New resonant cavity-enhanced absorber structures for mid-infrared detector applications

被引：13
|
作者：
Zohar, Moshe [1 ]
Auslender, Mark [1 ]
Faraone, Lorenzo [2 ]
Hava, Shlomo [1 ]
机构：
[1] Ben Gurion Univ Negev, Dept Elect & Comp Engn, IL-84105 Beer Sheva, Israel
[2] Univ Western Australia, Sch Elect Elect & Comp Engn, Crawley, WA 6009, Australia
来源：
OPTICAL AND QUANTUM ELECTRONICS | 2012年 / 44卷 / 3-5期
关键词：
Optical resonant cavity; Photodetectors; HgCdTe; Gratings; MIRROR;
D O I：
10.1007/s11082-011-9515-2
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A new dielectric Fabry-Perot cavity was designed for a resonant enhancing optical absorption by a thin absorber layer embedded into the cavity. In this cavity, the front mirror is a subwavelength grating with similar to 100% retroreflection. For a HgCdTe absorber in a matching cavity of the new type, the design is shown to meet the combined challenges of increasing the absorbing efficiency of the entire device up to similar to 100 % and reducing its size and overall complexity, compared to a conventional resonant cavity enhanced HgCdTe absorber, while maintaining a fairly good tolerance against the grating's fabrication errors.
引用
收藏
页码：95 / 102
页数：8
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