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

被引：5
|
作者：
Luo, Qihui [1 ,2 ]
Ma, Jian [1 ]
Wang, Miao [1 ,2 ]
Lu, Tingting [1 ]
Zhu, Xiaolei [1 ,2 ,3 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Key Lab Space Laser Commun & Detect Technol, Shanghai 201800, Peoples R China
[2] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China
[3] Pilot Natl Lab Marine Sci & Technol, Qingdao 266237, Peoples R China
来源：
CHINESE OPTICS LETTERS | 2023年 / 21卷 / 01期
基金：
上海市自然科学基金; 中国国家自然科学基金;
关键词：
all-solid-state pulse laser; UVC disinfection; optical parametric oscillator; second-harmonic generation;
D O I：
10.3788/COL202321.011401
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
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) using beta-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 164.9 mu J 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.
引用
收藏
页数：5
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