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Practical Holography, 4th Edition by Stanislovas Zacharovas, Graham Saxby

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Chapter 5

Materials, Exposure, and Processing

You boil it in sawdust: you salt it in glue:

You condense it with locusts and tape:

Still keeping one principal object in view -

To preserve its symmetrical shape.

Lewis Carroll

The Hunting of the Snark

There are two ways in which the interference structure of a hologram can be stored: in a light-sensitive medium in analogue form and as digital data recorded in a computer. In this chapter, we discuss the various light-sensitive media used to store the interference fringe structure permanently and (more briefly) erasable materials. At present, there are four main types of recording material: silver halide emulsion, dichromated gelatin (DCG), photopolymer, and photoresist. The first three groups are ...

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