Correlation properties of diffusers for multiplex holography
Kral, Edward Lee
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A promising method of representing two-dimensional space-variant optical systems is through multiplex holography. The multiplexing operation requires the use of diffusers in the reference beam path to provide a unique code for each object wave. In this thesis, various types of diffusers are analyzed and compared within the framework of multiplex holography. A simple model is initially developed which can accommodate a wide range of diffuser families, including pure phase, pure amplitude, and combined amplitude and phase diffusers. Crosscorrelation and autocorrelation calculations are then presented for both spherical wave (chirp) illumination and plane wave illumination, and a signal-to-noise analysis based on these calculations is included. Finally, the implications of the analysis are thoroughly discussed, and recommendations for further research are given.