Original title: Fabry-Perot displacement interferometry in air
Authors: Šmíd, Radek ; Durand, M. ; Wang, Y. ; Lawall, J.
Document type: Papers
Conference/Event: LASER53, Třešť (CZ), 2013-10-30 / 2013-11-01
Year: 2013
Language: eng
Abstract: In earlier work, we have demonstrated the use of Fabry-Perot interferometry to measure displacements of up to 50 mm with a fractional accuracy of 4 x 10-10 in vacuum. The initial work was done at a wavelength of 633 nm, and the more recent work was done at 1560 nm. We now seek to extend the approach to displacement measurements in air. A well-known approach to compensate for the refractive index of air without relying on independent measurements of the temperature and pressure is to use two wavelengths. In this work, we supplement our implementation at 1560 nm with an additional laser at 1064 nm in order to control for the dispersion of air.
Keywords: Fabry-Perot; instrumentation; interferometry; measurement and technology; metrology
Project no.: GPP102/12/P962 (CEP), ED0017/01/01
Funding provider: GA ČR, GA MŠk
Host item entry: Sborník příspěvků multioborové konference LASER53, ISBN 978-80-87441-10-7

Institution: Institute of Scientific Instruments AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0227786

Permalink: http://www.nusl.cz/ntk/nusl-166221


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