Differential measurements of interband and intersubband coherence and exciton-exciton correlations in quantum wells

Author

Hawkins, S.A. ; Stevens, M.J. ; Gansen, E.J. ; Jarasiunas, K. ; Smirl, A.L. ; Steel, D.G.

Author_Institution

Lab. for Photonics & Quantum Electron., Iowa Univ., Iowa City, IA, USA

fYear

2000

fDate

6-10 Aug. 2000

Firstpage

45

Lastpage

47

Abstract

A novel temporally-gated technique and standard differential detection techniques are used to study quantum beats involving the light and heavy hole excitons in GaAs quantum wells. The contributions of intravalence band coherence are separated from those of conduction-to-valence band coherence and the contributions of dynamic exciton-exciton correlations are identified by taking advantage of the polarization selection rules for the excitonic transitions.

Keywords

III-V semiconductors; conduction bands; differential detection; excitons; gallium arsenide; semiconductor quantum wells; time resolved spectra; valence bands; GaAs; GaAs quantum wells; conduction-to-valence band coherence; differential measurements; dynamic exciton-exciton correlations; exciton-exciton correlations; excitonic transitions; heavy hole excitons; interband coherence; intersubband coherence; intravalence band coherence; light hole excitons; polarization selection rules; quantum beats; quantum wells; standard differential detection techniques; temporally-gated technique; Excitons; Frequency; Gallium arsenide; Nonlinear optics; Optical polarization; Optical pulses; Probes; Pulse amplifiers; Pulse measurements; Time measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Nonlinear Optics: Materials, Fundamentals, and Applications, 2000. Technical Digest

Conference_Location

Kaua´i-Lihue, HI, USA

Print_ISBN

1-55752-646-X

Type

conf

DOI

10.1109/NLO.2000.883569

Filename

883569