We demonstrate the possibility of creating optical beams with phase singularities engraved into exotic intensity landscapes imitating the shapes of a large variety of diverse plane curves. To achieve this aim, we have developed a method for directly encoding the geometric properties of a selected curve into a single azimuthal phase factor without passing through indirect encryption methods involving lengthy numerical procedures. The outcome is utilized to mold the optic axis distribution of a liquid-crystal-based inhomogeneous waveplate. The latter is finally used to sculpt the wavefront of an input optical gaussian beam via the Pancharatnam-Berry phase.
Geometric-Phase Waveplates for Free-Form Dark Hollow Beams / Piccirillo, Bruno; Piedipalumbo, Ester; Enrico Santamato, And. - In: FRONTIERS IN PHYSICS. - ISSN 2296-424X. - Volume 8/Article 94:(2020), pp. 1-6. [10.3389/fphy.2020.00094]
Geometric-Phase Waveplates for Free-Form Dark Hollow Beams
Bruno Piccirillo
;Ester Piedipalumbo;
2020
Abstract
We demonstrate the possibility of creating optical beams with phase singularities engraved into exotic intensity landscapes imitating the shapes of a large variety of diverse plane curves. To achieve this aim, we have developed a method for directly encoding the geometric properties of a selected curve into a single azimuthal phase factor without passing through indirect encryption methods involving lengthy numerical procedures. The outcome is utilized to mold the optic axis distribution of a liquid-crystal-based inhomogeneous waveplate. The latter is finally used to sculpt the wavefront of an input optical gaussian beam via the Pancharatnam-Berry phase.File | Dimensione | Formato | |
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