Multifocal terahertz radiation by intense lasers in rippled plasma
محورهای موضوعی : Journal of Theoretical and Applied PhysicsReenu Gill 1 , Divya Singh 2 , Hitendra K. Malik 3
1 - Plasma Waves and Particle Acceleration (PWAPA) Laboratory, Department of Physics, Indian Institute of Technology Delhi
2 - Rajdhani College, Delhi University
3 - Plasma Waves and Particle Acceleration (PWAPA) Laboratory, Department of Physics, Indian Institute of Technology Delhi
کلید واژه: Coshyperbolic, Gaussian lasers, Laser index, Relativistic effect, Rippled plasma, Multifocal terahertz radiation,
چکیده مقاله :
AbstractThis paper presents a theoretical model for the generation of terahertz radiation by cosh-Gaussian laser beams of high intensity, which are capable of creating relativistic–ponderomotive nonlinearity. We find the components of the terahertz radiation for the relativistic laser plasma interaction, i.e. beating of the two lasers of same amplitude and different frequency in under dense plasma. We plot the electric field profile of the emitted radiation under the effect of lasers index. By creating a dip in peak of the incident lasers’ fields, we can achieve multifocal terahertz radiation.
