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Photon spin-to-orbital angular momentum conversion via an electrically tunable q-plate

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5 Author(s)
Piccirillo, Bruno ; Dipartimento di Scienze Fisiche, Università di Napoli “Federico II”, Complesso Universitario di Monte S. Angelo, 80126 Napoli, Italy ; DAmbrosio, Vincenzo ; Slussarenko, Sergei ; Marrucci, Lorenzo
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Exploiting electro-optic effects in liquid crystals, we achieved real-time control of the retardation of liquid-crystal-based q-plates through an externally applied voltage. Electro-optic q-plates can be operated as electrically driven converters of photon spin into orbital angular momentum, enabling a variation of the orbital angular momentum probabilities of the output photons over a time scale of milliseconds.

Published in:

Applied Physics Letters  (Volume:97 ,  Issue: 24 )