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Characterization of Surface Modifications by White Light Interferometry: Applications in Ion Sputtering, Laser Ablation, and Tribology Experiments
11:47

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Published on: February 27, 2013

White-light interferometric thickness gauge.

P A Flournoy, R W McClure, G Wyntjes

    Applied Optics
    |February 2, 2010
    PubMed
    Summary
    This summary is machine-generated.

    A novel white-light interferometric gauge offers precise microinch measurements for moving transparent films. This adaptable technology enables continuous monitoring of film thickness, coatings, and material birefringence with high accuracy.

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    Area of Science:

    • Optical Metrology
    • Materials Science
    • Industrial Instrumentation

    Background:

    • Accurate measurement of transparent film properties is crucial for quality control.
    • Existing methods may lack sensitivity or adaptability for dynamic, on-line applications.
    • Monitoring thickness and birefringence in real-time presents significant challenges.

    Purpose of the Study:

    • To develop a white-light interferometric thickness gauge with microinch sensitivity.
    • To enable on-line, continuous monitoring of transparent film characteristics.
    • To assess the gauge's adaptability for various transparent materials and properties.

    Main Methods:

    • Utilized white-light interferometry for non-contact thickness measurement.
    • Designed the gauge for on-line integration with moving transparent films.
    • Validated performance across different film types, coatings, and anisotropic materials.

    Main Results:

    • Achieved microinch sensitivity for gauging thickness variations in moving films.
    • Demonstrated the gauge's suitability for continuous on-line monitoring.
    • Confirmed robustness against variations in chemical composition, temperature, haze, and geometry.

    Conclusions:

    • The developed white-light interferometric gauge provides a sensitive and versatile solution for on-line measurement.
    • It effectively monitors transparent film thickness, coating thickness, and material birefringence.
    • The gauge's insensitivity to environmental and material variations enhances its practical applicability.