Title :
Remote displacement measurements using a laser diode
Author :
Beheim, G. ; Fritsch, K.
Author_Institution :
NASA Lewis Research Center, Cleveland, USA
Abstract :
A technique for measuring displacements remotely to minimum distances of 8 mm with a resolution of 2 ¿m 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.
Keywords :
displacement measurement; light interferometry; measurement by laser beam; beat signal; dynamic interferometer method; laser diode; remote displacement measurement;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19850064
