He-Ne ring lasers are, actually, the most sensitive devices for inertial rotation measurements. Depending on their linear dimensions, they find applications in different fields: from inertial navigation to structural engineering, from metrology to geophysics and fundamental physics [1,2]. Here we report the recent progresses toward the development of GINGER- Gyroscopes IN GEneral Relativity [3], a triaxial ultra-sensitive ring laser gyroscope whose primary target is a ground measurement the Lense-Thirring effect, a small shift of the Earth rotation rate foreseen by Einstein's General Relativity. This target implies a measurement of the Earth rotation rate with a sensitivity better than one part over 1010 and so requires a high level of stability and accuracy of the laser array and of the gyroscope stability. The main part of the research activity presented in this paper involves, then, a strict control of the systematic errors related to the fluctuation of the optical cavity geometry and of the laser parameters.

Toward the "perfect square" ring laser gyroscope 2014 Fotonica AEIT Italian Conference on Photonics Technologies

BEVERINI, NICOLO';CARELLI, GIORGIO;MACCIONI, ENRICO;BELFI, JACOPO;
2014-01-01

Abstract

He-Ne ring lasers are, actually, the most sensitive devices for inertial rotation measurements. Depending on their linear dimensions, they find applications in different fields: from inertial navigation to structural engineering, from metrology to geophysics and fundamental physics [1,2]. Here we report the recent progresses toward the development of GINGER- Gyroscopes IN GEneral Relativity [3], a triaxial ultra-sensitive ring laser gyroscope whose primary target is a ground measurement the Lense-Thirring effect, a small shift of the Earth rotation rate foreseen by Einstein's General Relativity. This target implies a measurement of the Earth rotation rate with a sensitivity better than one part over 1010 and so requires a high level of stability and accuracy of the laser array and of the gyroscope stability. The main part of the research activity presented in this paper involves, then, a strict control of the systematic errors related to the fluctuation of the optical cavity geometry and of the laser parameters.
2014
978-8-8872-3717-7
978-8-8872-3718-4
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/645672
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