Conference paper
Improved space bandwidth product in image upconversion
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.
Language: | English |
---|---|
Year: | 2012 |
Pages: | 82400F-6 |
Proceedings: | SPIE Photonics West : Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XI |
ISSN: | 1996756x and 0277786x |
Types: | Conference paper |
DOI: | 10.1117/12.908372 |
ORCIDs: | Pedersen, Christian and Tidemand-Lichtenberg, Peter |