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Length Measurement and Stabilisation of the Diagonals of a Square Area Laser Gyroscope by Beverini, N.; Carelli, G.; Di Virgilio, A.; Giacomelli, U.; Maccioni, E.; Stefani, F.; Belfi, J. is a scholarly article available to read on EtoBox.

What is Length Measurement and Stabilisation of the Diagonals of a Square Area Laser Gyroscope about?

Large frame ring laser gyroscopes are top sensitivity inertial sensors able to measure absolute angular rotation rate below $\rm \mathbf{prad/s}$ in few seconds. The development of ring laser based on a simple mechanical structure, usually called hetero lithic structure, requires to control the geometry of the apparatus. Our prototype GP2 is a middle size ring laser, whose main purpose is the geometry control with opto-mechanical means. The first tests have been performed, and the data analysed. The lengths of the diagonals of the ring cavity have been measured with $\pmb{\mu {\rm m}}$ accuracy, and continuous operation has been obtained, without loss of sensitivity. GP2 is located in a standard laboratory, with a temperature stabilisation around 1 degree Celsius. The analysis shows that middle size ring lasers can obtain nrad/s sensitivity also in a standard environment.

Author

Beverini, N.; Carelli, G.; Di Virgilio, A.; Giacomelli, U.; Maccioni, E.; Stefani, F.; Belfi, J.

Published

2019

Language

EN