n218317SE Academic Article uri icon

abstract

  • The process of third-harmonic generation during the filamentation of intense IR femtosecond laser pulses in air is investigated experimentally. It is shown that the introduction of a thin plasma string created by another femtosecond pulse, perpendicularly to the filament's path, dramatically reshapes the third-harmonic beam into a Bessel-like farfield distribution, while at the same time significantly enhances, up to 250 times, its conversion efficiency. 2009 Optical Society of America.

published proceedings

  • Optics Express

author list (cited authors)

  • Suntsov, S., Abdollahpour, D., Papazoglou, D. G., & Tzortzakis, S.

publication date

  • January 1, 2009 11:11 AM