Photorefractive and computational holography in the experimental generation of Airy beams

摘要

In this paper, we present the experimental generation of Airy beams viacomputational and photorefractive holography. Experimental generation of Airybeams using conventional optical components presents several difficulties andare practically infeasible. Thus, the optical generation of Airy beams has beenmade from the optical reconstruction of a computer generated hologramimplemented in a spatial light modulators. In the photorefractive holographytechnique, being used for the first time to our knowledge, the hologram of anAiry beam is constructed (recorded) and reconstructed (reading) optically in anonlinear photorefractive medium. The Airy beam experimental realization wasmade by a setup of computational and photorefractive holography using aphotorefractive Bi_{12}TiO_{20} crystal as holographic recording medium. Airybeams and Airy beam arrays were obtained experimentally as in accordance withthe predicted theory; and present excellent prospects for applications inoptical trapping and optical communications systems.