Tunable narrow-linewidth 226 nm laser for hypersonic flow velocimetry

被引：15

作者：

Dai, Shutao ^{[1
]}

Jiang, Tao ^{[2
]}

Wu, Hongchun ^{[1
]}

Zhang, Zhi ^{[1
]}

Wu, Lixia ^{[1
]}

Gong, Hongming ^{[2
]}

Weng, Wen ^{[1
,3
]}

Deng, Jing ^{[1
,3
]}

Zheng, Hui ^{[1
]}

Lin, Wenxiong ^{[1
]}

机构：

[1] Chinese Acad Sci, Fujian Inst Res Struct Matter, Key Lab Optoelect Mat Chem & Phys, Fuzhou 350002, Peoples R China

[2] China Aerodynam Res & Dev Ctr, Mianyang 621000, Sichuan, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

OPTICS LETTERS | 2020年 / 45卷 / 08期

关键词：

FLUORESCENCE; COMBUSTION;

D O I：

10.1364/OL.390347

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on the development and application of a novel, to the best of our knowledge, all-solid-state tunable narrow-linewidth 226 nm UV laser system. The laser system consists of three parts: a tunable single-frequency Ti:sapphire 787 nm laser, a single-frequency long-pulse-width flattop-shaped 532 nm laser, and a nonlinear frequency transformation system. The 532 nm laser is a sum-frequency mixed with the second harmonic of the 787 nm laser to produce the 226 nm laser. The maximum output pulse energy at 226 nm is 3 mJ. Nitric oxide planar laser-induced fluorescence velocimetry is demonstrated in the China Aerodynamics Research and Development Center's FD14 hypersonic shock tunnel using this 226 nm laser system. It is proven that this laser is convenient for high-resolution molecular tagging fluorescence spectroscopy. (C) 2020 Optical Society of America

引用

页码：2291 / 2294

页数：4

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