We measured the lattice temperature (T L) distribution, the cross-plane thermal conductivity (k̇) and the thermal boundary resistance (TBR) of the GaAsAl 0.15Ga 0.85As quantum cascade lasers (QCLs) operating at 2.83 THz in the heat sink temperature range 45300 K. This information was extracted from the analysis of microprobe band-to-band photoluminescence in QCLs operating in continuous wave. Both k ̇ and TBR decrease monotonically at increasing temperature, the main influence on k ̇ arising from the high density of interfaces
Temperature dependence of thermal conductivity and boundary resistance in THz quantum cascade lasers / Vitiello, M. S.; Scamarcio, G.; Spagnolo, Vincenzo Luigi. - In: IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS. - ISSN 1077-260X. - 14:2(2008), pp. 431-435. [10.1109/JSTQE.2007.910102]
Temperature dependence of thermal conductivity and boundary resistance in THz quantum cascade lasers
SPAGNOLO, Vincenzo Luigi
2008-01-01
Abstract
We measured the lattice temperature (T L) distribution, the cross-plane thermal conductivity (k̇) and the thermal boundary resistance (TBR) of the GaAsAl 0.15Ga 0.85As quantum cascade lasers (QCLs) operating at 2.83 THz in the heat sink temperature range 45300 K. This information was extracted from the analysis of microprobe band-to-band photoluminescence in QCLs operating in continuous wave. Both k ̇ and TBR decrease monotonically at increasing temperature, the main influence on k ̇ arising from the high density of interfacesI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
