飞秒激光照射金箔的传热机理研究

Investigation on Heat Transfer Mechanism of Femtosecond Laser Interaction With Thin Gold Film

本文采用抛物线两步(PTS)模型和双曲线两步(HTS)模型模拟了超短脉冲激光(脉冲宽度小于100 fs)照射金箔的传热过程。本文将不同模型的模拟结果与破坏阀值的实验数据进行了比较,结果表明HTS模型更加符合实验结果。本文的数值研究为瞬态激光材料加工技术提供理论依据.

The interactions between the ultrashort laser,whose pulse width is less than 100 fs,and a thin gold film are simulated using parabolic two step(PTS) model and hyperbolic two step(HTS)model.The simulation results predicted by these two models are compared with the experimental data of damage threshold.It is concluded that HTS model is more in line with the experimental data.The present numerical work provides the theoretical support for laser-material processing.