Dual differential interferometer

Details Dual differential interferometer Dual differential interferometer

G - Physics

01

N

73/54

G01N 21/17 (2006.01) G01H 9/00 (2006.01)

Patent

CA 1203398

ABSTRACT OF THE DISCLOSURE A dual two-beam differential interferometer that measures both the amplitude and orientation of propagating, broadband surface acoustic waves. Four beams are focused on a surface. The four reflected beams are separated into two pairs. The two pairs are detected to produce two signals that are used to compute amplitude and orientation.

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