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２巻１号 （2021年4月） Volume 2, Number 1 (April 2021) |
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解説: 計測用パルス可視・紫外波長変換レーザ pp. 4-9 Technical Review: Visible and UV Laser by Frequency Conversion for Sensing Application 廣橋 淳二，宮﨑 達也，星 正幸，今井 浩一，冨張 康弘 Junji HIROHASHI, Tatsuya MIYAZAKI, Masayuki HOSHI, Koichi IMAI, and Yasuhiro TOMIHARI |
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Abstract Visible and UV lasers for sensing application were investigated. In order to realize compact, relatively high repetition rate, high peak power, and reasonable price pulsed lasers, pulsed fiber laser with 1064 nm, 50 kHz repetition rate, and 1 ns pulsed width laser was selected as a fundamental source. Frequency conversion part, proper non-linear optical materials were selected and the focusing and device dimension were adjusted to achieve compact frequency convertors. For visible(532 nm) laser, convertor size was achieved down to 100 cc size by utilizing PP-Mg:SLT device. For UV(355 nm and 266 nm) lasers, by selecting PP-Mg:SLT, PP-LBGO, and BBO devices, 100~200 mW level output power were achieved with the convertor size of 120~220 cc. Those compact configurations were available for mounting them on drones. |