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近年来,随着CPA（脉冲啁啾放大）等技术的发展,激光功率有了很大提高,超短脉冲激光器及超短脉冲激光与物质相互作用的研究已发展成为当今世界最热门最前沿的领域。日前,基于CPA技术的超短脉冲激光系统已经达到PW（1015）量级。紫外超短脉冲激光在强场物理及惯性约束核聚变快速点火等研究中具有无可比拟的优势,在小型超快中子源、激光化学、激光生物学等众多领域有着广泛应用。 准分子激光器在放大超短脉冲方面具有独特的优势。基于它的气体性质和饱和能量低、超短脉冲放大过程中的非线性效应小,可不采用CPA路线而直接将超短脉冲激光放大到1019W/cm2,甚至更高。它还可以提供一个信噪比高达1010的干净脉冲,这对于激光靶物理实验非
In recent years, with the development of CPA (Pulse Chirp Amplification) and other technologies, the laser power has been greatly improved. The research on the interaction between ultrashort pulse lasers and ultrashort pulse lasers and materials has become the hottest frontier in the world field. Recently, ultra-short pulse laser systems based on CPA technology have reached the PW (1015) order of magnitude. UV ultrashort pulse laser has unparalleled advantages in the field of strong field physics and inertial confinement fusion fast ignition, and has been widely used in many fields such as small and ultrafast neutron source, laser chemistry and laser biology. Excimer lasers have unique advantages in amplifying ultrashort pulses. Due to its low gas content and low saturation energy, the nonlinear effect of the ultrashort pulse amplification is small, and the ultrashort pulse laser can be directly amplified to 1019 W / cm 2 or even higher without CPA. It also provides a clean pulse with a signal-to-noise ratio of up to 1010, which is ideal for laser target physics experiments