Transient scattering effects and electron plasma dynamics during ultrafast laser ablation of water
We study the dynamics of single-shot ultrafast laser ablation of a water-gas interface. We model the extremely nonlinear light-water interaction during the first picosecond by simulating the laser pulse propagation while dynamically calculating the spatial distribution of the dielectric function. We...
| Authors: | , |
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| Format: | article |
| Publication Date: | 2019 |
| Country: | España |
| Institution: | Universidad Complutense de Madrid (UCM) |
| Repository: | Docta Complutense |
| Language: | English |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/105014 |
| Online Access: | https://hdl.handle.net/20.500.14352/105014 |
| Access Level: | Open access |
| Keyword: | 535 Induced shockwaves Breakdown Waves Air Óptica (Física) 2209 Óptica |
| Summary: | We study the dynamics of single-shot ultrafast laser ablation of a water-gas interface. We model the extremely nonlinear light-water interaction during the first picosecond by simulating the laser pulse propagation while dynamically calculating the spatial distribution of the dielectric function. We make use of a finite-difference time-domain algorithm to solve Maxwell's equations and Rethfeld's multiple rate equation model to consider the local excitation of a dense electron plasma. We validate our model by comparing the simulated transient reflectivity with experimental results and find excellent agreement. (C) 2019 Optical Society of America |
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