title: Characterization of the third-harmonic radiation generated by intense laser self-formed filaments propagating in air.
abstract: We perform laboratory experiments to study ultraviolet radiation generated by intense self-formed laser filaments produced by propagating high-power femtosecond laser pulses in air. The laser used in the experiment is a 0.5 TW Ti:sapphire system with the center wavelength at 800 nm. The observed ultraviolet emission occurs in the form of the third harmonic and frequency-upshifted radiation from the fundamental. We present direct characterization of the generated harmonic and frequency-upshifted radiation, including transverse imaging and spatially resolved spectral measurements.
authors: Plasma Physics Division, Naval Research Laboratory, Washington, DC 20375, USA. ilya.alexeev@gmail.com
authors: I
authors: I
authors: Alexeev
authors: A C
authors: AC
authors: Ting
authors: D F
authors: DF
authors: Gordon
authors: E
authors: E
authors: Briscoe
authors: B
authors: B
authors: Hafizi
authors: P
authors: P
authors: Sprangle