Pure and achromatic spin-orbit shaping of light from Fresnel reflection off space-variant anisotropic media

Mikaël Ghadimi Nassiri (1) , Etienne Brasselet (1)

1 LOMA - Laboratoire Ondes et Matière d'Aquitaine

We propose an approach to achieve achromatic pure geometric phase shaping of light from anisotropic media by exploiting the fundamental laws of electromagnetic waves. Its practical implementation requires a cover layer made of a dispersive isotropic medium. The approach applies to any anisotropic material and any geometric phase spatial distribution and preserves the geometric phase reversal upon the reversal of the incident polarization handedness. An experimental demonstration is made over the whole visible range but can be extended to any wavelength range without conceptual issues.

Domaines: Physique [physics]; Optique [physics.optics]

Mikaël Ghadimi Nassiri, Etienne Brasselet. Pure and achromatic spin-orbit shaping of light from Fresnel reflection off space-variant anisotropic media. Physical Review A : Atomic, molecular, and optical physics [1990-2015], 2019, 99 (1), pp.013836 (1-5). ⟨10.1103/PhysRevA.99.013836⟩. ⟨hal-02104446⟩