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A laser-based system for remotely measuring the surface temperature of parts coated with thermographic phosphor (Y 2 O 3 : Eu) is described. The obtained temperature-decay lifetime calibration measurements and empirical fits for Y 2 O 3 : Eu (4 52% Eu) over the temperature range 200-1000°C are presented. In addition, the results of a proof-of-principle test conducted...