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23 October 2023 Filament-mediated disruption of laser propagation
C. D. Stacey, A. G. Wishart, C. Stace, H. White, C. Percy, K. Rigby, G. Vieux, D. A. Jaroszynski
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Proceedings Volume 12739, High Power Lasers: Technology and Systems, Platforms, Effects VI; 1273904 (2023) https://doi.org/10.1117/12.2673960
Event: SPIE Security + Defence, 2023, Amsterdam, Netherlands
Abstract
We present experimental results of the disruption of a free-space continuous wave (CW) laser beam through its interaction with a separate, ultrafast laser induced filament bundle. Break-up of the CW beam and a significant reduction of its far-field peak irradiance has been predicted by numerical modelling and confirmed by in experiments. The degree of disruption is measured in laboratory-scale tests and found to depend on pulse energy, crossing angle and filament repetition rate. Disruption is also observed to exceed that predicted by our model. These effects are quantified experimentally and compared with numerical predictions and possible explanations for discrepancies are presented and future development steps discussed.
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C. D. Stacey, A. G. Wishart, C. Stace, H. White, C. Percy, K. Rigby, G. Vieux, and D. A. Jaroszynski "Filament-mediated disruption of laser propagation", Proc. SPIE 12739, High Power Lasers: Technology and Systems, Platforms, Effects VI, 1273904 (23 October 2023); https://doi.org/10.1117/12.2673960
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KEYWORDS
Modeling
Femtosecond phenomena
Zemax
Plasma
Pulsed laser operation
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