CHAPTER 5

Holographic Principles

5.1  INTRODUCTION

The basic principles of holography were originally developed by Dennis Gabor (1947), while he was seeking improvements for electron microscopy. Gabor’s wavefront reconstruction process led to recorded patterns that he called holograms (Greek: holos = whole). After the invention of lasers (1960), Leith and Upatnieks (U.S.) and Denisyuk (Russia) adapted Gabor’s technique to produce the first optical holograms.

The unique virtue of holograms is that they record and replay all the characteristics of light waves (i.e., phase, amplitude, and wavelength) going through the recording medium (e.g., a photographic emulsion). Hence, there is ideally no difference between seeing a natural object or scene, ...

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