Frequency-modulation continuous-wave (FMCW) interferometry for thermal-expansion coefficient measurements

Rafael A. Escalona Z.; Carlos Rosi

doi:10.1117/12.231109

5 February 1996 Frequency-modulation continuous-wave (FMCW) interferometry for thermal-expansion coefficient measurements

Rafael A. Escalona Z., Carlos Rosi

Author Affiliations +

Proceedings Volume 2730, Second Iberoamerican Meeting on Optics; (1996) https://doi.org/10.1117/12.231109
Event: Second Iberoamerican Meeting on Optics, 1995, Guanajuato, Mexico

Abstract

The frequency-modulation continuous wave (FMCW) interferometry is used in combination with a reference technique by measuring the linear thermal expansion coefficients in metallic bars. Unlike other methods, the technique shown provides results in real time with a very good accuracy, and fulfills the requirements of absolute distance and displacement measurement. First results yield uncertainties of about 50 microns over a 0.1 - 10 cm dynamic range.

Citation Download Citation

Rafael A. Escalona Z. and Carlos Rosi "Frequency-modulation continuous-wave (FMCW) interferometry for thermal-expansion coefficient measurements", Proc. SPIE 2730, Second Iberoamerican Meeting on Optics, (5 February 1996); https://doi.org/10.1117/12.231109

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