STP666

    Heterodyne Interferometry

    Published: Jan 1978


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    Abstract

    Heterodyne interferometry is a technique for measuring directly the optical path difference between two wavefronts. In contrast to traditional interferometry, there are no fringe maps to reduce. Other features of the technique include a phase accuracy of better than λ/100, high spatial resolution, and application to dynamic optical phenomena.

    Keywords:

    interferograms, heterodyne interferometry, optical phase measurement


    Author Information:

    Massie, NA
    Technical staff member, Rockwell International, Canoga Park, Calif.


    Paper ID: STP33976S

    Committee/Subcommittee: F01.02

    DOI: 10.1520/STP33976S


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