Generation of 220 fs, 352 nm pulse by high yield efficient frequency tripling of 1.06 /spl mu/m, chirped pulses

Summary form only given. The generation of ultrashort pulses has been progressing in the recent years with outstanding advances in the shortening of pulses and the increase of their spectral regions of emission. The experiments were performed using a Ti:sapphire femtosecond laser and a CPA amplifier configuration based on a Ti:sapphire regenerative amplifier and Nd:phosphate glass head delivering 1 ns chirped pulses with maximum 100 mJ energy which can be compressed to duration less to 300 fs. We use a KDP type I/Type II collinear configuration. We generate a third harmonic pulse with a spectral bandwidth of 1.2 nm.