A METHOD OF MEASURING A DISPLACEMENT-RELATED PARAMETER USING A LASER SELF-MIXING MEASURING SYSTEM, AND A LASER SELF-MIXING MEASURING SYSTEM

摘要

A method of measuring a displacement-related parameter using a laser self- mixing measuring system, and a laser self-mixing measuring system. The method comprises: moving a first laser emitting a first light beam onto a target; emitting, by a second laser, a second light beam onto said first laser or a support thereof, to monitor it and thus provide an output reference signal; and determining the relative motion and/or relative velocity and/or relative distance of said target, with respect to said first laser, by comparing and/or operating the interferometry signals of both lasers, or signals depending thereon. The system is capable or carrying out the method.