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Infrared antennas coupled to lithographic Fresnel zone plate lenses

被引：44
作者：
González, FJ
Alda, J
Ilic, B
Boreman, GD
机构：
[1] Univ Autonoma San Luis Potosi, Inst Invest Comunicac Opt, San Luis Potosi, Mexico
[2] Univ Complutense Madrid, Sch Opt, Madrid 28037, Spain
[3] Cornell Univ, Cornell NanoScale Sci & Technol Facil, Ithaca, NY 14853 USA
[4] Univ Cent Florida, Sch Opt, Cre Res & Educ Opt & Lasers, Orlando, FL 32816 USA
来源：
APPLIED OPTICS | 2004年 / 43卷 / 33期
关键词：
D O I：
10.1364/AO.43.006067
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Several designs for Fresnel zone plate lenses (FZPLs) to be used in conjunction with antenna-coupled infrared detectors have been fabricated and tested. The designs comprise square and circular FZPLs with different numbers of Fresnel zones working in transmissive or reflective modes designed to focus infrared energy on a square-spiral antenna connected to a microbolometer. A 163x maximum increase in response was obtained from a 15-zone circular FZPL in the transmissive mode. Sensor measurements of normalized detectivity D* resulted in a 2.67x increase with FZPLs compared with measurements made of square-spiral antennas without FZPLs. The experimental results are discussed and compared with values obtained from theoretical calculations. (C) 2004 Optical Society of America.
引用
收藏
页码：6067 / 6073
页数：7
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