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Photon pair generation in lithium niobate waveguide periodically poled by femtosecond laser 飞秒激光周期性极化铌酸锂波导中光子对的产生
IF 3.5 2区 物理与天体物理
Chinese Optics Letters Pub Date : 2023-01-01 DOI: 10.3788/col202321.042701
{"title":"Photon pair generation in lithium niobate waveguide periodically poled by femtosecond laser","authors":"","doi":"10.3788/col202321.042701","DOIUrl":"https://doi.org/10.3788/col202321.042701","url":null,"abstract":"","PeriodicalId":10293,"journal":{"name":"Chinese Optics Letters","volume":"110 1 Pt 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":"89748301","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
Experimental realization of strong coupling between a cold atomic ensemble and an optical fiber microcavity 冷原子系综与光纤微腔强耦合的实验实现
IF 3.5 2区 物理与天体物理
Chinese Optics Letters Pub Date : 2023-01-01 DOI: 10.3788/col202321.092702
Li Li, Yu Pan, Yi-Jia Liu, Xiaoping Zhou, Dongfei Huang, Zehao Shen, Jian Wang, Chuan‐Feng Li, G. Guo
{"title":"Experimental realization of strong coupling between a cold atomic ensemble and an optical fiber microcavity","authors":"Li Li, Yu Pan, Yi-Jia Liu, Xiaoping Zhou, Dongfei Huang, Zehao Shen, Jian Wang, Chuan‐Feng Li, G. Guo","doi":"10.3788/col202321.092702","DOIUrl":"https://doi.org/10.3788/col202321.092702","url":null,"abstract":"Cavity quantum electrodynamics (QED) system is a promising platform for quantum optics and quantum information experiments. And its core is the strong coupling between atoms and optical cavity, which causes difficulty in the overlap for the atoms and the antinode of optical cavity mode. Here, we use a programmable movable optical dipole trap to load a cold atomic ensemble into an optical fiber microcavity and realize the strong coupling between the atoms and the optical cavity in which the coupling strength can be improved by polarization gradient cooling and adiabatic loading. By the measurement of vacuum Rabi splitting, the coupling strength can be as high as g N = 2 π × 400 MHz, which means the effective atom number is N ef f = 16 and the collective cooperativity is C N = 1466. These results show this experimental system can be used for cold atomic ensemble and cold molecule based cavity QED research.","PeriodicalId":10293,"journal":{"name":"Chinese Optics Letters","volume":"6 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75628455","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
Photonics 60 GBaud PDM-16QAM fiber-wireless 2 × 2 MIMO delivery at THz-band 光子学60 GBaud PDM-16QAM光纤无线2 × 2 MIMO传输在太赫兹波段
IF 3.5 2区 物理与天体物理
Chinese Optics Letters Pub Date : 2023-01-01 DOI: 10.3788/col202321.073901
Weiping Li, Jianjun Yu, Bowen Zhu, Jiao Zhang, M. Zhu, Chen Wang, Wen Zhou, Tangyao Xie, Jianguo Yu, F. Zhao
{"title":"Photonics 60 GBaud PDM-16QAM fiber-wireless 2 × 2 MIMO delivery at THz-band","authors":"Weiping Li, Jianjun Yu, Bowen Zhu, Jiao Zhang, M. Zhu, Chen Wang, Wen Zhou, Tangyao Xie, Jianguo Yu, F. Zhao","doi":"10.3788/col202321.073901","DOIUrl":"https://doi.org/10.3788/col202321.073901","url":null,"abstract":",","PeriodicalId":10293,"journal":{"name":"Chinese Optics Letters","volume":"42 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72795357","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
Dual photopatterning of rotational fingerprint superstructures 旋转指纹超结构的双光模式
IF 3.5 2区 物理与天体物理
Chinese Optics Letters Pub Date : 2023-01-01 DOI: 10.3788/col202321.041603
Jintao Pan, Jiaxin Qian, Lingling Ma, Zeyu Wang, Ren Zheng, Ning Wang, Bing-Xiang Li, Yanqing Lu
{"title":"Dual photopatterning of rotational fingerprint superstructures","authors":"Jintao Pan, Jiaxin Qian, Lingling Ma, Zeyu Wang, Ren Zheng, Ning Wang, Bing-Xiang Li, Yanqing Lu","doi":"10.3788/col202321.041603","DOIUrl":"https://doi.org/10.3788/col202321.041603","url":null,"abstract":"","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":"72835832","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
Momentum filtering scheme of cooling atomic clouds for the Chinese Space Station 中国空间站冷却原子云的动量滤波方案
IF 3.5 2区 物理与天体物理
Chinese Optics Letters Pub Date : 2023-01-01 DOI: 10.3788/col202321.080201
Hui Li, Biao Wu, Jiachen Yu, X. Yuan, Xiaoji Zhou, Bin Wang, Weibiao Chen, Wei Xiong, Xuzong Chen
