Abstract

Partial reflection of linearly polarized Laguerre–Gaussian beams incident at a dielectric interface are studied beyond the paraxial regime. Based on the angular spectrum method and Taylor series expansion, we derive exact analytical expressions for the reflected electric field. This result holds in both the paraxial and nonparaxial regimes. The result is then extended to beams of arbitrary polarization and used to analytically calculate the transverse and longitudinal shifts of the beams’ center of gravity. Finally, several numerical examples are performed to verify the analytical formulas we derived near the Brewster angle.

© 2013 Optical Society of America

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