Coherence analysis of the Lau interferometer

Name: Work Video:
Duration: 3 min 30 s
Description: The Lau interferometer is a modified-coherence interferometer. A grating is used to introduce a coherence function which samples a phase object over a spatially limited region. A second grating overlaps mutually coherent points and creates a sheared image. Achromatic bias fringes may be introduced to aid interpretation.
Steven L. Cartwright; Allan J. Lightman
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