Theory of laser cooling of semiconductor quantum wells

G. Rupper, Nai-Hang Kwong, B. Gu, Rudolf Binder

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We present a microscopic many-body theory of laser cooling of semiconductor quantum wells. The cooling mechanism is the upconversion of pump photons through absorption and subsequent luminescence by an electron-hole-exciton mixture maintained at steady state in the quantum well. Assuming this Coulomb plasma to be in quasi-thermal equilibrium, our theory calculates its absorption/luminescence spectra within a diagrammatic (real-time) Green's function approach at the self-consistent T-matrix level. These spectra are used in a cooling threshold analysis for GaAs quantum wells that also takes into account other losses into heat. We compare the present results with previous ones obtained for bulk GaAs.

Original languageEnglish (US)
Pages (from-to)1049-1054
Number of pages6
JournalPhysica Status Solidi (B) Basic Research
Volume245
Issue number6
DOIs
StatePublished - Jun 2008

Fingerprint

Laser cooling
laser cooling
Semiconductor quantum wells
quantum wells
Luminescence
luminescence
Cooling
cooling
time functions
Heat losses
Green's function
Excitons
Green's functions
Photons
excitons
Pumps
pumps
Plasmas
heat
thresholds

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Theory of laser cooling of semiconductor quantum wells. / Rupper, G.; Kwong, Nai-Hang; Gu, B.; Binder, Rudolf.

In: Physica Status Solidi (B) Basic Research, Vol. 245, No. 6, 06.2008, p. 1049-1054.

Research output: Contribution to journalArticle

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