Highly efficient quasi-phase-matched second-harmonic generation using a first-order periodically domain-inverted LiTaO3 waveguide
- 16 March 1992
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 60 (11) , 1283-1285
- https://doi.org/10.1063/1.107317
Abstract
We report blue-light generation using a first-order quasi-phase matched second-harmonic generation (QPMSHG) in LiTaO3 waveguide. A first-order periodically domain-inverted structure can be fabricated using a quick heat-treatment technique. We have examined the dependence of the depth of the fabricated domain-inverted region on its width, which critically affects the conversion efficiency of SHG, and designed an optimum domain-inverted structure for the QPMSHG device. As a result, 15 mW of blue light was generated for a conversion efficiency of 10.3%.Keywords
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