Investigation of frequency-domain lifetime imaging technique (FLIM-PSP/TSP) in DLR

Abstract

Last several years, the applicability of frequency-domain fluorescence lifetime imaging (FLIM) with a newly developed CMOS camera sensor (pco.flim) to Pressure- and Temperature-Sensitive Paint (PSP/TSP) measurements has been investigated by DLR in collaboration with Kumamoto University and Tohoku University. The investigations were widely conducted such as a preliminary camera and LED operation check, parametric study in the calibration chamber, camera calibration, demonstration test with an impinging jet to a PSP coated plate, low-speed and transonic wind tunnel tests. This oral presentation introduces the principle part of the FLIM technique and the overview of our collaborative works.