Absorption saturation measurement using the tapered optical nanofiber in a hot cesium vapor  

作　　者：Zixuan Song Xingyu Yue Yu Luo Haodong Li Yanting Zhao 宋子旋;岳星宇;罗宇;李好东;赵延霆(State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy,Shanxi University;Collaborative Innovation Center of Extreme Optics, Shanxi University;College of Physics and Electronics Engineering, Shanxi University)

机构地区：[1]State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy,Shanxi University [2]Collaborative Innovation Center of Extreme Optics, Shanxi University [3]College of Physics and Electronics Engineering, Shanxi University

出　　处：《Chinese Optics Letters》2019年第3期71-74,共4页中国光学快报（英文版）

基　　金：supported by the National Key Research and Development program(No.2017YFA0304203);National Natural Science Foundation of China(Nos.61675120,11434007,and 61875110);NSFC Project for Excellent Research Team(No.61121064),Shanxi Scholarship Council of China,"1331 KSC",PCSIRT(No.IRT13076);and Applied Basic Research Project of Shanxi Province(No.201601D202008)

摘　　要：We report the observation of ultralow-power absorption saturation in a tapered optical fiber(TOF) mounted in a hot cesium(Cs) vapor in a vacuum chamber. The small optical mode area of TOF produces a great influence on optical properties, allowing optical interactions with nanowatt-level power. The comparison of transmission characteristics for the TOF system and free-space vapor is investigated at different input power and atomic density. The unique performance of the Cs-TOF system makes it a promising candidate in resonant nonlinear optical applications with ultralow power.We report the observation of ultralow-power absorption saturation in a tapered optical fiber(TOF) mounted in a hot cesium(Cs) vapor in a vacuum chamber. The small optical mode area of TOF produces a great influence on optical properties, allowing optical interactions with nanowatt-level power. The comparison of transmission characteristics for the TOF system and free-space vapor is investigated at different input power and atomic density. The unique performance of the Cs-TOF system makes it a promising candidate in resonant nonlinear optical applications with ultralow power.

关 键 词：Absorption SATURATION MEASUREMENT tapered OPTICAL NANOFIBER CESIUM vapor 

分 类 号：O3[理学—力学]