Quasiphase matched surface emitting second harmonic generation in periodically reversed asymmetric GaAs/AlGaAs quantum well waveguide

A. Fiore, Y. Beaulieu, S. Janz, J.P. McCaffrey, Z.R. Wasilewski, D.X. Xu

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

The authors exptl. demonstrate surface-emitting 2nd harmonic generation in a waveguide contg. asym. coupled GaAs/AlGaAs quantum wells. The nonlinear conversion efficiency is enhanced by reversing the asym. well orientation every coherence length, to quasiphase match the vertical 2nd harmonic generation process. The measured spectrum of the asym. quantum well susceptibility is dominated by an excitonic peak at a pump frequency corresponding to half of the 1st electron-heavy hole transition energy. [on SciFinder (R)]
Original languageEnglish
Pages (from-to)2655-2657
Number of pages3
JournalApplied Physics Letters
Volume70
Issue number20
DOIs
Publication statusPublished - 1997

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