Enhanced signal-to-noise in photodetectors due to interface phonon-assisted transitions

Author

Yi Lan ; Nanzhu Zhang ; Shi, Junxia Lucy ; Dutta, Maitreyee ; Stroscio, Michael A.

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Illinois at Chicago, Chicago, IL, USA

fYear

2014

fDate

3-6 June 2014

Firstpage

1

Lastpage

4

Abstract

Herein, we consider examine the possibility of photodetectors with reduced signal-to-noise based on a three quantum well structure with one single well and one double well. This structure facilitates photon detection through the following sequence of events: photon absorption, phonon emission, and then photon absorb of a photon having the same wavelength as the first one. Even though this design two photons a phonon-assisted transition, it is demonstrated that greatly enhance signal-to-noise is obtained.

Keywords

interface phonons; light absorption; photodetectors; quantum well devices; double well structure; interface phonon-assisted transition; phonon emission; photodetector; photon absorption; photon detection; quantum well structure; signal-to-noise enhancement; single well structure; Energy states; Indium gallium arsenide; Mathematical model; Phonons; Photodetectors; Photonics; phonon; photodetector); photon; single-double quantum wells;

fLanguage

English

Publisher

ieee

Conference_Titel

Computational Electronics (IWCE), 2014 International Workshop on

Conference_Location

Paris

Type

conf

DOI

10.1109/IWCE.2014.6865857

Filename

6865857