2ND-HARMONIC GENERATION WITH TRAVELING-WAVE PULSES

We experimentally studied properties of traveling-wave excitation and traveling-wave pulse compression for a Nd:glass laser system with a st reak camera. These properties were extended to second-harmonic generat ion with a type-II KDP crystal. We found that the second-harmonic puls e generated from the chirped-fundamental pulse also has a good chirp l inearity, but the spectral bandwidth and temporal duration were reduce d. We demonstrated the effective subpulse suppression in the compresse d pulse with the second-harmonic generation. The pulse with tilted wav e front, short wavelength and high contrast ratio can be obtained by t he second-harmonic generation of traveling-wave pulse.