New interferometric method for piezoelectric measurements
- 1 September 1975
- journal article
- conference paper
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 46 (9) , 1167-1170
- https://doi.org/10.1063/1.1134436
Abstract
A new interferometric technique has been developed for measuring the amplitude of very small ac displacements. The technique, utilizing a spherical Fabry–Perot interferometer, is more sensitive and less susceptible to acoustic vibrations than previous methods. We have used this technique to measure displacements as small as 4×10−4 Å, and the theoretical sensitivity in a well‐isolated environment is about 10−5 Å.Keywords
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