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Carbon nanotube as a Cherenkov-type light emitter and free electron laser
- Source :
- Physical Review B. 79
- Publication Year :
- 2009
- Publisher :
- American Physical Society (APS), 2009.
-
Abstract
- 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.
- Subjects :
- Physics
Nanotube
Carbon nanotube
Electron
Condensed Matter::Mesoscopic Systems and Quantum Hall Effect
Condensed Matter Physics
Laser
Molecular physics
Electromagnetic radiation
Electronic, Optical and Magnetic Materials
law.invention
Optical properties of carbon nanotubes
Condensed Matter::Materials Science
law
Stimulated emission
Atomic physics
Cherenkov radiation
Subjects
Details
- ISSN :
- 1550235X and 10980121
- Volume :
- 79
- Database :
- OpenAIRE
- Journal :
- Physical Review B
- Accession number :
- edsair.doi...........d4b044b748fad89efcabfd8389ab62b0