Journal
APPLIED PHYSICS B-LASERS AND OPTICS
Volume 96, Issue 4, Pages 731-734Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s00340-009-3626-5
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- Deutsche Forschungsgemeinschaft [GRK 1114, EXC 259]
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In the present study, a CMOS high speed camera system was employed for two-dimensional thermographic phosphor thermometry. By the pixelwise evaluation of the luminescence lifetimes, a temperature map of a phosphor layer can be obtained. Using spatially and temporally isothermal conditions in a tube furnace, a temperature lifetime characteristic was determined for the phosphor Mg4FGeO6: Mn and was compared with data obtained by point measurements using a photomultiplier tube. Both, the pixel-to-pixel and the shot-to-shot standard deviation were evaluated at different temperatures. Non-linearities and pixel-to-pixel inhomogeneities of the CMOS chip were characterised and corrected employing a homogeneous light source.
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