We measured the electronic and lattice temperatures in steady-state operating GaAs/AlGaAs quantum-cascade lasers, by means of microprobe band-to-band photoluminescence. Thermalized hot-electron distributions with temperatures up to 800 K are established. The comparison of our data with the analysis of the temperature dependence of device optical performances shows that the threshold current is determined by the lattice temperature.
Simultaneous measurement of the electronic and lattice temperatures in GaAs/Al0.45Ga0.55As quantum-cascade lasers: influence on the optical performance / Spagnolo, V.; Scamarcio, G.; Page, H.; Sirtori, C.. - In: APPLIED PHYSICS LETTERS. - ISSN 0003-6951. - STAMPA. - 84:18(2004), pp. 3690-3692. [10.1063/1.1739518]
Simultaneous measurement of the electronic and lattice temperatures in GaAs/Al0.45Ga0.55As quantum-cascade lasers: influence on the optical performance
Spagnolo, V.;
2004-01-01
Abstract
We measured the electronic and lattice temperatures in steady-state operating GaAs/AlGaAs quantum-cascade lasers, by means of microprobe band-to-band photoluminescence. Thermalized hot-electron distributions with temperatures up to 800 K are established. The comparison of our data with the analysis of the temperature dependence of device optical performances shows that the threshold current is determined by the lattice temperature.| File | Dimensione | Formato | |
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