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Proceedings Paper

Direct observation of Landau damping with coherent plasmons in InSb
Author(s): D. Seletskiy; M. P. Hasselbeck; M. Sheik-Bahae; L. R. Dawson
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Paper Abstract

We study Landau damping of a coherent, solid-state plasma by means of ultrafast THz spectroscopy. The onset of this phenomenon occurs when momentum and energy conservation are satisfied for single-particle excitations; this diminishes collective mode behavior. A series of InSb-based bulk heterostructures have varying amounts of spatial confinement, allowing direct access to a different range of wave vectors in the electron-electron interaction. Sufficient confinement leads to disappearance of the plasmon quasi-particle via Landau (collisionless) damping. The experimental results are quantitatively reproduced by model calculations.

Paper Details

Date Published: 14 February 2008
PDF: 7 pages
Proc. SPIE 6892, Ultrafast Phenomena in Semiconductors and Nanostructure Materials XII, 68921S (14 February 2008); doi: 10.1117/12.759159
Show Author Affiliations
D. Seletskiy, Univ. of New Mexico (United States)
M. P. Hasselbeck, Univ. of New Mexico (United States)
M. Sheik-Bahae, Univ. of New Mexico (United States)
L. R. Dawson, Univ. of New Mexico (United States)


Published in SPIE Proceedings Vol. 6892:
Ultrafast Phenomena in Semiconductors and Nanostructure Materials XII
Jin-Joo Song; Kong-Thon Tsen; Markus Betz; Abdulhakem Y. Elezzabi, Editor(s)

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