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Proceedings Paper

Compact SHG green lasers
Author(s): Yasuo Kitaoka; Kiminori Mizuuchi; Kazuhisa Yamamoto; Makoto Kato; Wang Long Zhou; Takatomo Sasaki
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Paper Abstract

The combination of a laser material Nd:YVO4 and a nonlinear crystal KTiOPO4 (KTP) is a promising method for intracavity second harmonic generation (SHG) of laser diode pumped solid state lasers. A wavelength locking system, based on an optical feedback technique, is shown to contribute to locking the lasing wavelength of laser diode to the peak absorption wavelength of Nd:YVO4 and generating stable green light. By applying the wavelength locking system to multi-longitudinal mode laser diode, a continuous green light of 31 mW is efficiently generated for pumping power of 121 mW. The noise characteristics of generated green light are discussed in two cases of using a single or a multi-longitudinal mode laser diode as a pumping source. Moreover, SHG green laser of 3.1 cc is fabricated to gain output power of 2.8 mW using the wavelength locking with an optical bandpass filter as a wavelength selective optical component, which has advantages as more compactness and less accurate alignment.

Paper Details

Date Published: 12 April 1996
PDF: 8 pages
Proc. SPIE 2682, Laser Diodes and Applications II, (12 April 1996); doi: 10.1117/12.237673
Show Author Affiliations
Yasuo Kitaoka, Matsushita Electric Industrial Co., Ltd. (Japan)
Kiminori Mizuuchi, Matsushita Electric Industrial Co., Ltd. (Japan)
Kazuhisa Yamamoto, Matsushita Electric Industrial Co., Ltd. (Japan)
Makoto Kato, Matsushita Electric Industrial Co., Ltd. (Japan)
Wang Long Zhou, Osaka Univ. (Japan)
Takatomo Sasaki, Osaka Univ. (Japan)

Published in SPIE Proceedings Vol. 2682:
Laser Diodes and Applications II
Kurt J. Linden; Prasad R. Akkapeddi, Editor(s)

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