with high-frequency intermode beats","authors":"","doi":"10.3788/col202321.041202","DOIUrl":"https://doi.org/10.3788/col202321.041202","url":null,"abstract":"","PeriodicalId":10293,"journal":{"name":"Chinese Optics Letters","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89594828","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
Comparative analysis of temporal-spatial and time-frequency features for pattern recognition of φ-OTDR φ-OTDR模式识别的时空与时频特征对比分析
IF 3.5 2区 物理与天体物理
Chinese Optics Letters Pub Date : 2023-01-01 DOI: 10.3788/col202321.040601
Fanran Meng, Wenxiang Zhang, Xiaojun Liu, Fei Liu, Xian Zhou
{"title":"Comparative analysis of temporal-spatial and time-frequency features for pattern recognition of φ-OTDR","authors":"Fanran Meng, Wenxiang Zhang, Xiaojun Liu, Fei Liu, Xian Zhou","doi":"10.3788/col202321.040601","DOIUrl":"https://doi.org/10.3788/col202321.040601","url":null,"abstract":"","PeriodicalId":10293,"journal":{"name":"Chinese Optics Letters","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88954591","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
Azimuthal vector beam illuminating plasmonic tips circular cluster for surface-enhanced Raman spectroscopy 面向表面增强拉曼光谱的方位矢量光束照射等离子体尖端圆簇
IF 3.5 2区 物理与天体物理
Chinese Optics Letters Pub Date : 2023-01-01 DOI: 10.3788/col202321.033603
Lu Zhang, Chao Meng, Hao Yang, Wending Zhang
{"title":"Azimuthal vector beam illuminating plasmonic tips circular cluster for surface-enhanced Raman spectroscopy","authors":"Lu Zhang, Chao Meng, Hao Yang, Wending Zhang","doi":"10.3788/col202321.033603","DOIUrl":"https://doi.org/10.3788/col202321.033603","url":null,"abstract":"Noble metallic nanostructures with strong electric near-field enhancement can significantly improve the nanoscale light-matter interactions and are critical for high-sensitivity surface-enhanced Raman spectroscopy (SERS). Here, we use azimuthal vector beam (AVB) to illuminate the plasmonic tips circular cluster (PTCC) array to enhance the electric near-field intensity of the PTCC array, and then use it to improve SERS sensitivity. The PTCC array were prepared based on the self-assembled and Inductive Coupled Plasmon (ICP) etching methods. The calculation results show that, compared with linearly polarized beam (LPB) and radial vector beam (RVB) excitations, the AVB excitation can obtain stronger electric near-field enhancement due to the strong resonant responses formed in the nanogap between adjacent plasmonic tips. Subsequently, our experimental results proved that AVB excitation increased SERS sensitivity to 10 -13 M, which is 2 orders of magnitude higher than that of LPB excitation. Meanwhile, the PTCC array had excellent uniformity with Raman enhancement factor calculated to be ∼ 2.4× 10 8 . This kind of vector light field enhancing Raman spectroscopy may be applied in the field of sensing technologies, such as to the trace examination with ultra-low concentration.","PeriodicalId":10293,"journal":{"name":"Chinese Optics Letters","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88424141","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
Improving accuracy and sensitivity of diffraction-based overlay metrology 提高衍射叠加计量的精度和灵敏度
IF 3.5 2区 物理与天体物理
Chinese Optics Letters Pub Date : 2023-01-01 DOI: 10.3788/col202321.071204
Wenhe Yang, Nan Lin, Xin Wei, Yunyi Chen, Sikun Li, Yuxin Leng, J. Shao
{"title":"Improving accuracy and sensitivity of diffraction-based overlay metrology","authors":"Wenhe Yang, Nan Lin, Xin Wei, Yunyi Chen, Sikun Li, Yuxin Leng, J. Shao","doi":"10.3788/col202321.071204","DOIUrl":"https://doi.org/10.3788/col202321.071204","url":null,"abstract":"Overlay (OVL) for patterns placed at two different layers during microchip production is a key parameter that controls the manufacturing process. The tolerance of OVL metrology for the latest microchip needs to be at nanometer scale. This paper discusses the influence on the accuracy and sensitivity of diffraction-based overlay (DBO) after developing inspection and after etching inspection by the asymmetrical deformation of the OVL mark induced by chemical mechanical polishing or etching. We show that the accuracy and sensitivity of DBO metrology can be significantly improved by matching the measuring light wavelength to the thickness between layers and by collecting high-order diffraction signals, promising a solution for future OVL metrology equipment.","PeriodicalId":10293,"journal":{"name":"Chinese Optics Letters","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80896317","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
