Kiriyama Hiromitsu, Mori Michiaki, Nakai Yoshiki, Yamamoto Yoichi, Tanoue Manabu, Akutsu Atsushi, Shimomura Takuya, Kondo Shuji, Kanazawa Shuhei, Daido Hiroyuki, Kimura Toyoaki, Miyanaga Noriaki
Advanced Photon Research Center, Japan Atomic Energy Agency, 8-1 Umemidai, Kizugawa-city, Kyoto 619-0215, Japan.
Opt Lett. 2007 Aug 15;32(16):2315-7. doi: 10.1364/ol.32.002315.
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.
我们描述了一种紧凑、可靠、高功率且高对比度的非共线光学参量啁啾脉冲放大系统。利用宽带钛宝石振荡器以及基于光栅的展宽和压缩，啁啾脉冲在I型β-硼酸钡光学参量啁啾脉冲放大器中从0.1 nJ放大至122 mJ，在10 Hz重复频率下总增益超过10⁹。放大后实现了脉宽压缩至19 fs，这表明在平均功率为0.62 W时峰值功率为3.2 TW。在皮秒时间尺度上测得的预脉冲对比度小于10⁻⁸。
