GRIN elements in the interference method of glass index measurement

Dmitrii K. Tagantsev; Garegin O. Karapetyan

doi:10.1117/12.255530

22 October 1996 GRIN elements in the interference method of glass index measurement

Dmitrii K. Tagantsev, Garegin O. Karapetyan

Proceedings Volume 2943, Gradient-Index Optics in Science and Engineering; (1996) https://doi.org/10.1117/12.255530
Event: Gradient-Index Optics in Science and Engineering, 1995, Kazimierz Dolny, Poland

Abstract

A new interference method for measurement of the refractive index of glass has been developed. The method is based on the Mach-Zehnder interferometry and GRIN elements are used for a scale of refractive index. Cone, pyramid or wedge elements are privileged in this method. Both the object under study and GRIN elements are placed in an oil immersion container, then oil is heated until the specimen becomes invisible. For such a situation the interference fringes produced by the GRIN standard are analyzed. The accuracy of refractive index measurements is equal to +/- 0.00001.

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Dmitrii K. Tagantsev and Garegin O. Karapetyan "GRIN elements in the interference method of glass index measurement", Proc. SPIE 2943, Gradient-Index Optics in Science and Engineering, (22 October 1996); https://doi.org/10.1117/12.255530

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