title: High-energy, high-contrast, multiterawatt laser pulses by optical parametric chirped-pulse amplification.
abstract: We describe a compact, reliable, high-power, and high-contrast noncollinear optical parametric chirped-pulse amplifier system. With a broadband Ti:sapphire oscillator and grating-based stretching and compression, the chirped pulses are amplified from 0.1 nJ to 122 mJ in type I beta-barium borate optical parametric chirped-pulse amplifiers with a total gain of over 10(9) at 10 Hz repetition rate. Pulse compression down to 19-fs duration achieved after amplification indicates a peak power of 3.2 TW at an average power of 0.62 W. The prepulse contrast is measured to be less than 10(-8) on picosecond time scales.
authors: Advanced Photon Research Center, Japan Atomic Energy Agency, 8-1 Umemidai, Kizugawa-city, Kyoto 619-0215, Japan. kiriyama.hiromitsu@jaea.go.jp
authors: Hiromitsu
authors: H
authors: Kiriyama
authors: Michiaki
authors: M
authors: Mori
authors: Yoshiki
authors: Y
authors: Nakai
authors: Yoichi
authors: Y
authors: Yamamoto
authors: Manabu
authors: M
authors: Tanoue
authors: Atsushi
authors: A
authors: Akutsu
authors: Takuya
authors: T
authors: Shimomura
authors: Shuji
authors: S
authors: Kondo
authors: Shuhei
authors: S
authors: Kanazawa
authors: Hiroyuki
authors: H
authors: Daido
authors: Toyoaki
authors: T
authors: Kimura
authors: Noriaki
authors: N
authors: Miyanaga