He Q B, Yeh P, Hu L J, Lin S P, Yeh T S, Tu S L, Yang S J, Hsu K
Appl Opt. 1993 Jun 10;32(17):3113-5. doi: 10.1364/AO.32.003113.
We report the results of our experimental investigation on a shift-invariant photorefractive image correlator that uses a thin crystal plate of Fe:LiNbO(3), which operates in the Raman-Nath regime of diffraction.