We present a tunable liquid crystal device that converts pure orbital angular momentum eigenmodes of a light beam into equal-weight superpositions of opposite-handed eigenmodes and vice versa. For specific input states, the device may thus simulate the behavior of a =pi/2 phase retarder in a given two-dimensional orbital angular momentum subspace, analogous to a quarter-wave plate for optical polarization. A variant of the same device generates the same final modes starting from a Gaussian input.
Liquid crystal spatial-mode converters for the orbital angular momentum of light / Slussarenko, Sergei; Piccirillo, Bruno; Vladimir, Chigrinov; Marrucci, Lorenzo; Santamato, Enrico. - In: JOURNAL OF OPTICS. - ISSN 2040-8978. - 15:(2013), pp. 025406-1-025406-6. [10.1088/2040-8978/15/2/025406]
Liquid crystal spatial-mode converters for the orbital angular momentum of light
SLUSSARENKO, SERGEI;PICCIRILLO, BRUNO;MARRUCCI, LORENZO;SANTAMATO, ENRICO
2013
Abstract
We present a tunable liquid crystal device that converts pure orbital angular momentum eigenmodes of a light beam into equal-weight superpositions of opposite-handed eigenmodes and vice versa. For specific input states, the device may thus simulate the behavior of a =pi/2 phase retarder in a given two-dimensional orbital angular momentum subspace, analogous to a quarter-wave plate for optical polarization. A variant of the same device generates the same final modes starting from a Gaussian input.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.