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Infrared hyperspectral upconversion imaging using spatial object translation
Louis Martinus Kehlet, 1 Nicolai Sanders, 2 Peter Tidemand-Lichtenberg, 1 Jeppe Seidelin Dam, 1 Christian Pedersen 1
1  DTU Fotonik, Technical University of Denmark, DK-4000 Roskilde, Denmark
2  DTU Nutech, Technical University of Denmark, DK-4000 Roskilde, Denmark

Published: 24 December 2015 by The Optical Society in Optics Express
The Optical Society, Volume 23; 10.1364/oe.23.034023
Abstract: In this paper hyperspectral imaging in the mid-infrared wavelength region is realised using nonlinear frequency upconversion. The infrared light is converted to the near-infrared region for detection with a Si-based CCD camera. The object is translated in a predefined grid by motorized actuators and an image is recorded for each position. A sequence of such images is post-processed into a series of monochromatic images in a wavelength range defined by the phasematch condition and numerical aperture of the upconversion system. A standard USAF resolution target and a polystyrene film are used to impart spatial and spectral information unto the source.
Keywords: hyperspectral imaging, Object Translation, Imaging in the mid Infrared, wavelength, images, camera, Upconversion Imaging, Spatial Object
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