Abstract

We report on CW second-harmonic generation in selectively oxidized AlGaAs multilayer waveguides. Frequency doubling of a $1.55\mathrm{\mu m}$ pump is observed with $2.8\%{\mathrm{W}}^{-1}$ conversion efficiency and a maximum second-harmonic power around $0.3\mathrm{mW}$. 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

Nearly-degenerate three-wave mixing at 1.55 μm in oxidized AlGaAs waveguides

Marc Savanier, Alessio Andronico, Aristide Lemaître, Christophe Manquest, Ivan Favero, Sara Ducci, and Giuseppe Leo
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Efficient continuous wave second harmonic generation pumped at 1.55 μm in quasi-phase-matched AlGaAs waveguides

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Design and analysis of enhanced second harmonic generation in AlGaAs/AlO_x microring waveguide

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Opt. Express 19(10) 9408-9418 (2011)