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

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

Research output: Contribution to conferencePaper

1 Scopus citations

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)
Pages35-36
Number of pages2
StatePublished - Jan 1 1997
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

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Wolter, F., Roskos, H. G., Je, K. C., Hader, J., Meier, T., Rossi, F., Koehler, K., Koch, S. W., & Kurz, H. (1997). Conservation of intraband coherence upon carrier relaxation by LO-phonon emission. 35-36. Paper presented at Proceedings of the 1997 Conference on Quantum Electronics and Laser Science, QELS, Baltimore, MD, USA, .