Cat's-eye retroreflector attached to motor driven lead screw allows low-frequency changes in optical path. Moving-coil actuator attached to other retroreflector allows mid-frequency movements. High-frequency movements are achieved by employing piezoelectric transducer attached to secondary mirror of same retroreflector.
Improved interferometer beam splitter
NASA Tech Briefs ; 1 , 1
1976-03-01
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Englisch
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