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Single-frequency external-cavity semiconductor ring-laser gyroscope

Augustin Mignot, Gilles Feugnet, Sylvain Schwartz, Isabelle Sagnes, Arnaud Garnache, Claude Fabre, and Jean-Paul Pocholle

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Abstract

We report for the first time (to our knowledge) the experimental achievement of a single-frequency ring-laser gyroscope using a diode-pumped half-vertical-cavity semiconductor-emitting laser structure as a gain medium. Thanks to the control of mode competition by an active feedback loop, we observe a beat signal from recombined beams that has a frequency proportional to the rotation rate as predicted by the Sagnac effect. This promising result opens new perspectives for rotation sensing.

© 2008 Optical Society of America

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