Metal sphere array for long wavelength quantum well infrared photodetectors optical coupling
-
Published:2007
Issue:11
Volume:56
Page:6648
-
ISSN:1000-3290
-
Container-title:Acta Physica Sinica
-
language:
-
Short-container-title:Acta Phys. Sin.
Author:
Xiong Da-Yuan ,Li Zhi-Feng ,Chen Xiao-Shuang ,Li Ning ,Zhen Hong-Lou ,Lu Wei ,
Abstract
A two-dimensional (2D) metal (Copper) sphere array is designed for the optical coupling of 9.5μm long-wavelength quantum well infrared photodetectors (LW-QWIPs). The optical coupling is studied based on Huygens' principle. It was shown that a metal sphere array with 3μm period and 0.9μm radius can reach optimal optical coupling for the 9.5μm LW-QWIPs. The maximal quantum efficiency hits 66%, which is highly superior to the conventional 45° angle coupling. The theoretical results provide detailed guidelines for 2D metal sphere array optical coupling for 9.5μm LW-QWIPs.
Publisher
Acta Physica Sinica, Chinese Physical Society and Institute of Physics, Chinese Academy of Sciences
Subject
General Physics and Astronomy
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献