High-power and high-contrast optical parametric chirped pulse amplification in beta-BaB2O4 crystal

Opt Lett. 2003 Feb 15;28(4):257-9. doi: 10.1364/ol.28.000257.

Abstract

We have developed a high-power laser system based on optical parametric chirped-pulse amplification in a beta-BaB2O4 crystal. The system provides gain of 10(8), a conversion efficiency of approximately 23%, an output energy of -65 mJ, and good amplified beam quality. The prepulse ratio has been measured to be 1.5 x 10(-8) or less. The spectral width was as broad as 16.5 nm centered at 1053 nm.