Title :
Absolute control of the scale factor in GP2 laser gyroscope: Toward a ground based detector of the lense-thirring effect
Author :
Belfi, J. ; Beverini, N. ; Calamai, Massimo ; Carelli, G. ; Maccioni, E. ; Di Virgilio, A. ; Santagata, R. ; Porzio, Alberto ; Cuccato, D. ; Ortolan, A. ; Solimeno, S.
Author_Institution :
Dept. of Phys., Univ. of Pisa, Pisa, Italy
Abstract :
The sensitivity achieved by large laser gyroscopes opens the perspective of observing in a ground laboratories very thin relativistic effect related to the Earth rotating mass (gravitomagnetic effect or Lense-Thirring effect). The required accuracy asks for a strict control of the ring cavity geometry. Here we present a control procedure that can be applied in order to solve this task.
Keywords :
gravitational lenses; gyroscopes; laser beam applications; Earth rotating mass; GP2 laser gyroscope; absolute control; gravitomagnetic effect; ground based detector; lense-thirring effect; ring cavity geometry; scale factor; Adaptive optics; Cavity resonators; Geometry; Gyroscopes; Laser stability; Mirrors; Ring lasers; Derivative free minimization; General relativity; Geodetic; Gravitomagnetism; Laser gyroscopes; Multiagent control; Optical resonators;
Conference_Titel :
European Frequency and Time Forum & International Frequency Control Symposium (EFTF/IFC), 2013 Joint
Conference_Location :
Prague
DOI :
10.1109/EFTF-IFC.2013.6702268
