Spin-to-Orbital Angular Momentum Mapping of Polychromatic Light

Mushegh Rafayelyan (1) , Etienne Brasselet (1)

1 LOMA - Laboratoire Ondes et Matière d'Aquitaine

Reflective geometric phase flat optics made from chiral anisotropic media recently unveiled a promising route towards polychromatic beam shaping. However, these broadband benefits are strongly mitigated by the fact that flipping the incident helicity does not ensure geometric phase reversal. Here we overcome this fundamental limitation by a simple and robust add-on whose advantages are emphasized in the context of spin-to-orbital angular momentum mapping.

Domaines: Optique [physics.optics]

Mushegh Rafayelyan, Etienne Brasselet. Spin-to-Orbital Angular Momentum Mapping of Polychromatic Light. Physical Review Letters, 2018, 120 (21), pp.213903. ⟨10.1103/PhysRevLett.120.213903⟩. ⟨hal-01804149⟩