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17 May 2019 Relativistic self-focusing in interaction of intense laser beam and exponential decay underdense inhomogeneous plasma
Zhang Geng, Xiongping Xia
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Proceedings Volume 11170, 14th National Conference on Laser Technology and Optoelectronics (LTO 2019); 111701I (2019) https://doi.org/10.1117/12.2533411
Event: Fourteenth National Conference on Laser Technology and Optoelectronics, 2019, Shanghai, China
Abstract
In the laser and plasma interaction, Wong et al. (2018) and Fuchs et al. (2000) have found that the plasmas present the approximate exponential or exponential decay variation of density in experiments. In the paper, based on their researched results, we investigated beam relativistic self-focusing in interaction of intense laser beam and axially exponential decay underdense inhomogeneous plasma. The results show that the relativistic nonlinear effect gives rise to obvious self-focusing in homogeneous plasma and inhomogeneous plasma, comparing with beam self-focusing in homogeneous plasma, exponential decay inhomogeneous plasma is more benefit to form relatively steady self-focusing. Moreover, plasma inhomogeneity promotes self-focusing. In addition, when the amplitude of plasma inhomogeneity increases, beam self-focusing would obviously strengthen, while with the increase of the degree of exponential decay, self-focusing would slightly decrease.
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Zhang Geng and Xiongping Xia "Relativistic self-focusing in interaction of intense laser beam and exponential decay underdense inhomogeneous plasma", Proc. SPIE 11170, 14th National Conference on Laser Technology and Optoelectronics (LTO 2019), 111701I (17 May 2019); https://doi.org/10.1117/12.2533411
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KEYWORDS
Electromagnetism
Pulsed laser operation
Analytical research
Chromium
Wave propagation
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