Microscopic theory of optical gain in small semiconductor quantum dots

Y. Z. Hu, H. Gießen, Nasser N Peyghambarian, Stephan W Koch

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

A microscopic theory is used to analyze optical gain in small semiconductor quantum dots. Based on a numerical matrix diagonalization method and subsequent solution of the optical Bloch equations, it is found that the quantum-dot gain is dominated by the stimulated transitions between biexciton and exciton states. The calculation shows that Coulomb interaction and valence-band mixing effects significantly influence the spectral and dynamic gain properties in strongly confined quantum dots.

Original languageEnglish (US)
Pages (from-to)4814-4822
Number of pages9
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume53
Issue number8
StatePublished - 1996

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Optical gain
Semiconductor quantum dots
quantum dots
Electron transitions
Valence bands
Coulomb interactions
Excitons
matrix methods
excitons
valence
interactions

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Microscopic theory of optical gain in small semiconductor quantum dots. / Hu, Y. Z.; Gießen, H.; Peyghambarian, Nasser N; Koch, Stephan W.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 53, No. 8, 1996, p. 4814-4822.

Research output: Contribution to journalArticle

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