Thickness dependency of nonlinear optical properties in ITO/Sn composite films ITO/Sn复合薄膜非线性光学特性的厚度依赖性
IF 3.5 2区 物理与天体物理
Chinese Optics Letters Pub Date : 2023-01-01 DOI: 10.3788/col202321.081902
Boyang Nan, R. Hong, Chunxian Tao, Qi Wang, Hui Lin, Zhaoxia Han, Dawei Zhang
{"title":"Thickness dependency of nonlinear optical properties in ITO/Sn composite films","authors":"Boyang Nan, R. Hong, Chunxian Tao, Qi Wang, Hui Lin, Zhaoxia Han, Dawei Zhang","doi":"10.3788/col202321.081902","DOIUrl":"https://doi.org/10.3788/col202321.081902","url":null,"abstract":"In this study, a batch of indium tin oxide (ITO)/Sn composites with different ratios was obtained based on the principle of thermal evaporation by an electron beam. The crystalline structure, surface shape, and optical characterization of the films were researched using an X-ray diffractometer, an atomic force microscope, a UV-Vis-NIR dual-beam spectrophotometer, and an open-hole Z-scan system. By varying the relative thickness ratio of the ITO/Sn bilayer film, tunable nonlinear optical properties were achieved. The nonlinear saturation absorption coefficient β maximum of the ITO/Sn composites is − 10.5 × 10 − 7 cm = W, approximately 21 and 1.72 times more enhanced compared to monolayer ITO and Sn, respectively. Moreover, the improvement of the sample nonlinear performance was verified using finite-difference in temporal domain simulations.","PeriodicalId":10293,"journal":{"name":"Chinese Optics Letters","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79658656","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 harmonic generation of terahertz waves in a topological valley polaritonic microcavity 拓扑谷极化微腔中太赫兹波的非线性谐波产生
IF 3.5 2区 物理与天体物理
Chinese Optics Letters Pub Date : 2023-01-01 DOI: 10.3788/col202321.081901
Yao Lu, H. Xiong, Yibo Huang, Qiang Wu, Jiwei Qi, Chongpei Pan, Jingjun Xu
{"title":"Nonlinear harmonic generation of terahertz waves in a topological valley polaritonic microcavity","authors":"Yao Lu, H. Xiong, Yibo Huang, Qiang Wu, Jiwei Qi, Chongpei Pan, Jingjun Xu","doi":"10.3788/col202321.081901","DOIUrl":"https://doi.org/10.3788/col202321.081901","url":null,"abstract":"Compact terahertz (THz) devices, especially for nonlinear THz components, have received more and more attention due to their potential applications in THz nonlinearity-based sensing, communications, and computing devices. However, effective means to enhance, control, and confine the nonlinear harmonics of THz waves remain a great challenge for micro-scale THz nonlinear devices. In this work, we have established a technique for nonlinear harmonic generation of THz waves based on phonon polariton-enhanced giant THz nonlinearity in a 2D-topologically protected valley photonic microcavity. Effective THz harmonic generation has been observed in both noncentrosymmetric and centrosymmetric nonlinear materials. These results can provide a valuable reference for the generation and control of THz high-harmonics, thus developing new non-linear devices in the THz regime.","PeriodicalId":10293,"journal":{"name":"Chinese Optics Letters","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84755447","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
2 kW random fiber laser based on hybrid Yb-Raman gain [Invited] 基于Yb-Raman混合增益的2kw随机光纤激光器[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/col202321.090004
Jieping Ye, Yang Zhang, Junrui Liang, Xiao Ma, Jiangming Xu, T. Yao, Jin-yong Leng, P. Zhou
