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Proceedings Paper

Radiative instability of electron beams in carbon nanotubes
Author(s): Konstantin G. Batrakov; Polina P. Kuzhir; Sergey A. Maksimenko
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Paper Abstract

Basic mechanisms of the interaction of electron beam tavelling through a carbon nanotube with electromagnetic wave, resulting in the radiative instability and generation of stimulated radiation, are considered. The effect of the surface electromagnetic wave slow-down in CNT (c/v > 100) [Slepyan et al., Phys. Rev. B 60, 17136, 1999] is exploited to synchronize the wave and the beam and thus to realize the Cherenkov radiation mechanism. Alternative mechanism of the electron beam instability is proposed based on the undulator emission arising due to the interband transitions of electrons moving in nanotube. The dispersion equations of the electron beam instability and threshold conditions for the stimulated radiation are derived and studied. The analysis of the threshold conditions estimates the possibility of the stimulated emission by electron beam as realistic and attainable at present-day experimental technique.

Paper Details

Date Published: 8 September 2006
PDF: 8 pages
Proc. SPIE 6328, Nanomodeling II, 63280Z (8 September 2006); doi: 10.1117/12.678029
Show Author Affiliations
Konstantin G. Batrakov, Belarus State Univ. (Belarus)
Polina P. Kuzhir, Belarus State Univ. (Belarus)
Sergey A. Maksimenko, Belarus State Univ. (Belarus)

Published in SPIE Proceedings Vol. 6328:
Nanomodeling II
Akhlesh Lakhtakia; Sergey A. Maksimenko, Editor(s)

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