Title :
Quasi-phase-matching in GaAs-AlAs superlattice waveguides via bandgap tuning using quantum well intermixing
Author :
Helmy, A.S. ; Hutchings, D.C. ; Kleckner, T.C. ; Marsh, J.H. ; Bryce, A.C. ; Arnold, J.M. ; Stanley, C.R. ; Aitchison, J.S. ; Brown, C.T.A. ; Moutzouris, K. ; Ebrahimzadeh, M.
Author_Institution :
Dept. of Electron. & Electr. Eng., Glasgow Univ., UK
Abstract :
We report the observation of quasi-phase-matched second harmonic generation in GaAs-AlAs superlattice waveguides. Quasi-phase-matching was achieved by modulating the bulk-like second-order susceptibility with a bandgap shift, induced using selective area quantum well intermixing.
Keywords :
nonlinear optical susceptibility; optical harmonic generation; optical phase matching; optical tuning; optical waveguides; semiconductor quantum wells; semiconductor superlattices; GaAs-AlAs; GaAs-AlAs superlattice waveguides; bandgap shift; bandgap tuning; bulk-like second-order susceptibility; optical SHG; quantum well intermixing; quasi-phase-matched second harmonic generation; quasi-phase-matching; selective area quantum well intermixing; Frequency conversion; Gallium arsenide; Laser tuning; Nonlinear optics; Optical frequency conversion; Optical harmonic generation; Optical waveguides; Photonic band gap; Semiconductor waveguides; Superlattices;
Conference_Titel :
Nonlinear Optics: Materials, Fundamentals, and Applications, 2000. Technical Digest
Conference_Location :
Kaua´i-Lihue, HI, USA
Print_ISBN :
1-55752-646-X
DOI :
10.1109/NLO.2000.883608
