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Elegant Hermite-Gaussian and Laguerre-Gaussian beams at a dielectric interface

Nasalski W.

Optica Applicata

2010

Vol. 40, nr 3

615--622

Basic features of narrow optical beam interactions with a dielectric interface are analysed. It is shown that two types of paraxial beams - elegant Hermite-Gaussians of linear polarization and elegant Laguerre-Gaussians of circular polarization - can be treated as vector normal modes of the interface. Excitation of higher-order modes by cross-polarization coupling is described and changes of mode indices induced by transmission and reflection matrices are evaluated. Optical vortex excitation and splitting are theoretically predicted and confirmed by numerical simulations.