Article | REF: AF3340 V1

Optical holography - Principles

Author: Paul SMIGIELSKI

Publication date: October 10, 1998

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5. Registration and return conditions

5.1 Recording

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5.1.1 Light source coherence

To produce a hologram, the light source must have a certain coherence, enabling the reference wave and the object wave (coming from this light source) to interfere under the right conditions. This coherence has two aspects.

  • Spatial aspect

    The light source must be a point source. This is called spatial coherence. Let's look at a simplified hologram recording diagram. This is the diagram of an interferometer...

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