{"title":"Momentum filtering scheme of cooling atomic clouds for the Chinese Space Station","authors":"Hui Li, Biao Wu, Jiachen Yu, X. Yuan, Xiaoji Zhou, Bin Wang, Weibiao Chen, Wei Xiong, Xuzong Chen","doi":"10.3788/col202321.080201","DOIUrl":"https://doi.org/10.3788/col202321.080201","url":null,"abstract":"To obtain cold atom samples with temperatures lower than 100 pK in the cold atom physics rack experiment of the Chinese Space Station, we propose to use the momentum filtering method for deep cooling of atoms. This paper introduces the experimental results of the momentum filtering method verified by our ground testing system. In the experiment, we designed a specific experimental sequence of standing-wave light pulses to control the temperature, atomic number, and size of the atomic cloud. The results show that the momentum filter can effectively and conveniently reduce the temperature of the atomic cloud and the energy of Bose – Einstein condensation, and can be flexibly combined with other cooling methods to enhance the cooling effect. This work provides a method for the atomic cooling scheme of the ultra-cold atomic system on the ground and on the space station, and shows a way of deep cooling atoms.","PeriodicalId":10293,"journal":{"name":"Chinese Optics Letters","volume":"22 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86537915","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
Advances in multipass cell for absorption spectroscopy-based trace gas sensing technology [Invited] 基于吸收光谱的多通电池痕量气体传感技术研究进展[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/col202321.033001
Yahui Liu, Yufei Ma
{"title":"Advances in multipass cell for absorption spectroscopy-based trace gas sensing technology [Invited]","authors":"Yahui Liu, Yufei Ma","doi":"10.3788/col202321.033001","DOIUrl":"https://doi.org/10.3788/col202321.033001","url":null,"abstract":"In the field of absorption spectroscopy, the multipass cell (MPC) is one of the key elements. It has the advantages of simple structure, easy adjustment, and high spectral coverage, which is an effective way to improve the detection sensitivity of gas sensing systems such as tunable diode laser absorption spectroscopy. This invited paper summarizes the design theory and the research results of some mainstream types of MPCs based on two mirrors and more than two mirrors in recent years, and briefly introduces the application of some processed products. The design theory of modified ABCD matrix and vector reflection principle are explained in detail. Finally, trends in its development are predicted.","PeriodicalId":10293,"journal":{"name":"Chinese Optics Letters","volume":"52 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88968229","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: 30
Multi-channel spectral-domain optical coherence tomography using single spectrometer 单光谱仪多通道光谱域光学相干层析成像
IF 3.5 2区 物理与天体物理
Chinese Optics Letters Pub Date : 2023-01-01 DOI: 10.3788/col202321.051102
Yukun Wang, Si Chen, Kan Lin, X. Chen, Zhengyang Xu, Shiliang Lou, Xin Ge, Guangming Ni, Xiaojun Yu, J. Mo, Quanquan Mu, Linbo Liu
{"title":"Multi-channel spectral-domain optical coherence tomography using single spectrometer","authors":"Yukun Wang, Si Chen, Kan Lin, X. Chen, Zhengyang Xu, Shiliang Lou, Xin Ge, Guangming Ni, Xiaojun Yu, J. Mo, Quanquan Mu, Linbo Liu","doi":"10.3788/col202321.051102","DOIUrl":"https://doi.org/10.3788/col202321.051102","url":null,"abstract":"","PeriodicalId":10293,"journal":{"name":"Chinese Optics Letters","volume":"1994 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89068197","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
Widely tunable 2 µm optical vortex from a Tm:YAP laser Tm:YAP激光器可宽调谐的2µm光学涡旋
IF 3.5 2区 物理与天体物理
Chinese Optics Letters Pub Date : 2023-01-01 DOI: 10.3788/col202321.021405
Jingjing Zhou, Changsheng Zheng, Bin Chen, Ning Zhang, Qinggang Gao, Hangqi Yuan, D. Jia, Zhanxin Wang, Shande Liu, Yuping Zhang, Huiyun Zhang, Yongguang Zhao
{"title":"Widely tunable 2 µm optical vortex from a Tm:YAP laser","authors":"Jingjing Zhou, Changsheng Zheng, Bin Chen, Ning Zhang, Qinggang Gao, Hangqi Yuan, D. Jia, Zhanxin Wang, Shande Liu, Yuping Zhang, Huiyun Zhang, Yongguang Zhao","doi":"10.3788/col202321.021405","DOIUrl":"https://doi.org/10.3788/col202321.021405","url":null,"abstract":"In this paper, we report on a wide wavelength tuning optical vortex carrying orbital angular momentum (OAM) of ± ħ , from a thulium-doped yttrium aluminum perovskite (YAP) laser employing a birefringent filter. The OAM is experimentally found to be well maintained during the whole wavelength tuning process. The Laguerre – Gaussian (LG 0, (cid:1) 1 ) mode with a tuning