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Pump-probe technique is employed to investigate the dynamic process of shock wave in water induced by femtosecond laser pulse. The time resolved shadowgraphs and holograms were obtained experimentally, and the 2-dimensional phase maps were reconstructed from holograms. From the analysis of the phase maps, the evolution process within the laser–water interaction region was described and the formation...
The pulsed digital holography for high spatial resolution is reported, by which high spatial resolution either in the longitudinal or transverse directions can be obtained, due to the short coherence length of the femtosecond laser.
The dynamic process of transparent material ejection induced by femtosecond laser pulse is investigated by using pulsed digital holography. The spatiotemporal evolution of the plume structure is deduced based on the reconstructed phase information.
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