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Absolute distance measurements using FTPSI with a widely tunable IR laser
- Source :
- Interferometry XI: Applications.
- Publication Year :
- 2002
- Publisher :
- SPIE, 2002.
-
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- σ 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.
Details
- ISSN :
- 0277786X
- Database :
- OpenAIRE
- Journal :
- Interferometry XI: Applications
- Accession number :
- edsair.doi...........5e6ae548ac1e4fd62a03a26175241bd5