Fields of an ultrashort tightly-focused laser pulse

Abstract

Analytic expressions for the electromagnetic fields of an ultrashort, tightly focused, linearly polarized laser pulse in vacuum are derived from scalar and vector potentials, using a small parameter which assumes a small bandwidth of the laser pulse. The derived fields are compared with those of the Lax series expansion and the complex-source-point approaches and are shown to be well-behaved and accurate even in the subcycle pulse regime. We further demonstrate that terms stemming from the scalar potential and due to a fast varying pulse envelope are non-negligible and may significantly influence laser-matter interactions.

References in corpus (6)

• Momentum signatures for Schwinger pair production in short laser pulses with a sub-cycle structure
• Photon-photon scattering in collisions of laser pulses
• Ultrarelativistic electron states in a general background electromagnetic field
• Electron acceleration driven by ultrashort and nonparaxial radially polarized laser pulses
• Robust signatures of quantum radiation reaction in focused ultrashort laser pulses
• An improved beam waist formula for ultrashort, tightly-focused linearly, radially, and azimuthally polarized laser pulses in free space

Cited by in corpus (5)

• Unveiling the transverse formation length of nonlinear Compton scattering
• The gravitational field of a laser beam beyond the short wavelength approximation
• Maxwell-consistent, symmetry- and energy-preserving solutions for ultrashort laser pulse propagation beyond the paraxial approximation
• Fields of an ultrashort tightly focused radially polarized laser pulse in a linear response plasma
• Electromagnetic fields of an ultra-short tightly-focused radially-polarized laser pulse