Tunable narrow-linewidth 226 nm laser for hypersonic flow velocimetry
| Autor: | Jing Deng, Gong Hongming, Hui Zheng, Zhang Zhi, Wen Weng, Wu Lixia, Jiang Tao, Wu Hongchun, Dai Shutao, Wenxiong Lin |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
business.industry Expansion tunnel 02 engineering and technology Velocimetry 021001 nanoscience & nanotechnology Laser 01 natural sciences Atomic and Molecular Physics and Optics Fluorescence spectroscopy law.invention 010309 optics Laser linewidth Planar Optics law 0103 physical sciences Sapphire 0210 nano-technology Laser-induced fluorescence business |
| Zdroj: | Optics letters. 45(8) |
| ISSN: | 1539-4794 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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