7 April 2004 Heat flux sensor based on photothermal beam deflection for thermal characterization of liquids
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Abstract
We propose and study a novel optoelectronic device for thermal characterization of materials. It is based on monitoring the photothermal deflection of a laser beam within a slab of a thermo-optic material in thermal contact with the material under study. An optical angle sensor is used to measure the laser deflection providing a simple and compact experimental arrangement. We demonstrate the principle of operation of the sensor and simple procedure that can be used to measure thermal effusivity of liquids. The proposed device could be implemented into a compact sensor head for remote measurements using electrical and fiber optic links.
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G. E. Sandoval-Romero, G. E. Sandoval-Romero, J. Hernandez-Cedillo, J. Hernandez-Cedillo, E. A. Martinez-Gomez, E. A. Martinez-Gomez, Augusto Garcia-Valenzuela, Augusto Garcia-Valenzuela, C. Sanchez-Perez, C. Sanchez-Perez, Juan Hernandez-Cordero, Juan Hernandez-Cordero, } "Heat flux sensor based on photothermal beam deflection for thermal characterization of liquids", Proc. SPIE 5478, Laser Optics 2003: Solid State Lasers and Nonlinear Frequency Conversion, (7 April 2004); doi: 10.1117/12.560994; https://doi.org/10.1117/12.560994
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