Abstract

We report highly efficient blue-light generation by frequency doubling of a high-frequency superimposed laser diode, stabilized by a grating feedback technique, in a periodically domain-inverted LiTaO₃ waveguide. To increase second-harmonic generation conversion efficiency, we enhanced the peak power of the laser diode by using a gain-switching method. Locking the oscillation wavelength of the laser diode by the grating feedback technique, we obtained 4.5 mW of average blue-light power with 13% conversion efficiency.

© 1995 Optical Society of America

49 mW of cw blue light generated by first-order quasi-phase-matched frequency doubling of a diode-pumped 946-nm Nd:YAG laser

V. Pruneri, R. Koch, P. G. Kazansky, W. A. Clarkson, P. St. J. Russell, and D. C. Hanna
Opt. Lett. 20(23) 2375-2377 (1995)

Efficient direct diode-laser frequency doubling in quasi-phase-matched LiNbO₃ waveguides

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V. Pruneri, S. D. Butterworth, and D. C. Hanna
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Intracavity second-harmonic generation with a periodically domain-inverted LiTaO3 device

Yasuo Kitaoka, Kiminori Mizuuchi, Kazuhisa Yamamoto, Makoto Kato, and Takatomo Sasaki
Opt. Lett. 21(24) 1972-1974 (1996)