Chapter 2

Fundamental Principles of Digital Holography

Abstract

In order to have a better understanding of holography, this chapter outlines the main aspects relevant for the optical and numerical imaging principles of DH. Two main physical principles—interference and diffraction—of holography are first introduced, which correspond to the procedures of hologram acquisition and its reconstruction. Based on the physical principles, computational methods for generating digital holograms and numerical reconstruction have been developed.

Keywords

Physical principles

Interference

Diffraction

Fresnel-Kirchhoff diffraction

Rayleigh-Sommerfeld diffraction

Fresnel approximation

Fraunhofer approximation

Computer-generated holography

Phase-shifting digital ...

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