10 September 2009 Dual mode interferometer for measuring dynamic displacement of specular and diffuse components
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We present a dual mode interferometer system based on a single-frame phase acquisition sensor that is capable of measuring the dynamic displacement of both specular and diffuse components. The single frame acquisition allows the interferometer to freeze the motions of the test articles in both configurations and examine the dynamic nature of the surface figure under dynamic stress. The system has applications in the testing of dynamic optical components such as deformable mirrors as well as defect detection and structural stability of composite materials. This paper will provide an overview of the interferometer design, outline the different measurement configurations and present measurement results of dynamically excited test articles.
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Michael North Morris, Tim Horner, Markar Naradikian, and Joe Shiefman "Dual mode interferometer for measuring dynamic displacement of specular and diffuse components", Proc. SPIE 7432, Optical Inspection and Metrology for Non-Optics Industries, 74320W (10 September 2009); doi: 10.1117/12.827090; https://doi.org/10.1117/12.827090


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