Ultrafast dynamics of intersubband excitations in a quasi-two-dimensional hole gas

Robert A. Kaindl, Matthias Wurm, Klaus Reimann, Michael Woerner, Thomas Elsaesser, Christian Miesner, Karl Brunner, Gerhard Abstreiter

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

Femtosecond study of the hole relaxation after resonant intersubband excitation in a quasi-two-dimensional semiconductor was carried out. Midinfrared pump-probe studies on p-types Si0.5Ge0.5/Si multiple quantum wells revealed an intersubband relaxation time of 250 fs from the second heavy-hole back to the first heavy-hole subband.

Original languageEnglish (US)
Pages (from-to)1122-1125
Number of pages4
JournalPhysical Review Letters
Volume86
Issue number6
DOIs
StatePublished - Feb 5 2001
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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