Hybrid modes in plasmonic cavity array for enhanced hot-electron photodetection

被引：18
|
作者：
Yang, Zhiqiang [1 ,2 ]
Liu, Min [1 ,2 ]
Liang, Shuhai [1 ,2 ]
Zhang, Wending [1 ,2 ]
Mei, Ting [1 ,2 ]
Zhang, Dawei [3 ,4 ]
Chua, Soo Jin [5 ,6 ]
机构：
[1] Northwestern Polytech Univ, Minist Educ, Key Lab Space Appl Phys & Chem, Xian 710072, Shaanxi, Peoples R China
[2] Northwestern Polytech Univ, Sch Sci, Shaanxi Key Lab Opt Informat Technol, Xian 710072, Shaanxi, Peoples R China
[3] Univ Shanghai Sci & Technol, Minist Educ, Engn Res Ctr Opt Instrument & Syst, 516 JunGong Rd, Shanghai 200093, Peoples R China
[4] Univ Shanghai Sci & Technol, Shanghai Key Lab Modern Opt Syst, 516 JunGong Rd, Shanghai 200093, Peoples R China
[5] Natl Univ Singapore, Dept Elect & Comp Engn, 4 Engn Dr 3, Singapore 117583, Singapore
[6] Singapore MIT Alliance Res & Technol SMART, LEES Program, 1 CREATE Way,10-01 CREATE Tower, Singapore 138602, Singapore
来源：
OPTICS EXPRESS | 2017年 / 25卷 / 17期
关键词：
OPTICAL-ABSORPTION; PHOTOEMISSION; COLLECTION; REGIME;
D O I：
10.1364/OE.25.020268
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The plasmonic characteristics of a periodic array of cavities in a silicon substrate are investigated for hot-electron photodetection. Resonances of cavity surface plasmons bound to air cavities and silicon cavities, and resonance of Bragg-surface plasmon polaritons are illustrated by the map of metal absorption. Hybrid modes formed with combination of these modes can strongly enhance absorption in metal and be exploited to optimize hot-electron photodetectors for single-band and dual-band detection at optical communication wavelengths. (C) 2017 Optical Society of America.
引用
收藏
页码：20268 / 20273
页数：6
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