Relativistic Self-Focusing of Hermite-cosine-Gaussian Laser Beam in Collisionless Plasma with Exponential Density Transition

• 来源期刊: 理论物理通讯（英文版）
• 年，卷（期）: 2019,（6）
• 页码范围: 736-740
• 页数: 5页
• 语种: 英文
• DOI: 10.1088/0253-6102/71/6/736

摘要

This work reveals an exploration of self-focusing of Hermite-cosine-Gaussian laser beam in a collisionless plasma under relativistic nonlinearity.Self-focusing along with self-trapping of Hermite-cosine-Gaussian laser beam are analyzed for different values of laser intensity,plasma density,and decentered parameters.Mathematical analysis displays that these parameters play a major role in achieving the stronger and earlier self-focusing.Further,a comparative study between self-focusing of Hermite-cosine-Gaussian laser beam with and without exponential density ramp profile is introduced.Plasma density transition with exponential profile is found to be more effective in order to have stronger self-focusing.The present analysis may lead to very useful applications in the field of efficient harmonic generation,laser driven fusion etc.