Advanced Photon Research Center, JAEA, 8-1-7 Umemidai, Kizugawa, Kyoto 619-0215, Japan.
Phys Rev Lett. 2009 Dec 4;103(23):235003. doi: 10.1103/PhysRevLett.103.235003.
Laser light reflection by a relativistically moving electron density modulation (flying mirror) in a wake wave generated in a plasma by a high intensity laser pulse is investigated experimentally. A counterpropagating laser pulse is reflected and upshifted in frequency with a multiplication factor of 37-66, corresponding to the extreme ultraviolet wavelength. The demonstrated flying mirror reflectivity (from 3 x 10(-6) to 2 x 10(-5), and from 1.3 x 10(-4) to 0.6 x 10(-3), for the photon number and pulse energy, respectively) is close to the theoretical estimate for the parameters of the experiment.
实验研究了在等离子体中由高强度激光脉冲产生的尾波中，相对论运动电子密度调制（飞行镜）对激光光的反射。一束反向传播的激光脉冲被反射并以 37-66 的倍增因子（对应于极紫外波长）进行频率上移。所展示的飞行镜反射率（分别为光子数和脉冲能量的 3x10(-6) 到 2x10(-5)，和 1.3x10(-4) 到 0.6x10(-3)）接近实验参数的理论估计值。
