High-energy, high-contrast, multiterawatt laser pulses by optical parametric chirped-pulse amplification |
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| Authors: | Kiriyama Hiromitsu Mori Michiaki Nakai Yoshiki Yamamoto Yoichi Tanoue Manabu Akutsu Atsushi Shimomura Takuya Kondo Shuji Kanazawa Shuhei Daido Hiroyuki Kimura Toyoaki Miyanaga Noriaki |
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| Institution: | Advanced Photon Research Center, Japan Atomic Energy Agency, 8-1 Umemidai, Kizugawa-city, Kyoto 619-0215, Japan. kiriyama.hiromitsu@jaea.go.jp |
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| 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. |
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