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Second-harmonic generation of blue light in a periodically poled LiTaO3 waveguide

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Abstract

The demand for sources of coherent blue light with milliwatt output powers has stimulated much research activity in guided-wave devices for second-harmonic generation (SHG). To address the inability of otherwise-suitable materials to phase-match birefringently, quasi-phase-matching (QPM) has been used for SHG of visible radiation in LiNbO3,1,2 polymer,3 and KTP4 waveguides. This paper reports blue light generated by quasi-phase-matched SHG in a periodically poled LiTaO3 waveguide.

© 1991 Optical Society of America

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