Infrared hyperspectral upconversion imaging using spatial object translation

Louis Martinus Kehlet, Nicolai Højer Sanders, Peter Tidemand-Lichtenberg, Jeppe Seidelin Dam, Christian Pedersen

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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.
Original languageEnglish
Article number252894
JournalOptics Express
Issue number26
Number of pages6
Publication statusPublished - 2015


  • Multispectral and hyperspectral imaging
  • Infrared imaging
  • Upconversion

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