Diffractive optical elements that divide an input beam into a set of replicas are used in many optical applica- tions ranging from image processing to communications. Their design requires time-consuming optimization processes, which, for a given number of generated beams, are to be separately treated for one-dimensional and two-dimensional cases because the corresponding optimal efficiencies may be different. After generalizing their Fourier treatment, we prove that, once a particular divider has been designed, its transmission function can be used to generate numberless other dividers through affine transforms that preserve the efficiency of the original element without requiring any further optimization.
Gori, F., Martínez-Herrero, R., Korotkova, O., Piquero, G., de Sande, J.C.G., Schettini, G., et al. (2024). Affine diffractive beam dividers. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA. A, OPTICS, IMAGE SCIENCE, AND VISION, 41(3), 510-515 [10.1364/josaa.514290].
Affine diffractive beam dividers
Schettini, G.;Santarsiero, M.
2024-01-01
Abstract
Diffractive optical elements that divide an input beam into a set of replicas are used in many optical applica- tions ranging from image processing to communications. Their design requires time-consuming optimization processes, which, for a given number of generated beams, are to be separately treated for one-dimensional and two-dimensional cases because the corresponding optimal efficiencies may be different. After generalizing their Fourier treatment, we prove that, once a particular divider has been designed, its transmission function can be used to generate numberless other dividers through affine transforms that preserve the efficiency of the original element without requiring any further optimization.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
