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Updated: Jul 4, 2026

Evanescent Field Based Photoacoustics: Optical Property Evaluation at Surfaces
Published on: July 26, 2016
Evanescent field of vectorial highly non-paraxial beams
R Martínez-Herrero1, P M Mejías, A Carnicer
1Departamento de Optica, Facultad de Ciencias Físicas, Universidad Complutense de Madrid, 28040-Madrid, Spain.
Abstract:
In terms of the Fourier spectrum, a simple but general analytical expression is given for the evanescent field associated to a certain kind of non-paraxial exact solutions of the Maxwell equations. This expression enables one to compare the relative weight of the evanescent wave with regard to the propagating field. In addition, in those cases in which the evanescent term is significant, the magnitude of the field components across the transverse profile (including the evanescent features) can be determined. These results are applied to some illustrative examples.
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