Femtosecond gain dynamics in InGaAs/AlGaAs strained-layer single-quantum-well diode lasers
- 5 July 1993
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 63 (1) , 96-98
- https://doi.org/10.1063/1.109709
Abstract
We report the first investigation of femtosecond gain dynamics in InGaAs/AlGaAs strained‐layer single‐quantum‐well diode lasers using a multiple‐wavelength pump probe technique. Studies demonstrate that carrier temperature changes from free‐carrier absorption and stimulated transitions strongly govern transient gain dynamics. The energy of the pump wavelength relative to the transparency point determines which processes dominate the transient response. Stimulated carrier cooling is observed for the first time in these materials.Keywords
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