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2 March 2022 Measurements of the optical and thermal properties in layered biomaterials by monitoring of a thermal perturbation with phase-resolved optical coherence tomography
David Veysset, Yueming Zhuo, Tong Ling, Vimal P Pandiyan, Ramkumar Sabesan, Daniel Palanker
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Proceedings Volume PC11970, Quantitative Phase Imaging VIII; PC1197006 (2022) https://doi.org/10.1117/12.2610247
Event: SPIE BiOS, 2022, San Francisco, California, United States
Abstract
We present a methodology that allows precise determination of the optical and thermal properties of layered materials using thermal perturbation and phase-resolved optical coherence tomography (pOCT). Following heating with a laser pulse of a buried absorbing layer, optical path length changes between the sample’s surface and the absorbing layer are monitored using a line-scan pOCT. Using an axisymmetric thermo-mechanical model for transversely uniform multi-layered media, we fit the absorption coefficient, the heat conductivity, and the thermal expansion coefficient of the polymer. We demonstrate that the temperature distribution can be determined with a precision under 0.1°C, after a single laser pulse.
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David Veysset, Yueming Zhuo, Tong Ling, Vimal P Pandiyan, Ramkumar Sabesan, and Daniel Palanker "Measurements of the optical and thermal properties in layered biomaterials by monitoring of a thermal perturbation with phase-resolved optical coherence tomography", Proc. SPIE PC11970, Quantitative Phase Imaging VIII, PC1197006 (2 March 2022); https://doi.org/10.1117/12.2610247
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KEYWORDS
Optical coherence tomography
Thermography
Optical testing
Finite element methods
Absorption
Partial differential equations
Polymers
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