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太赫兹量子阱探测器研究

Research on Terahertz Quantum-Well Photodetectors

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摘要

太赫兹量子阱探测器(THz QWP)是一种工作于太赫兹频段的光子型探测器。本文回顾了THz QWP 近几年在以下方面取得的主要进展:1) 通过考虑多体效应,解决了THz QWP 峰值响应频率精确设计及多量子阱能带结构的优化;采用自洽发射-俘获模型,研究了THz QWP 电子输运问题。2) 提出三种基于金属光栅的THz QWP 光耦合器,这些耦合器能有效改变入射光场的极化方向,使之符合量子阱子带跃迁选择定则,并使光场在多量子阱吸收区局域增强,提高耦合效率,从而提高THz QWP 的探测灵敏度。3) 在THz QWP 中,发现纵光学(LO)声子频率处反常光响应峰,采用LO 声子辅助光场局域增强模型解释了这一反常响应峰的起源。

Abstract

Terahertz quantum-well photodetectors (THz QWPs) are photon-type detectors working in terahertz regime. Recent progress in the development of terahertz QWPs is reviewed in the following aspects. First, by considering the many-particle effects, the response peak frequency and the band structure of terahertz QWPs are calculated and optimized accurately; the electron transport behavior is explored within the self-consistent emissioncapture model. Second, three types of light couplers for terahertz QWPs are introduced. At resonant frequencies, the polarization of the light field is effectively tuned by the light couplers to fulfill the selection rule for intersubband transitions. The electric field intensities in the active multi-quantum-well (MQW) absorption region of terahertz QWPs are also enhanced. Therefore, the sensitivity of terahertz QWPs is improved. Third, the anomalous response peak at the longitudinal optical (LO) phonon frequency of GaAs is found in terahertz QWPs. Such response peak originates from the field enhancement in the MQW absorption layer mediated by LO phonons.

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中图分类号:O472+.8

DOI:10.3788/lop52.092302

所属栏目:光学器件

责任编辑:殷建芳

基金项目:国家自然科学基金(61176086)、国家重大科学仪器设备开发专项(2011YQ150021)

收稿日期:2015-03-05

修改稿日期:2015-03-15

网络出版日期:2015-08-15

作者单位    点击查看

郭旭光: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
顾亮亮: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
符张龙: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
张戎: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
谭智勇: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
曹俊诚: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

联系人作者:郭旭光(xgguo@mail.sim.ac.cn)

备注:郭旭光(1972—),男,博士,研究员,主要从事太赫兹半导体器件方面的研究。

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引用该论文

Guo Xuguang,Gu Liangliang,Fu Zhanglong,Zhang Rong,Tan Zhiyong,Cao Juncheng. Research on Terahertz Quantum-Well Photodetectors[J]. Laser & Optoelectronics Progress, 2015, 52(9): 092302

郭旭光,顾亮亮,符张龙,张戎,谭智勇,曹俊诚. 太赫兹量子阱探测器研究[J]. 激光与光电子学进展, 2015, 52(9): 092302

被引情况

【1】杨旻蔚,季海兵,谭智勇,张慧芳,王球,彭宁嵩,谷建强,朱亦鸣,曹俊诚. 成像与成谱联动的太赫兹分析检测仪. 光学学报, 2016, 36(6): 611004--1

【2】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. 光学学报, 2017, 37(10): 1004001--1

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