Plasma mechanisms of pulsed terahertz radiation generation

  • R. A. Akhmedzhanov
  • I. E. Ilyakov
  • V. A. Mironov
  • E. V. Suvorov
  • D. A. Fadeev
  • B. V. Shishkin
Article

DOI: 10.1007/s11141-009-9155-6

Cite this article as:
Akhmedzhanov, R.A., Ilyakov, I.E., Mironov, V.A. et al. Radiophys Quantum El (2009) 52: 482. doi:10.1007/s11141-009-9155-6

We present the results on generating terahertz radiation in the plasma of an optical discharge arising in the atmosphere during the focusing of femtosecond laser radiation. Different generation schemes related to focusing of the optical radiation by spherical and axicon lenses, with a constant electric field imposed on the laser spark region, as well as with the use of bichromatic laser radiation, are studied. Directivity patterns and polarization distributions of the terahertz radiation are analyzed in detail for different generation techniques. Comparison with the experimental results obtained by other research groups is given. Possible nonlinear mechanisms of the terahertz radiation generation are discussed.

Copyright information

© Springer Science+Business Media, Inc. 2009

Authors and Affiliations

  • R. A. Akhmedzhanov
    • 1
  • I. E. Ilyakov
    • 1
  • V. A. Mironov
    • 1
  • E. V. Suvorov
    • 1
  • D. A. Fadeev
    • 1
  • B. V. Shishkin
    • 1
  1. 1.Institute of Applied Physics of the Russian Academy of SciencesNizhny NovgorodRussia