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Focus shaping using cylindrical vector beams

Optics Express · 2002 · Vol. 10(7) · pp. 324–324

Qiwen Zhan✉(University of Minnesota)James R. Leger(University of Minnesota)

Abstract

We report a focus shaping technique using generalized cylindrical vector beams. A generalized cylindrical vector beam can be decomposed into radially polarized and azimuthally polarized components. Such a generalized cylindrical beam can be generated from a radially polarized or an azimuthally polarized light using a two-half-wave-plate polarization rotator. The intensity pattern at the focus can be tailored by appropriately adjusting the rotation angle. Peak-centered, donut and flattop focal shapes can be obtained using this technique.

Orbital Angular Momentum in Optics Near-Field Optical Microscopy Digital Holography and MicroscopyOpticsFocus (optics)PhysicsPolarization (electrochemistry)Circular polarizationBeam (structure)Light beamLinear polarizationRotation (mathematics)Elliptical polarization

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Radiation forces on a dielectric sphere in the Rayleigh scattering regime