Publication: Research - peer-review › Conference article – Annual report year: 2012
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.
|Journal||Proceedings of SPIE, the International Society for Optical Engineering|
|Conference||SPIE Photonics West : Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XI|
|City||San Francisco, CA|
|Period||21/01/12 → 26/01/12|
|Citations||Web of Science® Times Cited: 1|
- Infrared imaging, Upconversion
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