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

页码：95 / 102

页数：8

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