title: High-power and high-contrast optical parametric chirped pulse amplification in beta-BaB2O4 crystal.
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.
authors.affiliation: Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565, Japan. hideyo@ile.osaka-u.ac.jp
authors.forename: H
authors.initials: H
authors.lastname: Yoshida
authors.forename: E
authors.initials: E
authors.lastname: Ishii
authors.forename: R
authors.initials: R
authors.lastname: Kodama
authors.forename: H
authors.initials: H
authors.lastname: Fujita
authors.forename: Y
authors.initials: Y
authors.lastname: Kitagawa
authors.forename: Y
authors.initials: Y
authors.lastname: Izawa
authors.forename: T
authors.initials: T
authors.lastname: Yamanaka