Spatio-spectral characteristics of THz radiation from two-color femtosecond filament

Vera A. Andreeva, Nikolay A. Panov, Mikhail N. Esaulkov, Olga G. Kosareva, Petr M. Solyankin, Daniil E. Shipilo, Alexander V. Borodin, Vladimir A. Makarov, Alexander P. Shkurinov

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Spatio-spectral distribution of THz radiation generated by two-color femtosecond laser breakdown in air is investigated theoretically. The theoretical model is based on the fast oscillating light field propagation and self-consistent free electron generation process. We find that the THz emission spectrum has both the low-frequency component related to the transient photocurrent with the maximum spectral intensity at ∼1 THz, and the high-frequency component at ∼10 THz related to the nonlinear response of bound electrons.

Original languageEnglish (US)
Title of host publicationMillimetre Wave and Terahertz Sensors and Technology VIII
EditorsNeil A. Salmon, Eddie L. Jacobs
PublisherSPIE
ISBN (Electronic)9781628418613
DOIs
StatePublished - 2015
EventMillimetre Wave and Terahertz Sensors and Technology VIII - Toulouse, France
Duration: Sep 22 2015 → …

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9651
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherMillimetre Wave and Terahertz Sensors and Technology VIII
Country/TerritoryFrance
CityToulouse
Period9/22/15 → …

Bibliographical note

Funding Information:
We thank RFBR (15-02-99630, 14-02-31379), the Council of RF President for Support of Young Sci- entists (MK-4895.2014.2), RF President Grant for Leading Scientific Schools (NSh-3796.2014.2), Dynasty Foundation.

Keywords

  • Four-wave mixing
  • THz radiation
  • filamentation

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