Browsing by Author "Pellat-Finet P."
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Item Diffuser in Fractional Fourier Optics(OSA - The Optical Society, 2016) Patiño Vanegas, Alberto; Durand, P.E.; Pellat-Finet P.; Torres R.We propose a method for calculating a bandlimited diffuser with smooth spectrum in the Fresnel domain without any 2p phase ambiguities using the fractional Fourier transform. Such diffusers are necessary to avoid problems of speckles. © OSA 2016.Item α-bandlimited diffuser in fractional Fourier optics(SPIE, 2016) Patiño Vanegas, Alberto; Durand, P.E.; Torres R.; Pellat-Finet P.; Sheridan J.T.; Meuret Y.; Wyrowski F.We propose a method for calculating appropriate α-band limited diffusers using the fractional Fourier transform. In order to do this, we implement a method for performing a numerical interpolation in the fractional Fourier domain. Such diffusers with compact support in the Fresnel regime may be used in fractional Fourier optical systems where the use of diffusers produce speckles, e.g. digital holography or optical encryption. Numerical simulations are presented. © 2016 SPIE.