Toward a spherical spot distribution with 4π focusing of radially polarized light,

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physics.optics · 2019-07-16 · unverdicted · novelty 5.0

A differential filter plus shifted-beam approach produces a 3D deep-subwavelength azimuthal focal spot of volume λ³/128 with sidelobes below 20%.

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Far-field three-dimensional deep-subwavelength focal spot with azimuthal polarization physics.optics · 2019-07-16 · unverdicted · none · ref 11
A differential filter plus shifted-beam approach produces a 3D deep-subwavelength azimuthal focal spot of volume λ³/128 with sidelobes below 20%.