研究目的
To compare different holographic setups used in heat and mass transfer measurement and describe their properties to help in selecting the appropriate technique for specific measurements.
研究成果
The paper provides a comprehensive comparison of different holographic interferometry techniques for measuring heat and mass transfer, highlighting their unique properties and applications. It emphasizes the importance of selecting the appropriate technique based on the specific requirements of the measurement, such as sensitivity, complexity, and area size. The study also points out the potential for further development in sensitivity and measurement techniques.
研究不足
The sensitivity of the interferometer setups can be insufficient for low temperature changes, and the complexity and cost of some setups may limit their applicability. The size of the measuring area is constrained by the optical components used.
1：Experimental Design and Method Selection:
The study employs various holographic interferometry techniques, including Mach-Zehnder and Michelson interferometer setups, for measuring refractive index distribution.
2：Sample Selection and Data Sources:
The experiments involve measuring temperature fields and refractive index changes in different physical states.
3：List of Experimental Equipment and Materials:
Includes laser heads, polarizing beam splitters, spatial filters, collimating objectives, mirrors, CCD sensors, and heating cartridges.
4：Experimental Procedures and Operational Workflow:
Detailed steps involve capturing digital holograms of phase-objects in different states, numerical processing, and reconstruction of interference phase distributions.
5：Data Analysis Methods:
The analysis includes Fresnel transformation, FFT algorithm for reconstruction, and comparison of interference phase distributions to determine temperature fields.
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