A finite-difference model for intense light interactions with dielectrics in the ultrafast ionization regime
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arXiv
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| Main Authors: | , , , , , |
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| Format: | Preprint |
| Published: |
2026
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| _version_ | 1866911530478469120 |
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| author | Apportin, Julia Peltz, Christian Polynkin, Pavel Ivanov, Misha Fennel, Thomas Husakou, Anton |
| author_facet | Apportin, Julia Peltz, Christian Polynkin, Pavel Ivanov, Misha Fennel, Thomas Husakou, Anton |
| contents | We present a computationally efficient model that describes the interaction of intense, ultrashort infrared laser pulses with transparent materials in the strong ionization regime. The model is augmented with a detailed self-consistent description of the local response due to ionization and collisional plasma dynamics. It incorporates the direct solution of Maxwell's equations without approximations and rigorous boundary conditions for the input pulse, allowing us to study the ultrafast formation of over-critical nanoscaled plasmas in dielectric materials under the influence of intense tightly focused laser pulses. We perform a scan of the parameter space, find unexpected optima regimes for different experientially relevant parameters, and explain these maxima based on spatiotemporal dynamics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_19068 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | A finite-difference model for intense light interactions with dielectrics in the ultrafast ionization regime Apportin, Julia Peltz, Christian Polynkin, Pavel Ivanov, Misha Fennel, Thomas Husakou, Anton Plasma Physics Optics We present a computationally efficient model that describes the interaction of intense, ultrashort infrared laser pulses with transparent materials in the strong ionization regime. The model is augmented with a detailed self-consistent description of the local response due to ionization and collisional plasma dynamics. It incorporates the direct solution of Maxwell's equations without approximations and rigorous boundary conditions for the input pulse, allowing us to study the ultrafast formation of over-critical nanoscaled plasmas in dielectric materials under the influence of intense tightly focused laser pulses. We perform a scan of the parameter space, find unexpected optima regimes for different experientially relevant parameters, and explain these maxima based on spatiotemporal dynamics. |
| title | A finite-difference model for intense light interactions with dielectrics in the ultrafast ionization regime |
| topic | Plasma Physics Optics |
| url | https://arxiv.org/abs/2603.19068 |