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Rotational sensitivity of the G-Pisa gyrolaser

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7 Author(s)
Belfi, J. ; Dept. of Phys. Enrico Fermi, Univ. di Pisa, Pisa, Italy ; Beverini, N. ; Bosi, F. ; Carelli, G.
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G-Pisa is an experiment investigating the possibility of operating a high-sensitivity laser gyroscope with area less than 1 m2 for improving the performances of the mirrors suspensions of the gravitational wave antenna Virgo. The experimental set-up consists of a He-Ne ring laser with a 4-mirror square cavity. The laser is pumped by an RF discharge where the RF oscillator includes the laser plasma to reach a better stability. The contrast of the Sagnac fringes is typically above 50% and a stable regime has been reached with the laser operating in either single mode or multimode. The effect of hydrogen contamination on the laser was also checked. A low-frequency sensitivity, below 1 Hz, in the range of 10-8(rad/s)/??(Hz) has been measured.

Published in:

Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on  (Volume:57 ,  Issue: 3 )

Date of Publication:

March 2010

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