A dilatometer measuring system based on heterodyne laser interferometry is described. An electrooptical light modulator based on the double transverse Pockels electrooptical effect in a crystal of lithium niobate and operating in the quarter-wave mode is used as the optical heterodyne. The electronic measuring system uses modern microelectronic components with a high degree of integration.
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Translated from Izmerital’naya Tekhnika, No. 12, pp. 27–32, December, 2009.
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Kulesh, V.P., Moskalik, L.M. & Sharov, A.A. A heterodyne laser interferometer for dilatometer measurements. Meas Tech 52, 1319–1327 (2009). https://doi.org/10.1007/s11018-010-9440-y
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DOI: https://doi.org/10.1007/s11018-010-9440-y