Shape measurement by active homodyne phase-stepping in a fibre optic fringe projector

A. J. Moore

doi:10.1117/12.2302263

9 November 2000 Shape measurement by active homodyne phase-stepping in a fibre optic fringe projector

A. J. Moore

Proceedings Volume 4185, Fourteenth International Conference on Optical Fiber Sensors; 41853C (2000) https://doi.org/10.1117/12.2302263
Event: Fourteenth International Conference on Optical Fiber Sensors, 2000, Venice, Italy

Abstract

We describe an extension of the active homodyne feedback technique in order to produce stabilised, π/2 radian phase steps in a full-field interferometer used to project interference fringes onto a test-object and hence to measure its shape. The phase stability and accuracy of each step was measured to be 17 milliradians in a 50 Hzbandwidth.

Citation Download Citation

A. J. Moore "Shape measurement by active homodyne phase-stepping in a fibre optic fringe projector", Proc. SPIE 4185, Fourteenth International Conference on Optical Fiber Sensors, 41853C (9 November 2000); https://doi.org/10.1117/12.2302263

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