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Optics Letters

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  • Vol. 24, Iss. 22 — Nov. 15, 1999
  • pp: 1590–1592

31%-efficient blue second-harmonic generation in a periodically poled MgO:LiNbO3 waveguide by frequency doubling of an AlGaAs laser diode

Tomoya Sugita, Kiminori Mizuuchi, Yasuo Kitaoka, and Kazuhisa Yamamoto  »View Author Affiliations


Optics Letters, Vol. 24, Issue 22, pp. 1590-1592 (1999)
http://dx.doi.org/10.1364/OL.24.001590


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Abstract

We present a method of controlling the shape of the domain-inverted structure in an off-cut MgO:LiNbO<sub>3</sub> crystal by utilizing a two-dimensional high-voltage application. With this technique a periodically domain-inverted structure with a period of 3.2μm and a thickness of 2.0μm was fabricated over a 10-mm interaction length. This structure has made possible sufficient overlaps between propagation modes and domain inversion in the waveguide. Using this structure, we demonstrated cw blue second-harmonic generation of 17.3 mW of power at a wavelength of 426 nm with single-pass 55-mW cw AlGaAs laser diode input, which corresponded to 31% power-conversion efficiency.

© 1999 Optical Society of America

OCIS Codes
(160.2260) Materials : Ferroelectrics
(190.2620) Nonlinear optics : Harmonic generation and mixing
(230.7370) Optical devices : Waveguides

Citation
Tomoya Sugita, Kiminori Mizuuchi, Yasuo Kitaoka, and Kazuhisa Yamamoto, "31%-efficient blue second-harmonic generation in a periodically poled MgO:LiNbO3 waveguide by frequency doubling of an AlGaAs laser diode," Opt. Lett. 24, 1590-1592 (1999)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-24-22-1590


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