Journal of Infrared, Millimeter, and Terahertz Waves

, 32:1157

Analysis of Dual Frequency Interaction in the Filament with the Purpose of Efficiency Control of THz Pulse Generation

Authors

    • International Laser Center & Faculty of PhysicsM.V. Lomonosov Moscow State University
  • Nikolay A. Panov
    • International Laser Center & Faculty of PhysicsM.V. Lomonosov Moscow State University
  • Roman V. Volkov
    • International Laser Center & Faculty of PhysicsM.V. Lomonosov Moscow State University
  • Vera A. Andreeva
    • International Laser Center & Faculty of PhysicsM.V. Lomonosov Moscow State University
  • Aleksey V. Borodin
    • International Laser Center & Faculty of PhysicsM.V. Lomonosov Moscow State University
  • Mikhail N. Esaulkov
    • International Laser Center & Faculty of PhysicsM.V. Lomonosov Moscow State University
  • Yanping Chen
    • Centre d’Optique, Photonique et Laser (COPL) and Département de physique, de génie physique et d’optique, Université Laval
  • Claude Marceau
    • Centre d’Optique, Photonique et Laser (COPL) and Département de physique, de génie physique et d’optique, Université Laval
  • Vladimir A. Makarov
    • International Laser Center & Faculty of PhysicsM.V. Lomonosov Moscow State University
  • Alexander P. Shkurinov
    • International Laser Center & Faculty of PhysicsM.V. Lomonosov Moscow State University
  • Andrey B. Savel’ev
    • International Laser Center & Faculty of PhysicsM.V. Lomonosov Moscow State University
  • See Leang Chin
    • Centre d’Optique, Photonique et Laser (COPL) and Département de physique, de génie physique et d’optique, Université Laval
Article

DOI: 10.1007/s10762-011-9820-7

Cite this article as:
Kosareva, O.G., Panov, N.A., Volkov, R.V. et al. J Infrared Milli Terahz Waves (2011) 32: 1157. doi:10.1007/s10762-011-9820-7

Abstract

Cross-guiding of the 400 nm second harmonic of the Ti:Sapphire laser in the femtosecond filament produced by an 800 nm pump in argon leads to the efficient terahertz generation along the longitudinally extended high intensity region. Based on the vectorial model of the dual pulse co-propagation we found that terahertz yield due to four-wave mixing in the filament maximizes for the same temporal delay between 400 nm and 800 nm pulses as the 400 nm signal after the analyzer crossed to its initially linear polarization direction. This optimum delay goes up with increasing geometrical focusing distance and leads to the maximum terahertz yield if the initial 800 nm pump and the second harmonic polarization directions are parallel to each other.

Keywords

Terahertz (THz) generation Femtosecond filament Four-wave mixing (FWM)

Copyright information

© Springer Science+Business Media, LLC 2011