Simultaneous measurement of the electronic and lattice temperatures in GaAs/Al0.45Ga0.55As quantum-cascade lasers: Influence on the optical performance
- 3 May 2004
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 84 (18), 3690-3692
- https://doi.org/10.1063/1.1739518
Abstract
We measured the electronic and lattice temperatures in steady-state operating GaAs/AlGaAs\ud quantum-cascade lasers, by means of microprobe band-to-band photoluminescence. Thermalized\ud hot-electron distributions with temperatures up to 800 K are established. The comparison of our data\ud with the analysis of the temperature dependence of device optical performances shows that the\ud threshold current is determined by the lattice temperatureKeywords
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