We present newly conceived liquid-crystal-based retardation waveplates in which the optic axis distribution has a “superelliptically” symmetric azimuthal structure with a topological charge q superimposed. Such devices, named superelliptical q-plates, act as polarization-to-spatial modes converters that can be used to produce optical beams having peculiar spiral spectra. These spectra reflect the topological charge of the optic axis distribution as well as the symmetry properties of the underlying superellipse. The peculiar capability of q-plates of producing optical modes entangled with respect to spin and orbital angular momentum is here extended to superelliptical q-plates in order to create more complex optical modes structurally inseparable with respect to polarization and spatial degrees of freedom. Such superelliptical modes can play a crucial role in studying polarization singularities or to develop polarization metrology.

Pancharatnam-Berry phase optical elements for generation and control of complex light: Generalized superelliptical q-plates / Piccirillo, Bruno; Kumar, Vijay; Marrucci, Lorenzo; Santamato, Enrico. - 9379:(2015), p. 937907. (Intervento presentato al convegno SPIE OPTO, 2015, San Francisco, California, United States) [10.1117/12.2078372].

Pancharatnam-Berry phase optical elements for generation and control of complex light: Generalized superelliptical q-plates

PICCIRILLO, BRUNO;MARRUCCI, LORENZO;SANTAMATO, ENRICO
2015

Abstract

We present newly conceived liquid-crystal-based retardation waveplates in which the optic axis distribution has a “superelliptically” symmetric azimuthal structure with a topological charge q superimposed. Such devices, named superelliptical q-plates, act as polarization-to-spatial modes converters that can be used to produce optical beams having peculiar spiral spectra. These spectra reflect the topological charge of the optic axis distribution as well as the symmetry properties of the underlying superellipse. The peculiar capability of q-plates of producing optical modes entangled with respect to spin and orbital angular momentum is here extended to superelliptical q-plates in order to create more complex optical modes structurally inseparable with respect to polarization and spatial degrees of freedom. Such superelliptical modes can play a crucial role in studying polarization singularities or to develop polarization metrology.
2015
Pancharatnam-Berry phase optical elements for generation and control of complex light: Generalized superelliptical q-plates / Piccirillo, Bruno; Kumar, Vijay; Marrucci, Lorenzo; Santamato, Enrico. - 9379:(2015), p. 937907. (Intervento presentato al convegno SPIE OPTO, 2015, San Francisco, California, United States) [10.1117/12.2078372].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/619792
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