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Proceedings Paper

Position measurement in standing wave interferometer for metrology of length
Author(s): Josef Lazar; Ondřej Číp; Jindřich Oulehla; Pavel Pokorný; Antonín Fejfar; Jiří Stuchlík
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Paper Abstract

We present techniques oriented to improvement of precision in incremental interferometric measurements of displacements over a limited displacement range. The wavelength of the coherent laser source is here directly stabilized to a mechanical reference and not to a reference of any optical frequency. This may represent a reduction of uncertainty linking the laser wavelength not to indirectly evaluated refractive index but to the setup mechanics which cannot be completely eliminated. Here we suggest an approach where the traditional interferometers are replaced by a passive Fabry-Perot cavity with position sensing using an intracavity transparent photodetector.

Paper Details

Date Published: 11 October 2011
PDF: 7 pages
Proc. SPIE 8306, Photonics, Devices, and Systems V, 830607 (11 October 2011);
Show Author Affiliations
Josef Lazar, Institute of Scientific Instruments (Czech Republic)
Ondřej Číp, Institute of Scientific Instruments (Czech Republic)
Jindřich Oulehla, Institute of Scientific Instruments (Czech Republic)
Pavel Pokorný, Institute of Scientific Instruments (Czech Republic)
Antonín Fejfar, Institute of Physics (Czech Republic)
Jiří Stuchlík, Institute of Physics (Czech Republic)

Published in SPIE Proceedings Vol. 8306:
Photonics, Devices, and Systems V
Pavel Tománek; Dagmar Senderáková; Petr Páta, Editor(s)

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