Free space radiation of coherent, coupled plasmon–phonon modes from InAs

The coupled plasmon–phonon system in bulk InAs is studied by ultrafast THz spectroscopy. Both upper- and lower-hybrid modes associated with coherent LO phonon and bulk plasma oscillations are identified in the radiated signals. The contribution of coherent phonons strongly depends on their spectral...

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Bibliographic Details
Published in:Physica. B, Condensed matter Condensed matter, 2002-03, Vol.314 (1), p.158-161
Main Authors: Hasselbeck, M.P., Stalnaker, D., Schlie, L.A., Stintz, A., Rotter, T.J.
Format: Article
Language:English
Subjects:
Coherent phonons
Coherent plasmons
Collective excitations (including excitons, polarons, plasmons and other charge-density excitations)
Collective excitations (including plasmons and other charge-density excitations)
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Electron states
Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures
Exact sciences and technology
InAs
Metal-insulator transitions and other electronic transitions
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Physics
Surface and interface electron states
THz
Time-resolved optical spectroscopies and other ultrafast optical measurements in condensed matter
Ultrafast
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Summary:The coupled plasmon–phonon system in bulk InAs is studied by ultrafast THz spectroscopy. Both upper- and lower-hybrid modes associated with coherent LO phonon and bulk plasma oscillations are identified in the radiated signals. The contribution of coherent phonons strongly depends on their spectral proximity to the plasmons.
ISSN:0921-4526
1873-2135
DOI:10.1016/S0921-4526(01)01346-1