Abstract

To achieve high precision and quality processing of ZrO₂ ceramics, the ultrafast laser-material interaction mechanism must be deeply understood and revealed by multi-time scale processing phenomena observation. In this work, we proposed the pump-probe imaging with focusing probe pulse integrated with a high-speed camera to observe the multiple timescale processing phenomena inside an opaque ZrO₂ ceramics sample, including the electron excitation occurred in the femtosecond to picosecond (ps) timescales, shockwave (SW) propagation in the nanosecond (ns) timescale, plasma evolution in 100 ns timescale and hole formation of ZrO₂ in millisecond (ms) to second (s) timescales.

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