Quasi-phase matched second harmonic generation in GaAs/AlAs superlattice waveguide using ion-implantation induced intermixing

K Zeaiter, DC Hutchings, RM Gwilliam, K Moutzouris, S Venugopal Rao, Majid Ebrahimzadeh

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)

Abstract

We report type I second-harmonic generation by use of first-order quasi-phase matching in a GaAs/AlAs symmetric superlattice structure with femtosecond fundamental pulses at 1.55 mum. Periodic spatial modulation of the bulklike second-order susceptibility chi(zxy)((2)) was achieved with quantum-well intermixing for which the group III vacancies were created by As+-ion implantation. A narrow second-harmonic bandwidth of similar to0.9 nm (FWHM) with an average power of similar to1.5 muW was detected, corresponding to an internal conversion efficiency of similar to0.06%, which was considerably limited by the spectral bandwidth of the fundamental. (C) 2003 Optical Society of America.

Original languageEnglish
Pages (from-to)911-913
Number of pages3
JournalOptics Letters
Volume28
Publication statusPublished - 1 Jun 2003

Keywords

  • 2ND-HARMONIC GENERATION
  • WAVE-GUIDES
  • CONVERSION

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