Non-equilibrium longitudinal and transverse optical phonons in terahertz quantum cascade lasers

被引：23

作者：

Vitiello, Miriam S. ^{[1
,2
]}

Iotti, Rita C. ^{[3
]}

Rossi, Fausto ^{[3
]}

Mahler, Lukas ^{[4
,5
]}

Tredicucci, Alessandro ^{[4
,5
]}

Beere, Harvey E. ^{[6
]}

Ritchie, David A. ^{[6
]}

Hu, Qing ^{[7
,8
]}

Scamarcio, Gaetano ^{[1
,2
]}

机构：

[1] Univ Bari, CNR, Ist Foton & Nanotecnol UOS Bari, I-70126 Bari, Italy

[2] Univ Bari, Dipartimento Interateneo Fis M Merlin, I-70126 Bari, Italy

[3] Politecn Torino, Dipartimento Sci Applicata & Tecnol, I-10129 Turin, Italy

[4] Ist Nanosci, CNR, NEST, I-56127 Pisa, Italy

[5] Scuola Normale Super Pisa, I-56127 Pisa, Italy

[6] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

[7] MIT, Dept Elect Engn & Comp Sci, Cambridge, MA 02139 USA

[8] MIT, Elect Res Lab, Cambridge, MA 02139 USA

来源：

APPLIED PHYSICS LETTERS | 2012年 / 100卷 / 09期

基金：

英国工程与自然科学研究理事会;

关键词：

TEMPERATURE;

D O I：

10.1063/1.3687913

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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 x 10(+4) cm(-1), and they remain about 40% larger than the IF-TO ones. (C) 2012 American Institute of Physics. [doi:10.1063/1.3687913]

引用

页数：4

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