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arXiv · 2504.00326

Shocking a Shock Wave for Nonlinear Summation of GPa Pressures

Jet Lem·Yun Kai·Maxime Vassaux·Steven E. Kooi·Keith A. Nelson·Thomas Pezeril
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Abstract

Exploring shock-shock interactions has been limited by experimental constraints, particularly in laser-induced shock experiments due to specialized equipment requirements. Herein, we introduce a tabletop approach to systematically investigate the excitation and superposition of dual laser-induced shock waves in water. Utilizing two laser pulses, spatio-temporally separated and focused into a confined water layer, we identify the optimal superposition leading to the highest combined shock pressure. Our results demonstrate that combining two shock waves each of $\sim$0.6~GPa pressure yields an overall shock pressure of $\sim$3~GPa. Our findings, suggesting an inherent nonlinear summation from the laser excitation process itself and highlights a new pathway for energy-efficient laser shock wave excitation.

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Jet Lem, Yun Kai, Maxime Vassaux, Steven E. Kooi, Keith A. Nelson, Thomas Pezeril. 2025-03-13. Shocking a Shock Wave for Nonlinear Summation of GPa Pressures. https://doi.org/10.1103/r5wy-znw4

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