%0 Journal Article %T Optimization of Duty Ratio of Metallic Grating Arrays for Infrared Photodetectors %A Dong Liu %A Yongqi Fu %A Lechen Yang %A Baoshun Zhang %A Haijun Li %A Kai Fu %A Min Xiong %J Optics and Photonics Journal %P 97-100 %@ 2160-889X %D 2011 %I Scientific Research Publishing %R 10.4236/opj.2011.13016 %X Influence of duty ratio of metallic gratings applied in quantum well infrared photodetector (QWIP) with detection ranging from 3 &#956m to 5 &#956m 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. %K Metallic Gratings %K Duty Ratio %K Infrared Waveband %K QWIP %U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=7685