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Single-beam recordings resulting in noise gratings and double-beam recordings resulting in both planar and noise gratings are studied for a range of beam ratios. The characteristics of both types of grating are determined by measuring the transmission of light through the processed hologram as a function of incident angle. It is shown that at the optimum replay wavelength the noise gratings dominate and the characteristics of planar gratings can be regained only by changing considerably the replay wavelength.
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Solymár et al. (1990) studied this question.
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