Polarization-dependent photocurrent enhancement, Cross Mark in metamaterial-coupled quantum dots-in-a-well infrared detectors

被引：13

作者：

Sharma, Yagya D. ^{[1
]}

Jun, Young Chul ^{[2
,3
,4
]}

Kim, Jun Oh ^{[1
]}

Brener, Igal ^{[2
,3
]}

Krishna, Sanjay ^{[1
]}

机构：

[1] Univ New Mexico, Ctr High Technol Mat, Albuquerque, NM 87106 USA

[2] Sandia Natl Labs, Albuquerque, NM 87185 USA

[3] Sandia Natl Labs, Ctr Integrated Nanotechnol, Albuquerque, NM 87185 USA

[4] Inha Univ, Dept Phys, Inchon 402751, South Korea

来源：

OPTICS COMMUNICATIONS | 2014年 / 312卷

关键词：

Metamaterial; Plasmonic field enhancement; Infrared photodetectors; LIGHT;

D O I：

10.1016/j.optcom.2013.09.010

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate polarization-dependent photo-response enhancement in metamaterial-coupled quantum dots in a well infrared detectors. A gold split-ring resonator metamaterial layer was patterned by electronbeam lithography in the detector aperture. In this integrated structure, the detector spectral response is given by the convolution of the metamaterial Field enhancement and the original detector response. Our polarization-resolved measurement unambiguously shows that the spectral response can be strongly modified by metamaterial patterning. When the metamaterial resonance matches the QD absorption peak, we obtain a clear enhancement of generated photocurrent Various metamaterial designs can be employed to implement multi-functional detector structures. (c) 2013 The Authors. Published by Elsevier B.V. All rights reserved.

引用

页码：31 / 34

页数：4