Ms. Luoxian Zhou Profile

Luoxian Zhou

at Harbin Institute of Technology

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Proceedings Article | 18 June 2021 Paper

Influence of laser’s temporal profile on laser-induced stress wave

Luoxian Zhou, Hang Yuan, Chengyu Zhu, Zhuwei Lu

Proceedings Volume 11850, 118500I (2021) https://doi.org/10.1117/12.2599391

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In this paper, stress waves caused by laser pulses with three different temporal profile sets have been detected by using PVDF piezoelectric films. In the experiments, a solid target was irradiated by laser pulses in air. Firstly, the influence of laser pulse width on the stress wave’s pressure peak has been studied. The results show that the maximum pressure of the laser-induced stress wave will increase with increasing full width of laser pulse and there is a saturation width of the laser pulse. Then, the influence of laser pulse rise time on the stress waves’ pressure increasing process has been analyzed. The results show that a laser pulse with shorter rise time could produce the plasma as well as the stress wave, earlier. Earlier production time means that laser-induced stress wave has more time to improve its maximum pressure.

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