Abstract

We investigate the potential of four-wave mixing in dielectric hollow waveguides for vacuum ultraviolet pulse generation with unprecedented short durations. Taking into account higher-order transverse modes and plasma effects we predict the generation of a 2.5fs pulse at 160nm using an intense 10fs, 800nm pulse and its weaker third harmonic at 267nm, both coupled to the fundamental transverse mode. Excitation of higher transverse modes allows an increase of the signal energy (up to by a factor of 20), but with a pulse duration of 13fs (compressible to 7.7fs).

© 2008 Optical Society of America

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