Acoustic band engineering in terahertz quantum-cascade lasers and arbitrary superlattices
Acoustic band engineering in terahertz quantum-cascade lasers and arbitrary superlattices
复制标题
太赫兹量子级联激光器和任意超晶格中的声带工程
DOI:
10.1103/physrevb.107.235411
复制
发表时间:
2023
影响因子:
3.7
通讯作者:
Demic A
中科院分区:
文献类型:
--
作者:
Demic A
We present theoretical methods for the analysis of acoustic phonon modes in superlattice structures, and terahertz-frequency quantum-cascade lasers (THz QCLs). Our generalized numerical solution of the acoustic-wave equation provides good agreement with experimental pump-probe measurements of the acoustic resonances in a THz QCL. We predict that the detailed layer structure in THz QCLs imprints up todetuning of the acoustic mode spacing, which cannot be seen in analytical models. This effect is strongest in devices with large and abrupt acoustic mismatch between layers. We use an acoustic deformation potential within a density-matrix approach to analyze electron transport induced in a range of the most common THz QCL active-region design schemes. We conclude that acoustic modes up toare capable of significantly perturbing QCL transport, highlighting their potential for ultrafast modulation of laser emission.
登录
查看更多内容
影响因子:
5.5
作者:
Poyser C
通讯作者:
Poyser C
影响因子:
3.2
作者:
A. Jiang;A. Màtyàs;K. Vijayraghavan;C. Jirauschek;Z. Wasilewski;M. Belkin
通讯作者:
A. Jiang;A. Màtyàs;K. Vijayraghavan;C. Jirauschek;Z. Wasilewski;M. Belkin
影响因子:
35
作者:
Barbieri, Stefano;Ravaro, Marco;Davies, A. Giles
通讯作者:
Davies, A. Giles
DOI:
10.1109/irmmw-thz.2019.8874441
发表时间:
2019
期刊:
--
影响因子:
--
作者:
Dunn A
通讯作者:
Dunn A
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
O. Jonasson;Irena Knezevic
通讯作者:
Irena Knezevic