Instantaneous Rayleigh-scattering from excitons localized in monolayer islands

Author

Langbein, W. ; Leosson, K. ; Jensen, J.R. ; Hvam, J.M. ; Zimmermann, R.

Author_Institution

Lehrstuhl fur Experimentelle Phys. EIIb, Dortmund Univ., Germany

fYear

2000

fDate

10-15 Sept. 2000

Abstract

Summary form only given. The emission dynamics of excitons in semiconductor quantum wells (QW) after a short-pulse excitation receives continued interest. A delayed secondary emission (SE) was noticed early on, unlike of what is observed in atomic vapors. We show that this difference is due to a uniform distribution of the excitonic oscillator strength in the QW plane. When exciting only a part of the resonance, the in-plane uniformity of the initially excited polarization is broken, and an instantaneous rise of the SE is observed.

Keywords

Rayleigh scattering; excitons; island structure; monolayers; optical films; secondary emission; semiconductor quantum wells; atomic vapors; delayed secondary emission; emission dynamics; excitonic oscillator strength; excitons; in-plane uniformity; initially excited polarization; instantaneous Rayleigh-scattering; monolayer islands; semiconductor quantum wells; short-pulse excitation; uniform distribution; Atom optics; Cameras; Delay; Excitons; Marketing and sales; Oscillators; Polarization; Probability; Resonance; Solid modeling;

fLanguage

English

Publisher

ieee

Conference_Titel

Quantum Electronics Conference, 2000. Conference Digest. 2000 International

Conference_Location

Nice, France

Print_ISBN

0-7803-6318-3

Type

conf

DOI

10.1109/IQEC.2000.907869

Filename

907869