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 language | English |
|---|---|
| Pages (from-to) | 911-913 |
| Number of pages | 3 |
| Journal | Optics Letters |
| Volume | 28 |
| Publication status | Published - 1 Jun 2003 |
Keywords
- 2ND-HARMONIC GENERATION
- WAVE-GUIDES
- CONVERSION