Efficient optical coupling in AlGaN/GaN quantum well infrared photodetector via quasi-one-dimensional gold grating

• Published in: Optics express Vol. 23; no. 7; pp. 8740 - 8748
• Main Authors: Wang, S, Tian, W, Wu, F, Zhang, J, Dai, J N, Wu, Z H, Fang, Y Y, Tian, Y, Chen, C Q
• Format: Journal Article
• Language: English
• Published: United States 06.04.2015

In this letter, a new kind of grating, quasi-one-dimensional gold grating, has been proposed to enhance the optical coupling in AlGaN/GaN quantum well infrared photodetector (QWIP). The electric field distribution, current density and energy flow are analyzed by an algorithm of finite element method...