Heterodyning and nonlinear QWIPs

Author

Liu, H.C.

Author_Institution

Inst. for Microstructural Sci., Nat. Res. Council of Canada, Ottawa, Ont., Canada

Volume

1

fYear

2001

fDate

2001

Abstract

Summary form only given. We have carried out several experiments on device optimization for high absorption, on heterodyne detection up to 82 GHz, and on various nonlinear effects using GaAs/AlGaAs QWIPs. Near-ideal (~100%) absorption quantum efficiency and room-temperature operation have been achieved, with specially designed devices having a large number of quantum wells and high well doping densities. Record-high frequencies up to 82GHz have been reached in heterodyne detection. Nonlinear effects caused by nonuniformity in potential distribution and laser intensity variation have been studied. Auto-correlation using a two-photon process has been demonstrated

Keywords

III-V semiconductors; aluminium compounds; gallium arsenide; heterodyne detection; infrared detectors; quantum well devices; semiconductor quantum wells; two-photon processes; 82 GHz; GaAs-AlGaAs; GaAs/AlGaAs QWIPs; auto-correlation; device optimization; heterodyne detection; high well doping densities; laser intensity variation; near-ideal absorption quantum efficiency; nonlinear effects; potential distribution nonuniformity; quantum well infrared photodetectors; quantum wells; room-temperature operation; two-photon process; Absorption; Councils; Frequency; Gallium arsenide; Gas detectors; Optical imaging; Photodetectors; Physics; Quantum cascade lasers; Temperature sensors;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics Society, 2001. LEOS 2001. The 14th Annual Meeting of the IEEE

Conference_Location

San Diego, CA

ISSN

1092-8081

Print_ISBN

0-7803-7105-4

Type

conf

DOI

10.1109/LEOS.2001.969263

Filename

969263