Metallic cylinder arrays as optical coupler for quantum well infrared photo-detector

Author

Ding, J.Y. ; Li, Qifeng ; Ni, Bingbing ; Li, G.H. ; Li, Z.F. ; Chen, X.S. ; Lu, Wenchao

Author_Institution

State Key Lab. for Infrared Phys., Shanghai Inst. of Tech. Phys., Shanghai, China

fYear

2013

fDate

19-22 Aug. 2013

Firstpage

33

Lastpage

34

Abstract

An optical coupler composed of gold cylinder arrays overlaid with a gold film was proposed for quantum well infrared photo-detector. Finite difference time-domain method was used to numerically investigate the near-field enhancement. The result showed that for the x-polarized light normally incident from the backside, strong electric field component perpendicular to the quantum well can be generated, which can meet the requirement of the inter-subband transition and help improve the performance of QWIPs.

Keywords

finite difference time-domain analysis; gold; infrared detectors; metallic thin films; optical arrays; optical couplers; photodetectors; quantum well devices; QWIP; finite difference time-domain method; gold cylinder arrays; gold film; intersubband transition; metallic cylinder arrays; optical coupler; quantum well infrared photodetector; x-polarized light; Electric fields; Gold; Optical films; Optical polarization; Optical surface waves; Photodetectors; Plasmons;

fLanguage

English

Publisher

ieee

Conference_Titel

Numerical Simulation of Optoelectronic Devices (NUSOD), 2013 13th International Conference on

Conference_Location

Vancouver, BC

ISSN

2158-3234

Print_ISBN

978-1-4673-6309-9

Type

conf

DOI

10.1109/NUSOD.2013.6633110

Filename

6633110