Absolute distance measurements using FTPSI with a widely tunable IR laser

Leslie L. Deck

doi:10.1117/12.473544

19 June 2002 Absolute distance measurements using FTPSI with a widely tunable IR laser

Leslie L. Deck

Proceedings Volume 4778, Interferometry XI: Applications; (2002) https://doi.org/10.1117/12.473544
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

Abstract

Fourier transform phase-shifting interferometry is further developed and applied to the absolute measurement of interferometer cavities. Using a widely tunable IR laser diode initially developed for telecom applications along with specific interferometer cavities, I apply this new capability to the measurement of absolute cavity lengths, where a 1-(sigma) precision of 12.6 ppb is demonstrated and the technique was then used to determinate the absolute index and thickness of a transparent parallel plate.

Citation Download Citation

Leslie L. Deck "Absolute distance measurements using FTPSI with a widely tunable IR laser", Proc. SPIE 4778, Interferometry XI: Applications, (19 June 2002); https://doi.org/10.1117/12.473544

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