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Applied Physics Letters / Volume 93 / Issue 5 / LASERS, OPTICS, AND OPTOELECTRONICS

Appl. Phys. Lett. 93, 051108 (2008); http://dx.doi.org/10.1063/1.2965612 (3 pages)

Amplification of transition-Cherenkov terahertz radiation of femtosecond filament in air

Yi Liu1, Aurélien Houard1, Bernard Prade1, André Mysyrowicz1, Abdourahmane Diaw2, and Vladimir T. Tikhonchuk2

1Laboratoire d’Optique Appliquée, ENSTA, Ecole Polytechnique, CNRS UMR 7639, Palaiseau 91761, France
2Centre Lasers Intenses et Applications, Université Bordeaux 1, CEA, CNRS UMR 5107, Talence 33405, France

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(Received 16 May 2008; accepted 10 July 2008; published online 5 August 2008)

The transition-Cherenkov terahertz radiation from a femtosecond laser filament in air is enhanced by three orders of magnitude in the presence of a longitudinal static electric field, while the radiation pattern and the polarization remain the same. An amplified longitudinal electron current inside the filament is responsible for this amplified terahertz emission.

© 2008 American Institute of Physics

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KEYWORDS and PACS

Keywords

Cherenkov radiation, optical pulse generation, plasma light propagation, plasma production by laser, submillimetre waves

PACS

  • 52.38.Hb

    Self-focussing, channeling, and filamentation in plasmas

  • 52.25.Os

    Emission, absorption, and scattering of electromagnetic radiation

  • 52.50.Jm

    Plasma production and heating by laser beams (laser-foil, laser-cluster, etc.)

  • 42.65.Re

    Ultrafast processes; optical pulse generation and pulse compression

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.2965612

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
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    A. Houard, Y. Liu, A. Mysyrowicz, and B. Leriche, Appl. Phys. Lett. 91, 241105 (2007)APPLAB000091000024241105000001.

    A. Houard, Y. Liu, B. Prade, V. T. Tikhonchuk, and A. Mysyrowicz, Phys. Rev. Lett. 100, 255006 (2008).

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