Plasmon enhancements for FIR detection

被引：0

作者：

Perera, A. G. U. ^{[1
]}

Matsik, S. G. ^{[1
]}

Jayaweera, P. V. V. ^{[1
]}

Huang, D. H. ^{[2
]}

Liu, H. C. ^{[3
]}

Buchanan, M. ^{[3
]}

机构：

[1] Georgia State Univ, Dept Phys & Astron, Atlanta, GA 30303 USA

[2] US Air Force, Res Lab, Kirtland AFB, NM USA

[3] CNR, Inst Microstruct Sci, Ottawa, ON, Canada

来源：

2007 IEEE SENSORS, VOLS 1-3 | 2007年

关键词：

D O I：

10.1109/ICSENS.2007.4388428

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

The use of plasmons to improve the response of FIR and THz detectors is generating extensive interest. Increased absorption due to the plasmonic absorption in a GaAs wafer with a thin oxide layer and a metal grid is reported. As expected, an absorption peak for E perpendicular to the grid is observed with peak wavelength varying from 12.6 to 14.3 mu m as the grid period varies from 3.6 to 4.5 mu m. The absorption peak wavelength obeys the equation sin theta/lambda + n/a = alpha/lambda with an experimentally determined value of 3.1 for alpha. The plasmon absorption is similar to 25% and incorporation of plasmon effects into FIR detectors could lead to enhanced response.

引用

页码：431 / 434

页数：4

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