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 language | English |
|---|---|
| Pages (from-to) | 692-695 |
| Number of pages | 4 |
| Journal | Proceedings of SPIE - the International Society for Optical Engineering |
| Volume | 4185 |
| Publication status | Published - 2000 |
| Event | 14th International Conference on Optical Fiber Sensors - Venice, Italy Duration: 11 Oct 2000 → 13 Oct 2000 |
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Cite this
Moore, A. J., McBride, R., Barton, J. S., & Jones, J. D. C. (2000). Shape measurement by active homodyne phase-stepping in a fibre optic fringe projector. Proceedings of SPIE - the International Society for Optical Engineering, 4185, 692-695.