TY  - Type of reference 
TI  - Temperature measurement in semi-transparent media by transmission photothermal heterodyne imaging 
AU  - Jordan Letessier
 
AU  - Jérémie Maire
 
AU  - Stéphane Chevalier 
AB  - Measuring temperature fields in semi-transparent media requires the knowledge of optothermal properties. While current techniques are well established for isothermal thin films, they remain unexplored for thick films with temperature gradients. This study proposes to generalize current methods to thick media by combining transmittance measurement based on transmission heterodyne photothermal imaging (TPHI) and optothermal modeling. In this work, we demonstrate the validity of our model, followed by the measurements of thermotransmittance and thermoreflectance coefficients for 3 different materials. 
DO  - 10.21494/ISTE.OP.2025.1347 
JF  - Entropy: Thermodynamics – Energy – Environment – Economy  
KW  - Infrared thermography, Photothermal heterodyne imaging in transmission, Thermo-optic coefficients, Thermoreflectance, Thermoabsorbance, Modeling, Microfluidics, Thermographie infrarouge, Imagerie photothermique hétérodyne en transmission, Coefficients thermooptiques, Thermo-réflectance, Thermo-absorbance, Modélisation, Microfluidique,  
L1  - https://www.openscience.fr/IMG/pdf/iste_entropie25v6nspesft_2.pdf 
LA  - en 
PB  - ISTE OpenScience 
DA  - 2025/10/10 
SN  - 2634-1476 
TT  - Mesure de température dans des milieux semi-transparents par imagerie photothermique hétérodyne en transmission 
UR  - https://www.openscience.fr/Temperature-measurement-in-semi-transparent-media-by-transmission-photothermal 
IS  - Special Issue 
VL  - 6 
ER  -