Origin of emission energy blue shift in a 1.3 /spl mu/m GaAsSb type-II quantum well

Author

Blum, Oliver ; Chow, W.W. ; Klem, John F. ; Schneider, H.C.

Author_Institution

Albuquerque, Sandia Nat. Labs., Albuquerque, NM, USA

fYear

2001

fDate

11-11 May 2001

Firstpage

209

Lastpage

210

Abstract

Summary form only given. Vertical-cavity surface-emitting laser (VCSEL) gain structures that can be epitaxially grown on GaAs substrates are of particular interest. One such system is the type-II GaAsSb/GaInAs/GaAs quantum well structure. For this gain structure, experiments found significant increase in the optical emission peak energy with increasing excitation. This blue shift is a serious concern because it is detrimental to long wavelength operation.This paper describes experimental and theoretical investigations of the significant blue shift of the emission peak with increasing injection current in a type-II quantum well. We find the blue shift to depend on the interplay of the competing effects of type-II quantum confinement, and the resulting Coulomb attraction and band distortion.

Keywords

III-V semiconductors; gallium arsenide; gallium compounds; laser transitions; photoluminescence; quantum well lasers; semiconductor quantum wells; spectral line shift; 1.3 /spl mu/m GaAsSb type-II quantum well; 1.3 micron; Coulomb attraction; GaAsSb; VCSELs; band distortion; blue shift; emission energy blue shift; gain structures; long wavelength operation; optical emission peak energy; semiconductor gain media; type-II quantum well; vertical-cavity surface-emitting lasers; Gallium arsenide; Laser excitation; Optical distortion; Optical surface waves; Quantum mechanics; Quantum well lasers; Stimulated emission; Substrates; Surface emitting lasers; Vertical cavity surface emitting lasers;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics, 2001. CLEO '01. Technical Digest. Summaries of papers presented at the Conference on

Conference_Location

Baltimore, MD, USA

Print_ISBN

1-55752-662-1

Type

conf

DOI

10.1109/CLEO.2001.947714

Filename

947714