Characterizing the Thermal Properties of Solid Materials with Weakly Absorption by the Transient Thermal Grating Method

Xiao Dong Xu; X.J. Liu

doi:10.4028/www.scientific.net/KEM.381-382.259

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A Study on Surface Material Measures for Areal Surface Texture Measuring Instruments: Measuring Conditions for the Areal Profiling
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Laser Diode Self-Mixing Interference Based on Phase Measurement Method
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A Novel Laser Feedback Interferometer for Metrology of Large Range Displacement
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Eliminate of the Nonlinearity in Heterodyne Interferometer
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Characterizing the Thermal Properties of Solid Materials with Weakly Absorption by the Transient Thermal Grating Method
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Aspheric Surface Testing Using a Partial Compensation Lens
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New Approach to Fringe Pattern Analysis Obtained by Scanning Polished Metal Cylinders with Gaussian Beam
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Theoretical Study on Self-Calibration for the Wide-Range Laser Auto-Collimation Method
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Study on the Phase Unwrapping Method with Colored Encoded Grating Pattern in 3-Dimension Profile Measurement
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HomeKey Engineering MaterialsKey Engineering Materials Vols. 381-382Characterizing the Thermal Properties of Solid...

Characterizing the Thermal Properties of Solid Materials with Weakly Absorption by the Transient Thermal Grating Method

Abstract:

In this paper, a perpendicularly overlapped transient thermal grating (TTG) method is proposed to characterize the weakly absorptive or poorly reflective materials. Based on the Kirchhoff’s law and thermal elastic theory, the theoretical distribution of the diffraction light in space, which modulated by the overlapped TTG method and TTG method, have been given. As the simulation results shows, the diffraction ability of the perpendicularly overlapped TTG is much better than that of the TTG method, and much suitable to characterize the thermal properties of opaque sample with weak absorptivity or poor reflectivity.