Presentation Information

11:30 AM - 11:45 AM JST(2:30 AM - 2:45 AM UTC)English Presentation

[10a-A22-10]GHz-Burst Mode Femtosecond Laser Ablation of Silicon: Ablation Efficiency Enhancement via Heat Accumulation and Melt Ejection

〇(PC)Ashkan MomeniBidzard¹, Koji Sugioka¹ (1.RIKEN, RAP)

Keywords:

Femtosecond Laser Processing,GHz burst,Laser ablation

In this study, we employ simulations to investigate the mechanisms underlying enhanced Si ablation efficiency in the GHz burst mode, focusing on the effects of sub-pulse number and sub-pulse frequency. Simulations based on the two-temperature model reveal that closely spaced sub-pulses within a GHz burst pulse induce transient melting and significantly enhance the ejection of molten material via recoil pressure.

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