Gain and index measurements in GaAlAs quantum well lasers
- 1 July 1990
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 2 (7) , 464-466
- https://doi.org/10.1109/68.56626
Abstract
Measurements of the modal gain and group index in GaAlAs single-quantum-well (SQW) lasers are presented. The elimination of substrate emission has allowed accurate results to be obtained even in the near-bandgap and below-bandgap spectral regions. Substantial lifetime broadening is observed, and the gain smoothly goes to zero as the bandgap is approached. The group velocity index measurements indicate a dispersion of -3.44 mu m/sup -1/.Keywords
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