多体效应对太赫兹量子阱探测器的影响  

Influence of Many-Body Effect on Terahertz Quantum Well Photodetectors

作　　者：邵棣祥 郭旭光 张戎[2] 王丰[2] 符张龙 王海霞 姚辰[2] 周涛[2] 曹俊诚[2] 庄松林[1] Shao Dixiang;Guo Xuguang;Zhang Rong;Wang Fengz;Fu Zhanglong;Wang Haixia;Yao Chen;Zhou Taoz;Cao Juncheng;Zhuang Songlin(School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;Key Laboratory of Terahertz Solid-State Technology, Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences, Shanghai 200050, China)

机构地区：[1]上海理工大学光电信息与计算机工程学院,上海200093 [2]中国科学院上海微系统与信息技术研究所太赫兹固态技术重点实验室,上海200050

出　　处：《光学学报》2017年第10期49-54,共6页Acta Optica Sinica

基　　金：国家973计划(2014CB339803);国家重大科学仪器设备开发专项(2011YQ150021);国家自然科学基金(61574155;61404149;61404150;61405233;61604161);上海市科学技术委员会资助项目(15ZR1447500;15YF1414400;15JC1403800;15DZ0500103;17YF1429900)

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。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.

关 键 词：探测器 太赫兹 量子阱 多体效应 光电探测器 

分 类 号：TN3[电子电信—物理电子学]