The optical implementation of a photorefractive fractional joint transforms correlator was studied. It was based on a non-degenerated four-wave mixing in a photorefractive crystal BSO. The fractional Fourier transform of the input scene, and a fractional Fourier transform of the reference image, were found interfere in the photorefractive material BSO to produce a phase hologram. The experimental results of the study of sensibility from the correlator to the rotation of the input patterns were presented.
|Number of pages||4|
|Journal||Proceedings of SPIE - The International Society for Optical Engineering|
|State||Published - 2001|
|Event||4th Iberoamerican Meeting on Optics and 7th Latin American Meeting on Optics, Lasers, and Their Applications - Tandil, Argentina|
Duration: 3 Sep 2001 → 7 Sep 2001
- Fractional Fourier transform
- Nonlinear optics