光学学报, 2017, 37 (10): 1004001, 网络出版: 2018-09-07
多体效应对太赫兹量子阱探测器的影响 下载: 950次
Influence of Many-Body Effect on Terahertz Quantum Well Photodetectors
摘要
设计了一种太赫兹量子阱光电探测器(THz-QWP),并利用该器件研究了多体效应。通过表征和分析器件的光电流谱,发现多体效应改变了器件的峰值响应频率,并且引起了双响应峰现象,从而验证了多体效应能加深有效势阱深度并增大基带与第一激发能级态之间的间距。因此,在THz-QWP的结构设计中,考虑多体效应具有重要意义。
Abstract
A terahertz quantum well photodetector (THz-QWP) is designed and the many-body effect is investigated in this device. By characterizing and analyzing the photo-current spectrum of this device, it is found that the many-body effect changes the peak response frequency and causes the phenomenon of two response peaks, and thus it is confirmed that the many-body effect can deepen the depth of the effective well potential and simultaneously increase the energy spacing between the first excited state and the ground state. Therefore, it is important for the THz-QWP design to take the many-body effect into account.
邵棣祥, 郭旭光, 张戎, 王丰, 符张龙, 王海霞, 姚辰, 周涛, 曹俊诚, 庄松林. 多体效应对太赫兹量子阱探测器的影响[J]. 光学学报, 2017, 37(10): 1004001. Dixiang Shao, Xuguang Guo, Rong Zhang, Feng Wang, Zhanglong Fu, Haixia Wang, Chen Yao, Tao Zhou, Juncheng Cao, Songlin Zhuang. Influence of Many-Body Effect on Terahertz Quantum Well Photodetectors[J]. Acta Optica Sinica, 2017, 37(10): 1004001.