An improved beam waist formula for ultrashort, tightly-focused linearly, radially, and azimuthally polarized laser pulses in free space

Abstract

We derive an asymptotically accurate formula for the beam waist of ultrashort, tightly-focused fundamental linearly-polarized, radially-polarized, and azimuthally-polarized modes in free space. We compute the exact beam waist via numerical cubature to ascertain the accuracy with which our formula approximates the exact beam waist over a broad range of parameters of practical interest. Based on this, we describe a method of choosing parameters in the model given the beam waist and pulse duration of a laser pulse.

5 pages, 3 figures. Liang Jie Wong, Franz X. Kärtner, and Steven G. Johnson, "Improved beam waist formula for ultrashort, tightly focused linearly, radially, and azimuthally polarized laser pulses in free space,"

References in corpus (2)

• Electron acceleration driven by ultrashort and nonparaxial radially polarized laser pulses
• On the validity of the paraxial approximation for electron acceleration with radially polarized laser beams

Cited by in corpus (5)

• Direct laser acceleration of electrons in free-space
• Laser-Induced Linear Electron Acceleration in Free Space
• Fields of an ultrashort tightly-focused laser pulse
• All-optical three-dimensional electron pulse compression
• Electromagnetic fields of an ultra-short tightly-focused radially-polarized laser pulse