Application of orthogonal data storage volume holography to optical image correlation

Koichi Sayano; George A. Rakuljic; George A. Brost

doi:10.1117/12.177342

3 June 1994 Application of orthogonal data storage volume holography to optical image correlation

Koichi Sayano, George A. Rakuljic, George A. Brost

Proceedings Volume 2216, Photonics at the Air Force Photonics Center; (1994) https://doi.org/10.1117/12.177342
Event: SPIE's International Symposium on Optical Engineering and Photonics in Aerospace Sensing, 1994, Orlando, FL, United States

Abstract

A compact optical image correlator using orthogonal, wavelength-multiplexed Fourier transform holograms recorded in a photorefractive crystal is demonstrated. Cross-correlation and autocorrelation measurements were obtained using randomly selected test image against the set of reference images stored in the orthogonal data storage volume hologram. Over 20 holograms were recorded in the 645- to 651-nm wavelength range with >2% autocorrelation efficiency and 3-angstrom wavelength separation. A low-power tunable external cavity semiconductor laser was used for readout, further demonstrating the portability of this approach. The translation invariance of the input images was also investigated.

Citation Download Citation

Koichi Sayano, George A. Rakuljic, and George A. Brost "Application of orthogonal data storage volume holography to optical image correlation", Proc. SPIE 2216, Photonics at the Air Force Photonics Center, (3 June 1994); https://doi.org/10.1117/12.177342

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