阿秒
激光器
箔法
物理
等离子体
原子物理学
电子
高次谐波产生
光学
电场
极端紫外线
材料科学
超短脉冲
量子力学
复合材料
作者
Y. X. Zhang,Sergey Rykovanov,Mingyuan Shi,Chengpeng Zhong,X. T. He,B. Qiao,Matthew Zepf
标识
DOI:10.1103/physrevlett.124.114802
摘要
A new regime in the interaction of a two-color (ω,2ω) laser with a nanometer-scale foil is identified, resulting in the emission of extremely intense, isolated attosecond pulses-even in the case of multicycle lasers. For foils irradiated by lasers exceeding the blow-out field strength (i.e., capable of fully separating electrons from the ion background), the addition of a second harmonic field results in the stabilization of the foil up to the blow-out intensity. This is then followed by a sharp transition to transparency that essentially occurs in a single optical cycle. During the transition cycle, a dense, nanometer-scale electron bunch is accelerated to relativistic velocities and emits a single, strong attosecond pulse with a peak intensity approaching that of the laser field.
科研通智能强力驱动
Strongly Powered by AbleSci AI