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Article | REF: AF3332 V1

Fluid mechanics - Visualization by index variation

Authors: Jean-Pierre PRENEL, Paul SMIGIELSKI

Publication date: July 10, 1999

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5. Holographic techniques

5.1 The principle of holography [35]

Consider the diagram in figure 11 . The two waves å R and ∑ from the same coherent light source (here a ruby laser) are made to interfere in the H plane. The ∑ wave carries information about the object (amplitude and phase) and the ∑ R wave, unperturbed by the object, is a reference wave.

Let, Ae jϕ and A R ejφ

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