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

A. J. Moore, R. McBride, J. S. Barton, J. D C Jones

Research output: Contribution to journalArticle

Abstract

We describe an extension of the active homodyne feedback technique in order to produce stabilized, p/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 Hz bandwidth.

Original languageEnglish
Pages (from-to)692-695
Number of pages4
JournalProceedings of SPIE - the International Society for Optical Engineering
Volume4185
Publication statusPublished - 2000
Event14th International Conference on Optical Fiber Sensors - Venice, Italy
Duration: 11 Oct 200013 Oct 2000

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