High-performance real-time heterodyne interferometry.

  title={High-performance real-time heterodyne interferometry.},
  author={Norbert A. Massie and Roderick D. Nelson and S{\'a}ndor Holly},
  journal={Applied optics},
  volume={18 11},
A novel system for real-time heterodyne interferometry of extended objects is demonstrated. Featured in this system is the direct measurement of the optical path difference, eliminating the sometimes troublesome interpretation of the fringe patterns of traditional interferometry. High spatial and temporal resolutions are available in real time for a properly instrumented system. The concept, its performance, and applications are presented along with results from a breadboard system, where phase… CONTINUE READING
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