range of 58 nm from 1934.8 to 1993.0 nm and LG 0, − 1 mode with a range of 76 nm from 1920.4 to 1996.6 nm, are, respectively, obtained. This is, to the best of our knowledge, the first experimental implementation of wavelength tuning for a scalar vortex laser in the 2 μ m spectral range, as well as the broadest tuning range ever reported from the vortex laser cavity. Such a vortex laser with robust structure and straightforward wavelength tuning capability will be an ideal light source for potential applications in the field of optical communication with one additional degree of freedom.","PeriodicalId":10293,"journal":{"name":"Chinese Optics Letters","volume":"103 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82757207","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
Beam homogenization structure for a laser illuminator design based on diode laser beam combining technology 基于二极管激光束组合技术的激光照明器光束均匀化结构设计
IF 3.5 2区 物理与天体物理
Chinese Optics Letters Pub Date : 2023-01-01 DOI: 10.3788/col202321.031405
Jinliang Han, Jun Zhang, X. Shan, Yawei Zhang, H. Peng, L. Qin, Lijun Wang
{"title":"Beam homogenization structure for a laser illuminator design based on diode laser beam combining technology","authors":"Jinliang Han, Jun Zhang, X. Shan, Yawei Zhang, H. Peng, L. Qin, Lijun Wang","doi":"10.3788/col202321.031405","DOIUrl":"https://doi.org/10.3788/col202321.031405","url":null,"abstract":"With the rapid development of laser technology, laser as the light source of night vision illuminating can realize long-dis-tance and clear imaging, which has been widely used in laser active illuminating field. A high-power diode laser with a wavelength of 808 nm was designed as the laser active illuminating source, and the output power of no less than 100 W was obtained by spatial beam multiplexing, polarization multiplexing, and high efficiency fiber coupling techniques. In view of the beam homogenization of illuminating source, a novel beam homogenization system based on waveguide is proposed in this work. A square spot with a horizontal divergence angle of 40°, a vertical divergence angle of 10°, and an illuminating power ratio of 4:1 was obtained by a collimating lens. Comparing with the traditional circular illuminating beam, the square illuminating beam can match the illuminating angle of CCD camera better, and the energy utilization rate is higher. In addition, by optimizing the structure of waveguide and collimating lens, the illuminating angle can be changed to meet the illuminating requirements under different conditions theoretically.","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":"83029128","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 12th order harmonic mode-locking in a Nd-doped single-mode all-fiber laser operating at 0.9 µm 掺nd单模全光纤激光器12阶谐波锁模的产生，工作波长为0.9µm
IF 3.5 2区 物理与天体物理
Chinese Optics Letters Pub Date : 2023-01-01 DOI: 10.3788/col202321.011405
Bingxin Zhang, Ping Li, Zhaojun Liu, Ming Li, Jing Liu, Haoxu Zhao, Qiongyu Hu, Xiaohan Chen
{"title":"Generation of 12th order harmonic mode-locking in a Nd-doped single-mode all-fiber laser operating at 0.9 µm","authors":"Bingxin Zhang, Ping Li, Zhaojun Liu, Ming Li, Jing Liu, Haoxu Zhao, Qiongyu Hu, Xiaohan Chen","doi":"10.3788/col202321.011405","DOIUrl":"https://doi.org/10.3788/col202321.011405","url":null,"abstract":"Based on the Nd-doped single-mode fiber as the gain medium, an all-fiber 12th harmonic mode-locked (HML) laser operating at the 0.9 μ m waveband was obtained for the first time, to the best of our knowledge. A mandrel with a diameter of 10 mm was employed to introduce bending losses to suppress mode competition at 1.06 μ m, which resulted in a suppression ratio of up to 54 dB. The 1st – 12th order HML pulses with the tunable repetition rate of 494.62 kHz – 5.94 MHz were obtained in the mode-locked laser with a center wavelength of ∼ 904 nm. In addition, the laser has an extremely low threshold pump power of 88 mW. To the best of our knowledge, this is the first time that an HML pulse has been achieved in a 0.9 μ m Nd-doped single-mode all-fiber mode-locked laser with the advantages of low cost, simple structure, and compactness, which could be an ideal light source for two-photon microscopy.","PeriodicalId":10293,"journal":{"name":"Chinese Optics Letters","volume":"22 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83116594","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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