NASA NTRS · 19850042313
Remote displacement measurements using a laser diode
Abstract
A technique for measuring displacements remotely to minimum distances of 8 mm with a resolution of 2 microns is described. A dynamic interferometer method is employed using a frequency-ramped laser diode. A direct measurement of the period of the resulting beat signal is used to determine the displacement.
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Beheim, G., Fritsch, K.. 1985-01-31. Remote displacement measurements using a laser diode. https://ntrs.nasa.gov/citations/19850042313
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