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Proceedings Paper

Heat transfer speed and phonon related phenomena in terahertz quantum cascade lasers
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Paper Abstract

We report on the measurement of both transverse and in-plane heat transfer speed in GaAs/AlGaAs quantum cascade lasers via time-resolved micro-probe photoluminescence. We found approximately a one order of magnitude reduction in the heat transverse speed with respect to bulk values that we ascribed to the heat interface boundary resistance. We also compared the non equilibrium population of phonons via anti-Stokes Raman scattering in different active region configurations.

Paper Details

Date Published: 12 February 2010
PDF: 8 pages
Proc. SPIE 7616, Novel In-Plane Semiconductor Lasers IX, 761617 (12 February 2010); doi: 10.1117/12.846428
Show Author Affiliations
Gaetano Scamarcio, CNR-INFM Regional Lab. LIT, Univ. degli Studi di Bari (Italy)
Miriam Serena Vitiello, CNR-INFM Regional Lab. LIT, Univ. degli Studi di Bari (Italy)

Published in SPIE Proceedings Vol. 7616:
Novel In-Plane Semiconductor Lasers IX
Alexey A. Belyanin; Peter M. Smowton, Editor(s)

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