Carbon nanotube as a Cherenkov-type light emitter and free electron laser
Journal Article
·
· Physical Review. B, Condensed Matter and Materials Physics
- Institute for Nuclear Problems, Belarus State University, Bobruiskaya 11, 220050 Minsk (Belarus)
A mechanism of stimulated emission of electromagnetic radiation by an electron beam in carbon nanotubes is theoretically considered. Three basic properties of carbon nanotubes: a strong slowing down of surface electromagnetic waves, ballisticity of the electron motion over typical nanotube length, and extremely high electron current density reachable in nanotubes, allow proposition of them as candidates for the development of nanoscale Cherenkov-type emitters, analogous to traveling-wave tube and free electron laser. Dispersion equations of the electron-beam instability and the threshold conditions of the stimulated emission have been derived and analyzed, demonstrating realizability of the nanotube-based nano-free electron lasers at realistic parameters of nanotubes and electronic beams.
- OSTI ID:
- 21192563
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Issue: 12 Vol. 79; ISSN 1098-0121
- Country of Publication:
- United States
- Language:
- English
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