Biexciton and triexciton states in quantum dots in the weak confinement regime

Michio Ikezawa, Yasuaki Masumoto, Toshihide Takagahara, Selvakumar V. Nair

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

Biexciton and triexciton states in CuCl quantum dots were studied by means of time-resolved size-selective pump-and-probe technique. A clear induced absorption band is observed on the high-energy side of the excitation photon energy. The new induced absorption is assigned to the transition from the exciton ground state to one of the weakly correlated exciton pair states which were theoretically predicted to exist and to play an important role in nonlinear optical processes. Its pump energy dependence and temporal evolution strongly support this assignment. Under high-density or two-color excitation condition, a triexciton state in quantum dots is observed for the first time.

Original languageEnglish
Pages (from-to)3522-3525
Number of pages4
JournalPhysical Review Letters
Volume79
Issue number18
Publication statusPublished - 1997 Nov 3
Externally publishedYes

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quantum dots
excitons
pumps
excitation
energy
absorption spectra
color
ground state
probes
photons

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Biexciton and triexciton states in quantum dots in the weak confinement regime. / Ikezawa, Michio; Masumoto, Yasuaki; Takagahara, Toshihide; Nair, Selvakumar V.

In: Physical Review Letters, Vol. 79, No. 18, 03.11.1997, p. 3522-3525.

Research output: Contribution to journalArticle

Ikezawa, M, Masumoto, Y, Takagahara, T & Nair, SV 1997, 'Biexciton and triexciton states in quantum dots in the weak confinement regime', Physical Review Letters, vol. 79, no. 18, pp. 3522-3525.
Ikezawa, Michio ; Masumoto, Yasuaki ; Takagahara, Toshihide ; Nair, Selvakumar V. / Biexciton and triexciton states in quantum dots in the weak confinement regime. In: Physical Review Letters. 1997 ; Vol. 79, No. 18. pp. 3522-3525.
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