title: High-power fifth-harmonic generation of femtosecond pulses in the vacuum ultraviolet using a Ti:sapphire laser.
abstract: We demonstrate the generation of fifth-harmonic pulses at 161 nm, with an energy of up to 600 nJ and 160 fs pulse duration from a Ti:sapphire laser at 1 kHz repetition rate by four-wave difference-frequency mixing in argon-filled waveguides. The efficiency is greatly improved by coupling to higher-order transverse modes, as well as by coating the inner surface of the waveguide. A numerical model of the process yields an understanding of the main effects influencing the harmonic generation.
authors: Max-Born-Institute for Nonlinear Optics and Short Pulse Spectroscopy, Max-Born-Str. 2A, D-12489 Berlin, Germany. tzankov@mbi-berlin.de
authors: Pancho
authors: P
authors: Tzankov
authors: Oliver
authors: O
authors: Steinkellner
authors: Jiaan
authors: J
authors: Zheng
authors: Mark
authors: M
authors: Mero
authors: Wolfgang
authors: W
authors: Freyer
authors: Anton
authors: A
authors: Husakou
authors: Ihar
authors: I
authors: Babushkin
authors: Joachim
authors: J
authors: Herrmann
authors: Frank
authors: F
authors: Noack