共 50 条
Phonon sidebands of intersubband absorption in AlGaN/GaN high-electron-mobility transistors
被引:0
|作者:
Wang, Z.
Reimann, K.
[1
]
Woerner, M.
Elsaesser, T.
Hofstetter, D.
Hwang, J.
Schaff, W. J.
Eastman, L. F.
机构:
[1] Max Born Inst Nichlineare Opt & Kurzzeitspektrosk, D-12489 Berlin, Germany
[2] Univ Neuchatel, Inst Phys, CH-2000 Neuchatel, Switzerland
[3] Cornell Univ, Ithaca, NY 14853 USA
来源:
关键词:
phonon sidebands;
GaN/AlGaN heterostructure;
intersubband transition;
independent boson model;
D O I:
10.1016/j.physe.2005.12.132
中图分类号:
TB3 [工程材料学];
学科分类号:
0805 ;
080502 ;
摘要:
Femtosecond two-color pump-probe experiments in the mid-infrared are performed on intersubband transitions in a GaN/Al0.8Ga0.2N heterostructure. In these experiments, we observe around zero time delay distinct phonon sidebands, which disappear because of spectral diffusion with a time constant of 80 fs. The signal itself decays with a time constant of 380 fs. The independent boson model agrees very well with all observed results. (c) 2006 Elsevier B.V. All rights reserved.
引用
下载
收藏
页码:562 / 565
页数:4
相关论文