TITLE

Quasi-phase matched second-harmonic generation in an Al[sub x]Ga[sub 1-x]As asymmetric quantum-well waveguide using ion-implantation-enhanced intermixing

AUTHOR(S)
Bouchard, Jean-Pierre; Tetu, M.; Janz, S.; Xu, D.-X.; Wasilewski, Z. R.; Wasilewski, Z.R.; Piva, P.; Akano, U. G.; Akano, U.G.; Mitchell, I. V.; Mitchell, I.V.
PUB. DATE
December 2000
SOURCE
Applied Physics Letters;12/25/2000, Vol. 77 Issue 26
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Quasi-phase matched second-harmonic generation in the copropagating geometry is demonstrated in an asymmetric quantum-well waveguide. Modulation of the nonlinear susceptibility along the waveguide was achieved using a patterned quantum-well intermixing process. Photoluminescence measurements of the quantum-well bandedges indicate that a grating of alternating regions of intermixed and as-grown asymmetric quantum wells was produced for periods between 2 and 12 μm. The variation of the second-harmonic light intensity generated by guided incident light between λ=1480 and 1600 nm was measured. The resulting second-harmonic spectra show sharp quasi-phase matching resonances for grating periods near 3 μm, demonstrating that a periodic modulation of the quantum-well nonlinear susceptibility was produced. © 2000 American Institute of Physics.
ACCESSION #
4414887

 

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