{"title":"2 kW random fiber laser based on hybrid Yb-Raman gain [Invited]","authors":"Jieping Ye, Yang Zhang, Junrui Liang, Xiao Ma, Jiangming Xu, T. Yao, Jin-yong Leng, P. Zhou","doi":"10.3788/col202321.090004","DOIUrl":"https://doi.org/10.3788/col202321.090004","url":null,"abstract":"High-power operation is one of the most important research topics surrounding random fiber lasers (RDFLs). Here we optimized the cavity structure and proposed a new scheme based on hybrid gain to address the issue of high-power back-ward light in traditional kilowatt-level RDFLs. Consequently, a record power of 1972 W was achieved while the maximum backward leaked power only reached 0.12 W. The conversion efficiency relative to the laser diode pump power was 68.4%, and the highest spectral purity of the random lasing reached 98.1%. This work may provide a reference for high-power RDFLs, Raman fiber lasers, and long-wavelength Yb-doped fiber lasers.","PeriodicalId":10293,"journal":{"name":"Chinese Optics Letters","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83515688","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
Generation of 1.3/1.4 µm random fiber laser by bismuth-doped phosphosilicate fiber 掺铋磷硅酸盐光纤制备1.3/1.4µm随机光纤激光器
IF 3.5 2区 物理与天体物理
Chinese Optics Letters Pub Date : 2023-01-01 DOI: 10.3788/col202321.071401
Hang Wang, Wencheng Jia, Yongjia Yao, Xinyun Yang, M. Melkumov, S. Firstov, A. Lobanov, Zhipeng Dong, Zhengqian Luo
{"title":"Generation of 1.3/1.4 µm random fiber laser by bismuth-doped phosphosilicate fiber","authors":"Hang Wang, Wencheng Jia, Yongjia Yao, Xinyun Yang, M. Melkumov, S. Firstov, A. Lobanov, Zhipeng Dong, Zhengqian Luo","doi":"10.3788/col202321.071401","DOIUrl":"https://doi.org/10.3788/col202321.071401","url":null,"abstract":"We have successfully generated a 1.3/1.4 μ m random fiber laser (RFL) using bismuth (Bi)-doped phosphosilicate fiber. The Bi-doped RFL has shown excellent long-term operational stability with a standard deviation of approximately 0.34% over 1 h at a maximum output power of 549.30 mW, with a slope efficiency of approximately 29.21%. The Bi-doped phosphosilicate fiber offers an emission spectrum ranging from 1.28 to 1.57 μ m, indicating that it can be tuned within this band. Here, we demonstrated a wavelength-tuning fiber laser with a wavelength of 1.3/1.4 μ m, achieved through the using of a fiber Bragg grating or a tunable filter. Compared to traditional laser sources, the RFL reduces the speckle contrast of images by 11.16%. Due to its high stability, compact size, and high efficiency, this RFL is highly promising for use in biomedical imaging, communication, and sensor applications.","PeriodicalId":10293,"journal":{"name":"Chinese Optics Letters","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81687496","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
Cryogenic thermo-optic thin-film lithium niobate modulator with an NbN superconducting heater 带NbN超导加热器的低温热光学薄膜铌酸锂调制器
IF 3.5 2区 物理与天体物理
Chinese Optics Letters Pub Date : 2023-01-01 DOI: 10.3788/col202321.081301
Hailong Han, Xingyu Zhang, You Xiao, Pusheng Yuan, Huiqin Yu, Shu-Na Wang, Heng Li, Weikeng Xie, Mingzhi Lu, Lingyun Li, Xiaoping Liu, Hao Li, L. You
{"title":"Cryogenic thermo-optic thin-film lithium niobate modulator with an NbN superconducting heater","authors":"Hailong Han, Xingyu Zhang, You Xiao, Pusheng Yuan, Huiqin Yu, Shu-Na Wang, Heng Li, Weikeng Xie, Mingzhi Lu, Lingyun Li, Xiaoping Liu, Hao Li, L. You","doi":"10.3788/col202321.081301","DOIUrl":"https://doi.org/10.3788/col202321.081301","url":null,"abstract":"We propose and demonstrate a cryogenic thermo-optic (TO) modulator in x-cut thin-film lithium niobate (TFLN) with an NbN superconducting heater. Compared to a conventional metal heating electrode, a fast and energy-efficient modulation is obtained by placing an NbN superconducting heating electrode above the TFLN waveguide. The transition of the NbN super-conducting electrode between superconducting and normal states turns the heating and cooling processes from continuous to discontinuous change. Thus, the energy consumption during the modulation process is reduced proportionally. The rise/fall time of the proposed device is 22 μ s/15 μ s, which has been the fastest response time reported in TFLN thermo-optic modulators so far. The presented TO modulator can easily be used at cryogenic temperatures and has great potential for applications in cryogenic optoelectronics.","PeriodicalId":10293,"journal":{"name":"Chinese Optics Letters","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89533808","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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