title: Large second-harmonic generation at 1.55 μmin oxidized AlGaAs waveguides.
abstract: We report on CW second-harmonic generation in selectively oxidized AlGaAs multilayer waveguides. Frequency doubling of a 1.55 μm pump is observed with 2.8% W(-1) conversion efficiency and a maximum second-harmonic power around 0.3 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.
authors.affiliation: Université Paris Diderot, Sorbonne Paris Cité, Laboratoire Matériaux et Phénomènes Quantiques, CNRS-UMR 7162, Case courrier 7021, 75205 Paris Cedex 13, France.
authors.forename: M
authors.initials: M
authors.lastname: Savanier
authors.forename: A
authors.initials: A
authors.lastname: Andronico
authors.forename: A
authors.initials: A
authors.lastname: Lemaître
authors.forename: E
authors.initials: E
authors.lastname: Galopin
authors.forename: C
authors.initials: C
authors.lastname: Manquest
authors.forename: I
authors.initials: I
authors.lastname: Favero
authors.forename: S
authors.initials: S
authors.lastname: Ducci
authors.forename: G
authors.initials: G
authors.lastname: Leo