1-arm phase optical bridge with axial symmetry (with interference Newton fringes) for measuring small periodic displacements
- 9 August 1973
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 9 (16) , 355-357
- https://doi.org/10.1049/el:19730262
Abstract
A 1-arm phase optical bridge with axial symmetry (with interference Newton fringes) is developed for the measurement of small periodic displacements of acoustic frequency. Using the synchronous detection method, a vibration with an amplitude as small as 3×10−14 m is measured.Keywords
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