Abstract

Analytic expressions for the fields of a tightly focused radially polarized Gaussian laser beam are derived, accurate to ${ϵ}^5$, where ϵ is the associated diffraction angle. The fields satisfy Maxwell’s equations, and the calculated beam power based on them is significantly different from that of the paraxial-approximation fields.

© 2006 Optical Society of America

Method for accurate description of a radially polarized Gaussian laser beam beyond the paraxial approximation

Hong Luo, Shiyang Liu, Zhifang Lin, and C. T. Chan
Opt. Lett. 32(12) 1692-1694 (2007)

Description of a radially polarized Laguerre-Gauss beam beyond the paraxial approximation

Shaohui Yan and Baoli Yao
Opt. Lett. 32(22) 3367-3369 (2007)

Validity of the paraxial approximation for electron acceleration with radially polarized laser beams

Vincent Marceau, Charles Varin, and Michel Piché
Opt. Lett. 38(6) 821-823 (2013)

Gaussian beam propagation beyond the paraxial approximation

G. P. Agrawal and D. N. Pattanayak
J. Opt. Soc. Am. 69(4) 575-578 (1979)

Electromagnetic Gaussian beams beyond the paraxial approximation

C. J. R. Sheppard and S. Saghafi
J. Opt. Soc. Am. A 16(6) 1381-1386 (1999)