Improving the temperature uncertainty of $$ {\text{Mg}}_{4} {\text{FGeO}}_{6} {\text{:Mn}}^{{4 + }} $$ ratio-based phosphor thermometry by using a multi-objective optimization procedure

Parametric study of intensity-ratio-based phosphor thermometry using Mg4FGeO6:Mn4+ for instantaneous temperature measurement

“…Lifetime-based methods record the intensity during phosphorescence decay under pulse excitation, and the lifetime value is obtained by fitting the decay curve with respect to the temperature [13][14][15][16][17][18]. Intensityratio-based methods typically record the integrated intensities of two emission bands on the phosphorescence spectrum, and the intensity ratio is calculated to correspond to the temperature [19][20][21]. Fuhrmann et al [22] systematically compared the performances of lifetime-based and intensity-ratio-based methods using phosphor Mg 4 FGeO 6 :Mn 4+ (MFG).…”

“…Sutton et al [20] evaluated the performance of these methods for engineering alloys undergoing heat treatment at temperatures up to 1023 K and compared the results with those obtained using a thermocouple and thermal imager system. Petit et al [21] used a multi-objective optimization strategy to determine the filter parameters for the two emission bands of MFG, which helped decrease the temperature errors. Lechner et al [23] proposed a full spectrum fitting method to minimize the laser fluence effects on the temperature measurement, which is of importance in harsh environments with strong light absorption.…”

Automated phosphor thermometry lifetime calibration of multiple phosphors and emission lines to above 1900 K

“…The most frequently used methods include the lifetime method and the intensity ratio [1,2]. Although the uncertainty of intensity ratio measurements has reduced in recent studies [3,4], the lifetime method is used here due to its superior ability to measure higher temperatures [5,6]. In lifetime phosphor thermometry * Author to whom any correspondence should be addressed.…”