Two-color planar laser-induced fluorescence thermometry in aqueous solutions.
We demonstrate a two-color planar laser-induced fluorescence technique for obtaining two-dimensional temperature images in water. For this method, a pulsed Nd:YAG laser at 532 nm excites a solution of temperature-sensitive rhodamine 560 and temperature-insensitive sulforhodamine 640. The resulting emissions are optically separated through filters and detected via a charged-couple device (CCD) camera system. A ratio of the two images yields temperature images independent of incident irradiance. An uncertainty in temperature of +/- 1.4 degrees C is established at the 95% confidence interval.
Robinson
G Andrew
GA
School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907, USA.
Lucht
Robert P
RP
Laurendeau
Normand M
NM