标题： 飞秒激光相互作用中硅表面周期性结构形成的双温模型应用 显示英文标题

标题： Application of a two-temperature model for the investigation of the periodic structure formation on Si surface in femtosecond laser interaction

摘要： 我们考虑的是由少量飞秒激光脉冲照射表面导致表面波纹形成的案例。 为了解释这一现象，我们提出一个数值模型，该模型考虑了以下过程： (i) 激光照射与在硅样品上传播的电磁表面波的干涉；(ii) 自由载流子的形成和激光能量的吸收；(iii) 能量弛豫和电子-声子耦合。 我们进行了考虑表面波与激光干涉的数值计算，并呈现所得的模拟结果，以解释实验观察到的图案的形成机制。 显示英文摘要

摘要： We consider the case of surface irradiation by a small number of femtosecond laser shots leading to the formation of surface ripples. To explain this effect, we propose a numerical model that accounts for the following processes: (i) interference of the laser irradiation with an electromagnetic surface wave propagating on a silicon sample; (ii) free carrier formation and laser energy absorption; (iii) energy relaxation and electron-phonon coupling. We perform numerical calculations taking into account the interference of a surface wave with laser; and present the obtained simulation results in order to explain formation mechanisms of the experimentally observed patterns.