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Proceedings Paper

Absolute method for an optical measurement of the earth gravitational axis: application to Watt balance
Author(s): Karim Ouedraogo; Suat Topsu; Luc Chassagne; Patrick Juncar; Jamil Nasser; Yasser Alayli
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Paper Abstract

We show how a Fabry Perot interferometer could be used to determine the gravitational axis of the earth g with an high sensitivity. Our method lie g axis to an optical beat frequency value between two lasers. The principle is described and a budget error is presented. The sensitivity of the sensor is estimated to be below of 85 nrad/MHz. This method could be used as a high sensitivity and absolute tilt sensor or even as a seismometer. This sensor is dedicated to the french watt balance project as described in this paper.

Paper Details

Date Published: 16 May 2007
PDF: 8 pages
Proc. SPIE 6585, Optical Sensing Technology and Applications, 65852G (16 May 2007);
Show Author Affiliations
Karim Ouedraogo, Univ. of Versailles Saint-Quentin (France)
Suat Topsu, Univ. of Versailles Saint-Quentin (France)
Luc Chassagne, Univ. of Versailles Saint-Quentin (France)
Patrick Juncar, LNE-INM (France)
Jamil Nasser, Univ. of Versailles Saint-Quentin (France)
Yasser Alayli, Univ. of Versailles Saint-Quentin (France)

Published in SPIE Proceedings Vol. 6585:
Optical Sensing Technology and Applications
Francesco Baldini; Jiri Homola; Robert A. Lieberman; Miroslav Miler, Editor(s)

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