All-solid-state far-UVC pulse laser at 222 nm wavelength for UVC disinfection  

作　　者：罗琪卉 马剑 王淼 陆婷婷 朱小磊 Qihui Luo;Jian Ma;Miao Wang;Tingting Lu;Xiaolei Zhu(Key Laboratory of Space Laser Communication and Detection Technology,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China;Pilot National Laboratory for Marine Science and Technology,Qingdao 266237,China)

机构地区：[1]Key Laboratory of Space Laser Communication and Detection Technology,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China [2]Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China [3]Pilot National Laboratory for Marine Science and Technology,Qingdao 266237,China

出　　处：《Chinese Optics Letters》2023年第1期75-79,共5页中国光学快报（英文版）

基　　金：supported by the Natural Science Foundation of Shanghai(No.19YF1453600);the Key Task Project in Scientific and Technological Research on Social Development of Shanghai(No.20dz1206502);the Strategic Priority Research Program of the Chinese Academy of Sciences(No.XDA22000000);the Major Program of the National Natural Science Foundation of China(No.61991453).

摘　　要：A 222 nm all-solid-state far-ultraviolet C(UVC)pulse laser system based on an optical parametric oscillator(OPO)and second-harmonic generation(SHG)usingβ-Ba2BO4(BBO)crystals was demonstrated.Pumped by a Nd∶Y3Al5O12 laser with a repetition rate of 100 Hz at 355 nm,the maximum signal laser pulse energy of 1.22 mJ at 444 nm wavelength was obtained from the BBO-OPO system,corresponding to a conversion efficiency of 27.9%.The maximum output pulse energy of 164.9μJ at the 222 nm wavelength was successfully achieved,corresponding to an SHG conversion efficiency of 16.2%.Moreover,the tunable output wavelength of UVC light from 210 nm to 252.5 nm was achieved.

关 键 词：all-solid-state pulse laser UVC disinfection optical parametric oscillator second-harmonic generation 

分 类 号：TN248[电子电信—物理电子学] R187[医药卫生—流行病学]