NASA NTRS · 19650000159
Interferometer combines laser light source and digital counting system
Abstract
Measurement of small linear displacements in digital readouts with extreme accuracy and sensitivity is achieved by an interferometer. The instrument combines a digital electro-optical fringe-counting system and a laser light source.
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1965-06-01. Interferometer combines laser light source and digital counting system. https://ntrs.nasa.gov/citations/19650000159
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