Conservation of intraband coherence upon carrier relaxation by LO-phonon emission

F. Wolter, H. G. Roskos, K. C. Je, Jorg Hader, T. Meier, F. Rossi, K. Koehler, Stephan W Koch, H. Kurz

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

A combined investigation of the coherent and incoherent dynamics of optically excited charge carriers in a superlattice structure is presented. The coherent dynamics was probed by THz-emission spectroscopy while the population dynamics of the electrons were measured at comparable densities with a two-color pump/probe transmission setup. For electrons in the e1 miniband, the phonon-emission time is determined by measurement of differential-transmission-change spectra (DTS) transients at different excitation photon energies below and above the energy threshold for LO-phonon emission. A comparison of the characteristic time constants provide evidence for the conservation of the phase of the intraband coherence on LO-phonon relaxation.

Original languageEnglish (US)
Title of host publicationConference on Quantum Electronics and Laser Science (QELS) - Technical Digest Series
Editors Anon
PublisherIEEE
Pages35-36
Number of pages2
Volume12
StatePublished - 1997
Externally publishedYes
EventProceedings of the 1997 Conference on Quantum Electronics and Laser Science, QELS - Baltimore, MD, USA
Duration: May 18 1997May 23 1997

Other

OtherProceedings of the 1997 Conference on Quantum Electronics and Laser Science, QELS
CityBaltimore, MD, USA
Period5/18/975/23/97

Fingerprint

conservation
time constant
charge carriers
electrons
pumps
color
thresholds
energy
probes
photons
spectroscopy
excitation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Wolter, F., Roskos, H. G., Je, K. C., Hader, J., Meier, T., Rossi, F., ... Kurz, H. (1997). Conservation of intraband coherence upon carrier relaxation by LO-phonon emission. In Anon (Ed.), Conference on Quantum Electronics and Laser Science (QELS) - Technical Digest Series (Vol. 12, pp. 35-36). IEEE.

Conservation of intraband coherence upon carrier relaxation by LO-phonon emission. / Wolter, F.; Roskos, H. G.; Je, K. C.; Hader, Jorg; Meier, T.; Rossi, F.; Koehler, K.; Koch, Stephan W; Kurz, H.

Conference on Quantum Electronics and Laser Science (QELS) - Technical Digest Series. ed. / Anon. Vol. 12 IEEE, 1997. p. 35-36.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Wolter, F, Roskos, HG, Je, KC, Hader, J, Meier, T, Rossi, F, Koehler, K, Koch, SW & Kurz, H 1997, Conservation of intraband coherence upon carrier relaxation by LO-phonon emission. in Anon (ed.), Conference on Quantum Electronics and Laser Science (QELS) - Technical Digest Series. vol. 12, IEEE, pp. 35-36, Proceedings of the 1997 Conference on Quantum Electronics and Laser Science, QELS, Baltimore, MD, USA, 5/18/97.
Wolter F, Roskos HG, Je KC, Hader J, Meier T, Rossi F et al. Conservation of intraband coherence upon carrier relaxation by LO-phonon emission. In Anon, editor, Conference on Quantum Electronics and Laser Science (QELS) - Technical Digest Series. Vol. 12. IEEE. 1997. p. 35-36
Wolter, F. ; Roskos, H. G. ; Je, K. C. ; Hader, Jorg ; Meier, T. ; Rossi, F. ; Koehler, K. ; Koch, Stephan W ; Kurz, H. / Conservation of intraband coherence upon carrier relaxation by LO-phonon emission. Conference on Quantum Electronics and Laser Science (QELS) - Technical Digest Series. editor / Anon. Vol. 12 IEEE, 1997. pp. 35-36
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abstract = "A combined investigation of the coherent and incoherent dynamics of optically excited charge carriers in a superlattice structure is presented. The coherent dynamics was probed by THz-emission spectroscopy while the population dynamics of the electrons were measured at comparable densities with a two-color pump/probe transmission setup. For electrons in the e1 miniband, the phonon-emission time is determined by measurement of differential-transmission-change spectra (DTS) transients at different excitation photon energies below and above the energy threshold for LO-phonon emission. A comparison of the characteristic time constants provide evidence for the conservation of the phase of the intraband coherence on LO-phonon relaxation.",
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AU - Wolter, F.

AU - Roskos, H. G.

AU - Je, K. C.

AU - Hader, Jorg

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AU - Rossi, F.

AU - Koehler, K.

AU - Koch, Stephan W

AU - Kurz, H.

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AB - A combined investigation of the coherent and incoherent dynamics of optically excited charge carriers in a superlattice structure is presented. The coherent dynamics was probed by THz-emission spectroscopy while the population dynamics of the electrons were measured at comparable densities with a two-color pump/probe transmission setup. For electrons in the e1 miniband, the phonon-emission time is determined by measurement of differential-transmission-change spectra (DTS) transients at different excitation photon energies below and above the energy threshold for LO-phonon emission. A comparison of the characteristic time constants provide evidence for the conservation of the phase of the intraband coherence on LO-phonon relaxation.

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