Femtosecond nonlinear spectroscopy of semiconductor quantum dots: effect of two-electron-hole-pair interaction

Author

Hunsche, S. ; Klimov, V. ; Kurz, H.

Author_Institution

Inst. fur Halbleitertechnik II, Tech. Hochschule Aachen, Germany

fYear

1994

fDate

25-29 Jul 1994

Firstpage

160

Lastpage

162

Abstract

The authors report on measurements of the femtosecond dynamics of differential transmission spectra (DTS) of CdSe semiconductor nanocrystals excited well above the energy of the lowest optical transition. The effect of the two-pair interaction manifests itself at the initial stage of carrier relaxation, before the lowest electron and hole levels become occupied, as a red-shift of the lowest resonance in the nonlinear absorption spectra

Keywords

III-V semiconductors; cadmium compounds; high-speed optical techniques; nanostructured materials; nonlinear optics; red shift; semiconductor quantum dots; visible spectra; visible spectroscopy; CdSe; carrier relaxation; differential transmission spectra; electron levels; femtosecond dynamics; femtosecond nonlinear spectroscopy; hole levels; nonlinear absorption spectra; optical transition; red-shift; semiconductor quantum dots; two-electron-hole-pair interaction; two-pair interaction; Absorption; Charge carrier processes; Electron optics; Energy measurement; Nanocrystals; Nonlinear optics; Quantum dots; Resonance; Spectroscopy; Ultrafast optics;

fLanguage

English

Publisher

ieee

Conference_Titel

Nonlinear Optics: Materials, Fundamentals, and Applications, 1994. NLO '94 IEEE

Conference_Location

Waikoloa, HI

Print_ISBN

0-7803-1473-5

Type

conf

DOI

10.1109/NLO.1994.470848

Filename

470848