Archivio Istituzionale della RicercaWe report on the experimental observation of non-equilibrium longitudinal (LO) and interface transverse-like (IF-TO) optical phonons populations associated with electron transport in resonant-phonon THz quantum-cascade lasers. The measured LO-phonon occupation numbers are in excellent agreement with the result of Monte Carlo simulations at a phonon in-plane wave number q=4.2 10^4 cm^-1, and they remain about 40% larger than the IF-TO ones.
Non-equilibrium longitudinal and transverse optical phonons in terahertz quantum cascade lasers / Vitiello, M. S.; Iotti, Rita Claudia; Rossi, Fausto; Mahler, L.; Tredicucci, A.; Beere, H. E.; Ritchie, D. A.; Hu, Q.; Scamarcio, G.. - In: APPLIED PHYSICS LETTERS. - ISSN 0003-6951. - STAMPA. - 100:(2012), pp. 091101-1-091101-4. [10.1063/1.3687913]
Non-equilibrium longitudinal and transverse optical phonons in terahertz quantum cascade lasers
IOTTI, Rita Claudia;ROSSI, FAUSTO;
2012
Abstract
We report on the experimental observation of non-equilibrium longitudinal (LO) and interface transverse-like (IF-TO) optical phonons populations associated with electron transport in resonant-phonon THz quantum-cascade lasers. The measured LO-phonon occupation numbers are in excellent agreement with the result of Monte Carlo simulations at a phonon in-plane wave number q=4.2 10^4 cm^-1, and they remain about 40% larger than the IF-TO ones.
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https://hdl.handle.net/11583/2495887
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