Abstract

In this Letter we report on the generation of sub-diffraction-limited pure longitudinal magnetization in optomagnetic materials. The interaction between polarization singularities of cylindrically polarized beams and optical vortices in the tight focus of a high numerical-aperture objective as well as the induced magnetic fields through the inverse Faraday effect are investigated. A pure longitudinal magnetization distribution throughout the entire focal plane, which has a 15% reduction in the lateral full width at half-maximum, is achieved by tightly focusing an azimuthally polarized vortex beam.

© 2013 Optical Society of America

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