Signal distortion noise in volume phase holograms |
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Authors: | Ping Sheng W J Burke H A Weakliem |
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Institution: | (1) RCA Laboratories, 08540 Princeton, New Jersey, USA |
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Abstract: | Signal distortion noise in volume phase holograms is analysed for the case in which the object beam consists of two plane waves. It is shown that, for a given (on-Bragg) signal diffraction efficiency, the magnitude of the signal distortion noise is inversely proportional to the square of crystal thickness. Furthermore, as a function of the angular position of the reconstruction beam, the signal distortion noise has two peaks: one at the Bragg angle and the other at a deviation ![Delta](/content/wx8m87104w854243/xxlarge916.gif)
0 from the Bragg angle, where ![Delta](/content/wx8m87104w854243/xxlarge916.gif)
0 is a function of relative angles between the components of the object beam and the reference beam. The on-Bragg peak of the signal distortion noise is experimentally located for volume phase holograms recorded in Fe-doped LiNbO3. The measured angular position is found to be in accord with the calculated value. |
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