Institute of Physics, Chinese Academy of Sciences, Beijing National Laboratory for Condensed Matter Physics, Beijing 100190, China.
Opt Lett. 2010 Sep 15;35(18):3096-8. doi: 10.1364/OL.35.003096.
We experimentally demonstrated the contrast enhancement in a Ti:sapphire chirped-pulse amplification (CPA) laser with a noncollinear femtosecond optical-parametric amplifier. A total gain of 3.4 × 10(4) and pulse energy of 26 μJ were achieved. With the clean high-energy seeding pulse, the contrast ratio of the main amplified laser pulse to the amplified spontaneous emission in the Ti: sapphire CPA laser system was improved to around 10(10) within the time scale of hundreds of picoseconds.
我们通过实验证明了在非共线飞秒光参量放大器中钛宝石啁啾脉冲放大（CPA）激光的对比度增强。实现了总增益为 3.4×10(4)和 26μJ 的脉冲能量。利用清洁高能种子脉冲，在钛宝石 CPA 激光系统中，主放大激光脉冲与放大自发辐射的对比度比提高到了 10(10)左右，时间尺度为数百皮秒。
