Using a photoalignment technique with a sulphonic azo-dye as the surfactant aligning material, we fabricated electrically tunable liquid crystal q-plates with topological charge 0.5, 1.5 and 3 for generating optical vortex beams with definite orbital angular momentum (OAM) 1,3 and 6 per photon (in units of hbar), respectively. We carried out several tests on our q-plates, including OAM tomography, finding excellent performances. These devices can have useful applications in general and quantum optics
Tunable liquid crystal q-plates with arbitrary topological charge / Slussarenko, Sergei; A., Murauski; T., Du; V., Chigrinov; Marrucci, Lorenzo; Santamato, Enrico. - In: OPTICS EXPRESS. - ISSN 1094-4087. - 19:5(2011), pp. 4085-4090. [10.1364/OE.19.004085]
Tunable liquid crystal q-plates with arbitrary topological charge
SLUSSARENKO, SERGEI;MARRUCCI, LORENZO;SANTAMATO, ENRICO
2011
Abstract
Using a photoalignment technique with a sulphonic azo-dye as the surfactant aligning material, we fabricated electrically tunable liquid crystal q-plates with topological charge 0.5, 1.5 and 3 for generating optical vortex beams with definite orbital angular momentum (OAM) 1,3 and 6 per photon (in units of hbar), respectively. We carried out several tests on our q-plates, including OAM tomography, finding excellent performances. These devices can have useful applications in general and quantum opticsI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
