论文标题
在固体中高谐波生成过程中，从多光子到隧道电离的过渡
Transition from multiphoton to tunneling ionization in the process of high harmonic generation in solids
论文作者
论文摘要
固体中的高谐波产生正在成为强场固态物理学研究的重要方法。高谐波与驱动激光器之间的功率尺度关系在实验和理论上都进行了研究。功率量表依赖性的结果清楚地将相互作用分为两个制度。事实证明，通过激光对带隙的修饰对于从理论上再现实验结果非常重要。与Keldysh理论分析相结合，发现谐波生成过程从多光子激发转变为绝热隧道。
High harmonic generation in solids is becoming an important method for strong field solid state physics research. The power scale relationship between high harmonics and the driving laser is investigated both experimentally and theoretically. Results of the power scale dependence clearly divided the interaction into two regimes. The modification of the bandgap by intense laser proved to be very important for theoretically reproducing the experimental result. Combining with the Keldysh theory analysis, the harmonic generation process is found to be transitioned from multiphoton excitations to the diabatic tunneling.
