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2. Theoretical aspects
2.1 Registration process
Let's denote by A and A R the complex amplitudes respectively of the wave Σ scattered by the object and of the reference wave Σ R (figure 4 ) at hologram H.
The total amplitude at point H is : A H = A + A R
The recording medium is sensitive to the light energy W it receives per unit area, i.e. the product of illuminance (or intensity I) and exposure time τ .
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