State filling, coulomb, and trapping effects in the optical nonlinearity of CdTe quantum dots in glass

V. Esch, B. Fluegel, Galina Khitrova, H. M. Gibbs, Jiajin Xu Jiajin, K. Kang, Stephan W Koch, L. C. Liu, S. H. Risbud, Nasser N Peyghambarian

Research output: Contribution to journalArticle

99 Citations (Scopus)

Abstract

Microcrystallites of CdTe were grown in a special-formula glass, yielding CdTe dots; the linear-absorption spectrum exhibits as many as six quantum-confinement peaks. Excitation of the sample with pulses ranging from femtoseconds to microseconds has allowed us to distinguish between various mechanisms for optical nonlinearity. At very early times, phase-space filling and Coulomb interaction between the excited charged carriers is responsible for the absorption changes, ±. At later times, Coulomb effects due to trapped carriers remain and last for nanoseconds or microseconds.

Original languageEnglish (US)
Pages (from-to)7450-7453
Number of pages4
JournalPhysical Review B
Volume42
Issue number12
DOIs
StatePublished - 1990

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Quantum confinement
Coulomb interactions
Semiconductor quantum dots
Absorption spectra
trapping
nonlinearity
quantum dots
Glass
glass
absorption spectra
pulses
excitation
interactions

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

State filling, coulomb, and trapping effects in the optical nonlinearity of CdTe quantum dots in glass. / Esch, V.; Fluegel, B.; Khitrova, Galina; Gibbs, H. M.; Xu Jiajin, Jiajin; Kang, K.; Koch, Stephan W; Liu, L. C.; Risbud, S. H.; Peyghambarian, Nasser N.

In: Physical Review B, Vol. 42, No. 12, 1990, p. 7450-7453.

Research output: Contribution to journalArticle

Esch, V. ; Fluegel, B. ; Khitrova, Galina ; Gibbs, H. M. ; Xu Jiajin, Jiajin ; Kang, K. ; Koch, Stephan W ; Liu, L. C. ; Risbud, S. H. ; Peyghambarian, Nasser N. / State filling, coulomb, and trapping effects in the optical nonlinearity of CdTe quantum dots in glass. In: Physical Review B. 1990 ; Vol. 42, No. 12. pp. 7450-7453.
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AU - Khitrova, Galina

AU - Gibbs, H. M.

AU - Xu Jiajin, Jiajin

AU - Kang, K.

AU - Koch, Stephan W

AU - Liu, L. C.

AU - Risbud, S. H.

AU - Peyghambarian, Nasser N

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