Abstract

We report on CW second-harmonic generation in selectively oxidized AlGaAs multilayer waveguides. Frequency doubling of a 1.55μm pump is observed with 2.8%W1 conversion efficiency and a maximum second-harmonic power around 0.3mW. This is the strongest second-harmonic generation ever reported in semiconductor waveguides and an encouraging result toward integrated spontaneous parametric downconversion in the telecom range.

© 2011 Optical Society of America

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