Abstract
An electromagnetic short laser pulse is considered as amplitude modulated in time. To study the advancement of amplitude-modulated short laser pulses in a plasma, we preformed numerical modelling using time-dependent generalized nonlinear Schrödinger wave equation. This analysis is limited to one-dimensional geometry, as the transverse profile is considered as uniform. Paraxial like approach is used to derive dimensionless nonlinear pulse-compression parameter equation. The effect of amplitude modulation on nonlinear compression is studied. A significant enhancement in laser intensity is observed due to the amplitude modulation of the electromagnetic pulse. We observe about 50% increase in laser intensity as compared to the unmodulated laser pulse. Our results may be useful in the clean and affordable energy goal of sustainable development goals.
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