Single beam laser surface velocity and displacement measurement

Details Single beam laser surface velocity and displacement measurement Single beam laser surface velocity and displacement measurement

1998-03-20

1999-12-28

Buczinski, Stephen C.

Optics: measuring and testing

Velocity or velocity/height measuring

With light detector

356356, 73597, 73601, G01B 902

Patent

active

060088877

ABSTRACT:
Single-beam laser apparatus for measuring surface velocity at acoustic frequencies and surface displacement at ultrasonic frequencies includes a source laser and optics for directing a single laser beam at normal incidence to a surface. A photo EMF detector and optics are provided for directing surface reflected laser beam at the photo EMF detector in order to provide outputs therefrom which are directly proportional to all three orthogonal components surface velocity or displacement.

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