Improved space bandwidth product in image upconversion

Jeppe Seidelin Dam; Christian Pedersen; Peter Tidemand-Lichtenberg

doi:10.1117/12.908372

15 February 2012 Improved space bandwidth product in image upconversion

Jeppe Seidelin Dam; Christian Pedersen; Peter Tidemand-Lichtenberg;

Author Affiliations +

Proceedings Volume 8240, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XI; 82400F (2012) https://doi.org/10.1117/12.908372
Event: SPIE LASE, 2012, San Francisco, California, United States

Abstract

We present a technique increasing the space bandwidth product of a nonlinear image upconversion process used for spectral imaging. The technique exploits the strong dependency of the phase-matching condition in sum frequency generation (SFG) on the angle of propagation of the interacting fields with respect to the optical axis. Appropriate scanning of the phase-match condition (Δk=0) while acquiring images, allow us to perform monochromatic image reconstruction with a significantly increased space bandwidth product. We derive the theory for the image reconstruction process and demonstrate acquisition of images with >10 fold increase in space bandwidth product, i.e. the number of pixel elements, when compared to upconversion of images using fixed phase-match conditions.

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Jeppe Seidelin Dam, Christian Pedersen, Peter Tidemand-Lichtenberg, "Improved space bandwidth product in image upconversion", Proc. SPIE 8240, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XI, 82400F (15 February 2012); doi: 10.1117/12.908372; https://doi.org/10.1117/12.908372

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