Sub-15fs ultraviolet pulses generated by achromatic phase-matching sum-frequency mixing

Abstract

A broadband ultraviolet pulse with a spectral width of 44 nm was generated by achromatic sum-frequency mixing of an 805-nm pulse and ultrabroadband visible pulse. Angular dispersion was introduced to achieve broadband phase matching by a prism pair. The UV pulse was compressed to 13.2 fs with another prism pair, with energy of 600 nJ. (C) 2009 Optical Society of America