title: Complex source point theory of paraxial and nonparaxial cosine-Gauss and Bessel-Gauss beams.
abstract: It shown how cosine-Gauss and Bessel-Gauss beams can be generated using the complex source point theory. Paraxial beams are treated first. An analytic expression is derived for the nonparaxial cosine-Gaussian beam, based on the complex source point approach, and numerical results are presented to illustrate its behavior. A way to generate nonparaxial Bessel-Gauss beams is also indicated.
authors: Nanophysics, Istituto Italiano di Tecnologia, Via Morego 30, Genova 16163, Italy; Singapore-MIT Alliance for Research and Technology (SMART) Centre, 1 Create Way, Singapore 138602, Singapore. colinjrsheppard@gmail.com
authors: Colin J R
authors: CJ
authors: Sheppard