1. Spectral interferometry method and apparatus

    Spectral interferometry method and apparatus
    A spectral interferometry apparatus and method is provided to supply unambiguous profiles (A--scans free of mirror terms) of the reflectivity versus optical path difference and make difference between the positive and negative optical path difference or provide output in a selected interval of optical path differences. The apparatus comprises object optics that transfer a beam from an optical source to a target object (55) to produce an object beam and reference optics that produce a reference beam. Displacing means (57) are provided to produce a gap (g) between the object beam (41') and the reference beam (42'). Optical spectrum dispersing ...
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