Holography as interference recording phenomenon. Speckles patterns and interference with plane waves. Sources characteristics (coherence and polarization). Materials and processes for holography. Images elaboration: filtering and processing with 4f setup.
CFU: 3Total hours of the course: 75 Contact hours for Lectures: 25
Further information
Office hours: After each lesson, when requested by students
Type of Assessment
Traditional oral test
Course program
Course Contents (detailed program): - Wave equation. Scalar approximation. Plane waves and spatial frequencies. Diffraction. Fresnel and Fraunhofer approximation.- One-dimensional Fourier transforms. Convolution and correlation. Invariant linear systems: impulsive response, transfer function. 2D Fourier transforms. Fourier-Bessel transforms. - Diffraction on the Fraunhofer approximation; amplitude and phase apertures and gratings. Transmission function of a simple lens.The lens as a Fourier processor. Auto-correlation theorem.- Optical systems analysis: diaphragms and pupils. Optical invariants. Optical systems resolution. Cut frequency. Shannon theorem and space-band. Optical processors and spatial filtering. 4f processor. Fresnel-Arago experiment. Abbe-Porter experiment.- Interference on the scalar approximation. Physical principles of holography. In-axis holograms (Gabor), out of axis (Leith and Upatniesks), in reflection (Denisyuk). Recording and reconstruction with a negative holographic process: Fourier analysis. Volume holograms. Kogelnik theory on coupled waves. Speckle patterns. Orthoscopic and pseudoscopic images. “Rainbow” holograms