The use of erbium fiber laser relaxation
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H. Arellano-Sotelo; Yu.O. Barmenkov; A.V. Kir'yanov
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Article
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2008
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John Wiley and Sons
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English
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We report a novel-principle fiber-laser intra-cavity sensor for measuring refractive index and solute concentration of aqueous solutions. The sensor operation is based on a variation of the laser oscillation relaxation frequency (the measured parameter), sensitive to the intra-cavity loss change. Th