Interferometer using a laser pointer for remote microdisplacement measurements |
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| Authors: | Zhong Ming Ming Low Gin Hin Gopal M Hegde |
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| Affiliation: | (1) Electronic and Communication Engineering Division, Ngee Ann Polytechnic, 599489, Singapore |
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| Abstract: | A portable Michelson interferometer for remote optical sensing with imaging capability is developed based on a laser pointer
and experimentally studied. The setup has an open sensing arm with a mirror that can be attached to any object for the measurement
of responses such as microdisplacement, strain, stress, and temperature. A mirror in the reference arm is mounted on an encoded
stepper motor, which can operate under remote control via Web/Internet for reset and calibration. Remote microdisplacement
measurements precise to within 5 μm have been performed. |
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