TITLE:
Optimization of Duty Ratio of Metallic Grating Arrays for Infrared Photodetectors
AUTHORS:
Dong Liu, Yongqi Fu, Lechen Yang, Baoshun Zhang, Haijun Li, Kai Fu, Min Xiong
KEYWORDS:
Metallic Gratings, Duty Ratio, Infrared Waveband, QWIP
JOURNAL NAME:
Optics and Photonics Journal,
Vol.1 No.3,
September
30,
2011
ABSTRACT: Influence of duty ratio of metallic gratings applied in quantum well infrared photodetector (QWIP) with detection ranging from 3 μm to 5 μm was studied in this paper. The influence on longer enhanced wavelength working at infrared waveband was investigated. A relationship between the duty ratio and the enhanced peak intensity is given. Some results can be applied to optimize the enhanced efficiency of the metallic gratings.