Authors
Abstract
In this paper, the self-focusing property of an intense circularly polarized laser pulse in hot magnetized plasma is investigated theoretically. First, an envelope equation governing the spot-size of the laser beam for both left- and right-hand polarizations has been derived in the presence of a planar wiggler. Furthermore, non-linear dispersion relation of laser pulse is obtained by using Maxwell’s equations and relativistic fluid momentum equation. The numerical results show that with increasing the wiggler field, strength self-focusing of the right-hand polarization laser pulse is enhanced, while for the left-hand polarization, laser de-focusing is enhanced. In addition, it is shown that with increasing the wiggler frequency, the normalized laser power has an enhancing behavior. Besides, it is found that effect of the wiggler field on the density profile in the right-hand polarization is more prominent.
Keywords
2. M Abedi-Varaki and S Jafari, The European Physical Journal Plus 133 (2018) 137.
3. N Burnett and P B Corkum, Journal of the Optical Society of America B 6 (1989) 1195.
4. M Abedi-Varaki, Modern Physics Letters B 32 (2018)1850225.
5. M Abedi-Varaki, Physics of Plasmas 25 (2018) 023109.
6. M Abedi-Varaki and S Jafari, Journal of the Optical Society of America B 35 (2018) 1165.
7. M Abedi-Varaki, University Politehnica of Bucharest Scientific Bulletin, Series A- Applied Mathematics and Physics 80 (2018) 289.
8. NN Rao, P Shukla, and M Yu, Physics of Fluids 27 (1984) 2664.
9. P Shukla, R Bharuthram, and N Tsintsadze, Physica Scripta 38 (1988) 578.
10. N A Krall, A W Trivelpiece, and R A Gross, American Journal of Physics 41 (1973) 1380.
11. P Jha, R K Mishra, A K Upadhyay, and G Raj, Physics of Plasmas 14 (2007) 114504.
12. M Abedi-Varaki and S Jafari, Physics of Plasmas 24 (2017) 082309.
13. E Esarey, P Sprangle, J Krall, and A Ting, IEEE Journal of Quantum Electronics 33 (1997) 1879
)