Guo‐zhen Yang, Yansong Chen, Shi-Hai Zhing, B. Dong, Dehuan Li
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A coherent system for performing an optical transform
A coherent optical system for performing an arbitrary linear transform is described. The system consists of a holographic mask and two Fourier lenses. A set of equations for determining the amplitude-phase distribution of the mask is given, and the mask is generated by combination of a computer-generated hologram and optical holography. As an example, a Walsh-Hadamard transform of order 32 is realized.<>
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