Relativistic Self-Focusing of Hermite-cosh-Gaussian Laser Beam in Magnetoplasma with Exponential Plasma Density Ramp

作     者：Niti Kant Shivani Vij Sudarshan Kumar Chakravarti Juleshwar Prasad Kushwaha Vishal Thakur 

作者机构：Dcpartmcnt of PhysicsLovely Professional UniversityG.T.Hoad.Phagwara 144411PunjabIndia Department of Applied SciencesDAV Institute of Engineering&TechnologyJalandhar-144008PunjabIndia Department of PhysicsT.M.B.UniversityUhagalpurIndia 

出 版 物：《Communications in Theoretical Physics》 (理论物理通讯（英文版）)

年 卷 期：2019年第71卷第12期

页      面：1469-1474页

核心收录：

学科分类：080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0704[理学-天文学] 0803[工学-光学工程] 0702[理学-物理学] 

主　　题：self-focusing decentered parameter exponential density ramp Hermite-cosh-Gaussian beam 

摘      要：In the present manuscript,we analyse the effect of exponential plasma density ramp for relativistic selffocusing of Hermite-cosh-Gaussian laser pulse in *** exponential plasma density ramp is found to be more prominent in achieving the stronger self-focusing of Hermite-cosh-Gaussian laser beam in comparison to the tangential plasma density *** propose a theoretical model for propagation of Hermite-cosh-Gaussian laser pulse in magnetoplasma with exponential density *** nonlinearity in the medium arises because of the relativistic motion of electrons,being responsible for relativistic *** of the beam width parameter is set up by taking the expression for the dielectric function and following Wentzel-Kramers-Brillouin(WKB)with paraxial ray approximations for mode indices m=0,1 and *** of decentered parameter is also analysed,which results in stronger self-focusing of the Hermite-cosh-Gaussian laser *** self-focusing of laser beam is more pronounced in high density plasma with higher magnetic field.