Terawatt femtosecond Ti : sapphire laser system

A terawatt femtosecond laser system based on a most promising at present br oadband laser medium, Ti-doped sapphire, is created. The system produces 80 -fs pulses with energy of 80 mJ and a repetition rate of 10 Hz. The first a pplications of the laser system demonstrated in the paper are the formation of extended channels with the aspect ratio similar to 10(4) upon axicon fo cusing of laser radiation in transparent dielectrics and transformation of the pulse spectrum during propagation of the pulse in gas-filled low-pressu re capillaries.