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Título

Theoretical Analysis of a New Technique for Inertial Rotation Sensing Using a Semiconductor Ring Laser

AutorPérez Serrano, Antonio ; Scirè, Alessandro
Palabras claveOptics
Laser dynamics
Metrological applications
Ring lasers
Semiconductor lasers
Fecha de publicación17-jun-2009
EditorInstitute of Electrical and Electronics Engineers
CitaciónPhotonics Technology Letters 21(13): 917-919 (2009)
ResumenWe introduce a new technique for the measurement of inertial rotations using a semiconductor ring laser. Inertial rotation introduces a frequency deviation of the optical frequency of the two counterpropagating waves in the laser cavity, whereas mode coupling causes frequency attraction (frequency pushing) and finally locking at low rotation rates, washing out the small Sagnac frequency difference to be measured. Here we propose to measure inertial rotation whitin the so-called locking band using the phase/amplitude dependence on detuning found for the oscillating modes under the gain line. The dephasing accumulated by the two counterpropagating waves unbalances the fields' amplitudes within the locking region. We analytically derive the responsivity function quantifying the two-mode power unbalance versus rotation rate, by means of a two-mode rate equations model. Noise performance of a possible rotations sensor are also discussed by calculating the noise equivalent rotation rate.
Descripción3 pages, 3 figures.-- Printed version published Jul 1, 2009.
Versión del editorhttp://dx.doi.org/10.1109/LPT.2009.2019622
URIhttp://hdl.handle.net/10261/14853
DOI10.1109/LPT.2009.2019622
ISSN1041-1135
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