Propagation of vectorial multi-Gaussian Schell-model beams beyond the paraxial approximation
Department of Physics, Longdong University, Qingyang, Gansu 745000, P.R. China
Received: 31 October 2014
Received in final form: 5 November 2014
Published online: 19 March 2015
Based on the vectorial Rayleigh-Sommerfeld formulas, the concept of vectorial non-paraxial multi-Gaussian Schell-model beams is introduced. The explicit expressions for the intensity distribution and degree of polarization of the vectorial non-paraxial multi-Gaussian Schell-model beams in free space were derived. The paraxial approximation is treated as a special case of our general expressions. The effect of the beam parameters on the intensity distribution and polarization property are investigated analytically and numerically when the longitudinal components is considered.
Key words: Optical Phenomena and Photonics
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2015