Acta Optica Sinica, Volume. 7, Issue 8, 760(1987)
Precision measurment of thermo-optic coefficients of optical materials——A thermo-optic coefficient measuring instrument
This paper decribles a kind of thermo-optic coefficients measuring instrument which can be used for exact measurement of five coefficients of optical materials. A new design shich combining two kinds of interferometers, computer control and data processing and adoped, resulting in a high-precision measurement. An accuracy of ± 3 × 10-7℃-1 has been achieved in measuring the thermal expansion coefficient α in a low temperature region, temperature coefficient of refractive Index β and thermo-optic coefficient of refractive Index β and tiiermo-optic coefficient ω.
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LIU HAIQING, JIN DEYUN, HUANG GOUSONG. Precision measurment of thermo-optic coefficients of optical materials——A thermo-optic coefficient measuring instrument[J]. Acta Optica Sinica, 1987, 7(8): 760