Femtosecond laser-ablation of gel and water

Journal article (2020)

Authors

F.J. Hernandez Rueda Kavli institute of nanoscience Delft, QN/Kuipers Lab - AS , Debye Institute
Dashdeleg Baasanjav Debye Institute
Allard P. Mosk Debye Institute
Dries van Oosten Debye Institute
Research Group
QN/Kuipers Lab (AS) (TU Delft)
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Published Date

2020

Language

English

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Faculty

Applied Sciences

Department

QN/Quantum Nanoscience

Research Group

QN/Kuipers Lab

Abstract

We study the expansion dynamics of super-heated material during ultra-fast laser ablation of water and gel, using transient-reflectivity microscopy. We find that the expansion dynamics of water and gel, as observed during the first few nanoseconds, are extremely similar over a large range of ablation energies. We measure the crater topography of the gel after irradiation with a single laser shot, using optical interferometric microscopy, and estimate the mass that is ejected during the ablation. We calculate the laser energy deposited during irradiation by simulating the precise spatial distribution of the electron plasma density and temperature. We link the amount of removed mass obtained experimentally with the simulations of the deposited laser energy.

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