Year: 2025
Type: article
Abstract: Plasma shielding is a critical limiting factor in enhancing the quality and efficiency of femtosecond laser processing.This study investigates the temporal evolution of femtosecond-laser-induced plasma in water, unveiling a transient recovery window occurring between plasma recombination completion and shockwave generation.During this window, the plasma density returns to baseline levels and exerts a negligible influence on probe light transmission.Furthermore, the plasma recombination time exhibits a strong dependence on the pump pulse energy.The pump pulse energy densities of 2.15, 2.77, and 3.72 J/cm 2 correspond to plasma recombination time of 231.0, 125.4,and 112.2 ps, respectively.This advancement could potentially offer a valuable reference for optimizing pulse sequences in high-repetition-rate processing.
Source: Chinese Optics Letters
Authors: Jun Deng, Shujun Fang, Zhuoyu Zhang, Haijun Lü, Xiaohua Lü, Xiuli liu, Tingwei Quan, Shangbin Chen, Jing wang, Shaoqun Zeng
Language: English
Subfield: Computational Mechanics
Field: Engineering
Domain: Physical Sciences
Open Access status: bronze
Award: G7629313643
OpenAlex ID: W4414675535