Title :
Hot phonons in quantum cascade lasers
Author :
Spagnolo, V. ; Troccoli, Mariano ; Scamarcio, G. ; Gmachl, C. ; Tredicucci, A. ; Capasso, Federico ; Hutchinson, A.L. ; Sivco, D.L. ; Cho, Andrew Y.
Author_Institution :
INFM, Politecnico di Bari, Italy
Abstract :
Summary form only. We report evidence of non-equilibrium population of interface phonons in cw operated quantum cascade lasers, obtained by micro-probe Raman and photoluminescence measurements. Interface phonon lifetimes of 1 ps (0.8 ps) at 116 K (193 K) lattice temperatures, are estimated.
Keywords :
Raman spectra; hot carriers; interface phonons; photoluminescence; quantum well lasers; 0.8 ps; 1 ps; 116 K; 193 K; cw operated quantum cascade lasers; hot phonons; interface phonon lifetimes; interface phonons; lattice temperatures; micro-probe Raman spectra; non-equilibrium population; photoluminescence measurements; quantum cascade lasers; Optical materials; Phonons; Quantum cascade lasers;
Conference_Titel :
Lasers and Electro-Optics Europe, 2000. Conference Digest. 2000 Conference on
Conference_Location :
Nice
Print_ISBN :
0-7803-6319-1
DOI :
10.1109/CLEOE.2000.910100
