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Surface temperature imaging below 300 K using La2O2S:Eu

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Abstract

Surface temperature images obtained by the ratioing of visible 5D2 and 5D1 emissions from a La2O2S:Eu phosphor coating are demonstrated. The visible phosphor emissions permit imaging with standard CCD cameras. Temperature resolution to 1 K is achieved over a temperature range of 193–293 K.

© 1994 Optical Society of America

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