Absolute method for an optical measurement of the earth gravitational axis: application to Watt balance

Karim Ouedraogo; Suat Topsu; Luc Chassagne; Patrick Juncar; Jamil Nasser; Yasser Alayli

doi:10.1117/12.722737

16 May 2007 Absolute method for an optical measurement of the earth gravitational axis: application to Watt balance

Karim Ouedraogo, Suat Topsu, Luc Chassagne, Patrick Juncar, Jamil Nasser, Yasser Alayli

Proceedings Volume 6585, Optical Sensing Technology and Applications; 65852G (2007) https://doi.org/10.1117/12.722737
Event: International Congress on Optics and Optoelectronics, 2007, Prague, Czech Republic

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.

Citation Download Citation

Karim Ouedraogo, Suat Topsu, Luc Chassagne, Patrick Juncar, Jamil Nasser, and Yasser Alayli "Absolute method for an optical measurement of the earth gravitational axis: application to Watt balance", Proc. SPIE 6585, Optical Sensing Technology and Applications, 65852G (16 May 2007); https://doi.org/10.1117/12.722737

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