To study the effect of laser frequency-chirp on trapped electrons in laser wakefield acceleration
Vivek Sharma, Sandeep Kumar
Abstract
Abstract The wakefield excitation and electron acceleration is investigated in the presence of laser pulse with and without frequency-chirp in an under-dense plasma via particle in cell simulation. For this purpose, first 1D model of laser wakefield acceleration is revisited. The analytical expressions for the longitudinal wake-potential and wakefield generated behind the laser pulse are obtained. The results show that the wake-fields excited by laser pulses are strongly dependent on the chirp parameter. These results could be very useful as a starting point for optimization studies for a real LWFA experiment.
Topics & Concepts
ChirpLaserAccelerationPhysicsPulse (music)ElectronWakePlasma accelerationAtomic physicsExcitationOpticsMechanicsQuantum mechanicsDetectorLaser-Plasma Interactions and DiagnosticsLaser-induced spectroscopy and plasmaAtomic and Molecular Physics