NASA NTRS · 19780048721
Upconversion of broadband infrared spectra
Abstract
An experimental device successfully upconverts IR radiation in the 3.2-5.0 micron wavelength range simultaneously to visible light at 0.80-0.88 microns, while preserving frequency coding and is thus applicable to IR spectroscopy. The 1.8-micron bandwidth of IR radiation that is upconverted without temperature or phase match tuning is the largest yet reported. The over-all system quantum efficiency of the upconverter/spectrometer system is 0.01% and could be improved to 0.4%.
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Gurski, T. R., Epps, H. W., Maran, S. P.. 1978-04-15. Upconversion of broadband infrared spectra. https://ntrs.nasa.gov/citations/19780048721
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