Nonequilibrium many-body theory of intersubband lasers

Author

Waldmueller, Inés ; Chow, Weng W. ; Young, Erik W. ; Wanke, Michael C.

Author_Institution

Sandia Nat. Labs., Albuquerque, NM, USA

Volume

42

Issue

3

fYear

2006

fDate

3/1/2006 12:00:00 AM

Firstpage

292

Lastpage

301

Abstract

We present a theory for intersubband lasers, based on the solution of the Maxwell-semiconductor Bloch equations for the laser field and active medium. The collision contributions are treated within the relaxation rate approximation, where the relaxation rates are determined by microscopic scattering calculations. The theory is suitable for investigating steady-state as well as dynamical laser characteristics. As examples of applications of the theory, we examine the thermal dependence of the laser output versus current density curve and the response to modulation of the injection current, for a three-subband laser. The influence of the nonparabolicity of the conduction band and Hartree-Fock many-body effects are investigated.

Keywords

HF calculations; Maxwell equations; current density; laser theory; semiconductor lasers; Hartree-Fock many-body effects; Maxwell-semiconductor Bloch equations; conduction band; current density; injection current; intersubband lasers; many-body theory; microscopic scattering; relaxation rate approximation; Laser modes; Laser theory; Laser transitions; Maxwell equations; Microscopy; Particle scattering; Quantum cascade lasers; Quantum well lasers; Semiconductor lasers; Steady-state; Intersubband semiconductor laser; microscopic scattering; nonequilibrium laser dynamics; relaxation rate approximation;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/JQE.2006.869813

Filename

1597416