Numerical modelling of laser filamentation

Peter E. Rees; Craig D. Stacey; Chris Stace; Roy G. Clarke

doi:10.1117/12.2538461

15 October 2019 Numerical modelling of laser filamentation

Peter E. Rees, Craig D. Stacey, Chris Stace, Roy G. Clarke

Proceedings Volume 11162, High Power Lasers: Technology and Systems, Platforms, Effects III; 111620L (2019) https://doi.org/10.1117/12.2538461
Event: SPIE Security + Defence, 2019, Strasbourg, France

Abstract

We report the development of a model written in the COMSOL multi-physics environment to simulate the onset and shortrange propagation of laser filaments in standard atmospheres at sea-level and 10 km altitude. We show excellent agreement with analytical and open-source experimental data for the initial collapse distance of the laser, as well as the free carrier density of the resulting plasma. Limitations of the model are presented as well as the potential for further development, including the incorporation of additional physics to study the effect of filamentation on radio frequency and optical propagation.

Citation Download Citation

Peter E. Rees, Craig D. Stacey, Chris Stace, and Roy G. Clarke "Numerical modelling of laser filamentation", Proc. SPIE 11162, High Power Lasers: Technology and Systems, Platforms, Effects III, 111620L (15 October 2019); https://doi.org/10.1117/12.2538461

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