Abstract
This paper focuses on the implementation of a nonlinear optical correlator in a 4f configuration. The system exploits the Kerr effect, specifically four-wave mixing, to enable the correlation and convolution of multiple optical fields composed of different objects in a single clock cycle. This approach offers a simpler implementation than other correlation systems, eliminating the need for counterpropagating waves and complex phase matching conditions. It exhibits both low-intensity correlation operations and high-intensity geometric images in its image plane, requiring the use of obstruction masks for optimal contrast. Experimental results confirm the feasibility of the concept, especially for applications in matrix multiplication and instantaneous optical processing operations.
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Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.
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Funding
Univ Angers. Laboratoire de Photonique d’Angers (LPHIA, EA 4464). SFR MATRIX. This research was funded through a doctoral contract awarded by the University of Angers and supplemented by financial support from ESAIP, covering half of the total expenses.
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Conceptualization: [G. B.]; Methodology: [G. B.]; Formal analysis and investigation: [J. B. Z.; C. C., G. B.]; Writing - original draft preparation: [J. B. Z.]; Writing - review and editing: [J. B. Z., G. B.; C. C.; M. C.]; Funding acquisition: [G. B., M. C.]; Supervision: [G. B.; C. C.; M. C.]
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Zinoune, JB., Cassagne, C., Chis, M. et al. Nonlinear optical correlator in 4f configuration exploiting Kerr effect for optical processing and matrix multiplication. Appl. Phys. B 130, 50 (2024). https://doi.org/10.1007/s00340-024-08176-2
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DOI: https://doi.org/10.1007/s00340-024-08176-2