Surface Plasmon Nanoantenna-Based Photodetector with Terahertz Electrical Bandwidth

被引：0
|
作者：
Mousavi, Saba Siadat [1 ,2 ,3 ]
Berini, Pierre [1 ,2 ,3 ]
Stoehr, Andreas [4 ]
机构：
[1] Univ Ottawa, Sch Elect Engn & Comp Sci, Ottawa, ON, Canada
[2] Univ Ottawa, Dept Phys, Ottawa, ON, Canada
[3] Univ Ottawa, Ctr Res Photon, Ottawa, ON, Canada
[4] Univ Duisburg Essen, Inst Optoelect, D-47057 Duisburg, Germany
来源：
2014 INTERNATIONAL TOPICAL MEETING ON MICROWAVE PHOTONICS (MWP) AND THE 2014 9TH ASIA-PACIFIC MICROWAVE PHOTONICS CONFERENCE (APMP) | 2014年
关键词：
photodetector; nanoantenna; surface plasmon; THz; PHOTODIODES; POWER;
D O I：
暂无
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A surface plasmon nanoantenna-based photodetector is proposed and investigated. An array of nanodipoles on an InP substrate is assumed, where the detection region consists of volumes of InGaAs located in the gaps of the nanodipoles. The responsivity of the photodetector is estimated to be similar to 100 mA/W at its peak value. A trend is observed for the power absorption in the detection region as a function of gap size; an optimum gap size exists that maximizes the product of the gap volume and the electric field enhancement in the gap. The 3 dB electrical bandwidth of the device is calculated assuming conventional and ballistic carrier transit in the detection region, yielding 0.7-4 THz.
引用
收藏
页码：427 / 429
页数：3
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