Errors in spatial phase-stepping techniques

Katherine Creath; Joanna Schmit

doi:10.1117/12.195908

12 December 1994 Errors in spatial phase-stepping techniques

Katherine Creath, Joanna Schmit

Proceedings Volume 2340, Interferometry '94: New Techniques and Analysis in Optical Measurements; (1994) https://doi.org/10.1117/12.195908
Event: International Conference on Interferometry '94, 1994, Warsaw, Poland

Abstract

Spatial phase-measurement interferometry techniques are affected by a number of sources of error. This paper focuses on the major limitations for phase calculations using standard N- point algorithms. These limitations are having the wrong carrier frequency, unequally spaced fringes, detector nonlinearities, and variations in the dc fringe intensity. Computer simulations reveal the character and magnitude of these errors.

Citation Download Citation

Katherine Creath and Joanna Schmit "Errors in spatial phase-stepping techniques", Proc. SPIE 2340, Interferometry '94: New Techniques and Analysis in Optical Measurements, (12 December 1994); https://doi.org/10.1117/12.195908

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