Electron acceleration by low order axisymmetric modes of Hermite-Cosh-Gaussian laser pulses in vacuum

Abstract

Hermite-Cosh-Gaussian (H-ch-G) laser pulse is proposed for effective electron acceleration and energy gain by exploring its low order axisymmetric modes in vacuum. The intensity distribution of H-ch-G laser is influenced by the TEM(m, n) modes ordered Hermite polynomial, decentered parameter (b) controlled Cosh function and Gaussian beam function. The increase in decentered parameter b associated with Cosh function, changes its properties from fundamental Gaussian(b = 0) to more complex Gaussian types with ring-shaped (b ∼ 2) forms. As a result, it operates well enough to quickly accelerate electrons to exceedingly high energies in a short period of time. The laser pulse order TEM00, TEM01 or TEM10 are the low order axisymmetric modes of H-ch-G laser beam. The analytic results show that altering the mode indices (m, n) and decentered parameter (b) combination leads to a remarkable rise in electron energy with laser intensity (∼ 10 21 W cm − 2 ) to the order of GeV in vacuum.

Calculation of trapping optical forces induced by a focused continuous Hermite Gaussian beam on a nano-dielectric spherical particle

“…Another type of important laser beams which has a rectangular symmetry along the propagation axis and has a useful applications is the Hermite Gaussian (HG) beam. These HG beams have really shown an extensive use in the field of optical manipulation and acceleration [29][30][31][32][33][34][35], free-space optical communication [36,37] and nonlinear optics [38,39]. Since the last few years, the trapping characteristics of different Hermite Gaussian beams such as elegant Hermite-Cosine-Gaussian beam [40], Hermite Gaussian vortex beam [41], elegant third-order Hermite-Gaussian beams [42] and elegant Hermite-Cosh-Gaussian beams [43] have been theoretically studied.…”