We discuss a numerical method based on Lanczos reduction of modeling nonparaxial propagation of a cylindrical symmetric beam. To illustrate the performance and demonstrate the significant difference between nonparaxial and paraxial beams, we consider Gaussian beam propagation in two different settings.
© 2000 Optical Society of America
(000.4430) General : Numerical approximation and analysis
(060.2310) Fiber optics and optical communications : Fiber optics
(260.1960) Physical optics : Diffraction theory
(350.5500) Other areas of optics : Propagation
Q. Luo and C. T. Law, "Nonparaxial propagation of a cylindrical beam with Lanczos reduction," Opt. Lett. 25, 869-871 (2000)