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Proceedings Paper

Improved space bandwidth product in image upconversion
Author(s): Jeppe Seidelin Dam; Christian Pedersen; Peter Tidemand-Lichtenberg
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Paper 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.

Paper Details

Date Published: 15 February 2012
PDF: 6 pages
Proc. SPIE 8240, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XI, 82400F (15 February 2012);
Show Author Affiliations
Jeppe Seidelin Dam, Technical Univ. of Denmark (Denmark)
Christian Pedersen, Technical Univ. of Denmark (Denmark)
Peter Tidemand-Lichtenberg, Technical Univ. of Denmark (Denmark)

Published in SPIE Proceedings Vol. 8240:
Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XI
Konstantin L. Vodopyanov, Editor(s)

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