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

IF 3.3 2区物理与天体物理 Q2 OPTICS

Chinese Optics Letters Pub Date : 2023-01-01 DOI:10.3788/col202321.011401

Qi Luo, Jian Ma, Miao Wang, Tingting Lu, Xiaolei Zhu

引用次数: 1

Abstract

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 β -Ba 2 BO 4 (BBO) crystals was demonstrated. Pumped by a Nd ∶ Y 3 Al 5 O 12 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 μ 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.

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222nm波长全固态远紫外脉冲激光器用于UVC消毒

研究了一种基于光学参量振荡器(OPO)和β - ba2bo4 (BBO)晶体二次谐波产生(SHG)的222 nm全固态远紫外(UVC)脉冲激光系统。采用重复频率为100 Hz的Nd∶y3al5o12激光器在355 nm处泵浦，BBO-OPO体系在444 nm处获得了1.22 mJ的最大信号激光脉冲能量，转换效率为27.9%。在222 nm波长处成功地获得了最大输出脉冲能量164.9 μ J，对应的SHG转换效率为16.2%。实现了210 ~ 252.5 nm的UVC光输出波长可调。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Chinese Optics Letters 物理-光学

CiteScore

5.60

自引率

20.00%

发文量

180

审稿时长

2.3 months

期刊介绍： Chinese Optics Letters (COL) is an international journal aimed at the rapid dissemination of latest, important discoveries and inventions in all branches of optical science and technology. It is considered to be one of the most important journals in optics in China. It is collected by The Optical Society (OSA) Publishing Digital Library and also indexed by Science Citation Index (SCI), Engineering Index (EI), etc. COL is distinguished by its short review period (~30 days) and publication period (~100 days). With its debut in January 2003, COL is published monthly by Chinese Laser Press, and distributed by OSA outside of Chinese Mainland.