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Distribution of polarization vector for evanescent optical near-field

Iftiquar, SM (2008) Distribution of polarization vector for evanescent optical near-field. In: Journal of Modern Optics, 55 (11). pp. 1801-1810.

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Abstract

An analysis with the Fresnel formula is presented as possible ways of creating an elliptically polarized evanescent optical field from a linearly polarized laser beam.Under a certain condition a quadrature phase difference is created while light faces total reflection. It has been observed that there is a translational symmetry of the field normal to the plane of incidence (Y-axis); in this direction the field is always linearly polarized. In the other orthogonal directions the field can be elliptically polarized. Looking normal to the plane of the interface (along the Z-axis), one can see an elliptical polarization with varying ellipticity at various z.A circular polarization is also achievable at some particular combination of angle of polarization vector and angle of incidence.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Taylor and Francis Group.
Keywords: Evanescent field;circular polarization;zones matrix.
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 17 Jul 2008
Last Modified: 19 Sep 2010 04:47
URI: http://eprints.iisc.ernet.in/id/eprint/15070

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