局域光场增强的量子阱红外探测器(特邀)  

Quantum well infrared detector enhanced by local light field(Invited)

作　　者：刘畅[1] 王健[2] 左璇 熊大元[1,2] Liu Chang;Wang Jian;Zuo Xuan;Xiong Dayuan(Shanghai Key Laboratory of Multidimensional Information Processing,East China Normal University,Shanghai 200241,China;Key Laboratory of Polar Materials and Devices,Ministry of Education,East China Normal University,Shanghai 200241,China)

机构地区：[1]华东师范大学上海市多维度信息处理重点实验室,上海200241 [2]华东师范大学极化材料与器件教育部重点实验室,上海200241

出　　处：《红外与激光工程》2021年第1期78-89,共12页Infrared and Laser Engineering

基　　金：上海市科委资助项目(18DZ2270800)。

摘　　要：量子阱红外探测器是继碲镉汞红外探测器之后又一重要的可以在中、长波段和甚长波段工作的红外探测器件。它在长波红外探测、多色探测及其焦平面技术方面表现出比碲镉汞红外探测器更具特色的优势,对量子阱红外探测器的研究将在很大程度上推动我国红外探测器技术的发展。这一探测器的突出优势是其材料均匀性好,制备技术成熟。但是由于量子效率偏低,且无法直接吸收垂直入射红外光,所以需要针对不同的红外探测波段,设计和制备各类光栅或微腔结构来进行光耦合及局域光场增强以有效提升探测器性能。如何更有效提升量子阱红外探测器的光耦合效率,降低暗电流,提高器件工作温度是仍然是目前研究的重点。文中着重介绍和总结了近5年来研究的局域光场增强的新型量子阱红外探测器,从提高探测器光耦合效率、降低器件暗电流和提高工作温度等方面重点讨论各种量子阱红外探测器的新结构和新机理,同时展望了这一探测器的未来发展方向。Quantum well infrared photodetectors(QWIPs)has been considered as another excellent candidate in long-wavelength and very-long-wavelength infrared detection.It shows more distinctive advantages than the traditional HgCdTe technology in long-wave infrared detection,multi-color detection and focal plane technology area.Keep research on QWIPs will greatly promote the development of our country’s infrared detector technology.The outstanding advantages of QWIPs are its good maturity of III–V compound growth and processing techniques.However,due to the low quantum efficiency and the forbiddance of directly normal incident radiation absorption for n-type QW,it is necessary to design and prepare various gratings or microcavity structures for optical coupling and local electromagnetic field enhancement for different detection wavelengths.How to more effectively improve the optical coupling efficiency of QWIPs,reduce dark current,and increase the operating temperature of the device are still the hotspots of current research.The new type of QWIPs with local electromagnetic field enhancement in the past 5 years was emphatically introduced and summarizesd,focusing on the optical coupling,dark current and working temperature.Finally,the development of QWIPs with local electromagnetic field enhancement were given for future work.

关 键 词：量子阱红外探测器 表面等离激元 光耦合 局域光场增强 

分 类 号：TN215[电子电信—物理电子学]