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Sensors 2009, 9(5), 3527-3548; doi:10.3390/s90503527
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Laser‐Self‐Mixing Interferometry for Mechatronics Applications

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Received: 16 March 2009 / Revised: 21 April 2009 / Accepted: 6 May 2009 / Published: 12 May 2009
(This article belongs to the Special Issue State-of-the-Art Sensors Technology in Italy)
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Abstract

We report on the development of an all-interferometric optomechatronic sensor for the detection of multi-degrees-of-freedom displacements of a remote target. The prototype system exploits the self-mixing technique and consists only of a laser head, equipped with six laser sources, and a suitably designed reflective target. The feasibility of the system was validated experimentally for both single or multi-degrees-of-freedom measurements, thus demonstrating a simple and inexpensive alternative to costly and bulky existing systems.
Keywords: physical sensors; displacement measurement; self-mixing; interferometry; mechatronics; semiconductor laser; six degrees-of-freedom physical sensors; displacement measurement; self-mixing; interferometry; mechatronics; semiconductor laser; six degrees-of-freedom
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Ottonelli, S.; Dabbicco, M.; De Lucia, F.; Di Vietro, M.; Scamarcio, G. Laser‐Self‐Mixing Interferometry for Mechatronics Applications. Sensors 2009, 9, 3527-3548.

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