Denz C, Dellwig T, Lembcke J, Tschudi T
Opt Lett. 1996 Feb 15;21(4):278-80. doi: 10.1364/ol.21.000278.
We propose and demonstrate experimentally a method for utilizing a dynamic phase-encoded photorefractive memory to realize parallel optical addition, subtraction, and inversion operations of stored images. The phase-encoded holographic memory is realized in photorefractive BaTiO(3), storing eight images using Walsh-Hadamard binary phase codes and an incremental recording procedure. By subsampling the set of reference beams during the recall operation, the selectivity of the phase address is decreased, allowing one to combine images in such a way that different linear combination of the images can be realized at the output of the memory.
我们提出并通过实验证明了一种利用动态相位编码光折变存储器来实现存储图像的并行光学加法、减法和反转操作的方法。相位编码全息存储器在光折变BaTiO(3)中实现，使用沃尔什-哈达玛二元相位码和增量记录过程存储八幅图像。通过在读取操作期间对参考光束集进行子采样，相位地址的选择性降低，从而允许以这样一种方式组合图像，即可以在存储器的输出端实现图像的不同线性组合。
