Automatic laser refractometer

Yanko E. Sarov; Ivan Kostic; S. Minov; Stefan Mitkov; Georgi Minchev; L. Uher

doi:10.1117/12.519486

4 November 2003 Automatic laser refractometer

Yanko E. Sarov, Ivan Kostic, S. Minov, Stefan Mitkov, Georgi Minchev, L. Uher

Proceedings Volume 5226, 12th International School on Quantum Electronics: Laser Physics and Applications; (2003) https://doi.org/10.1117/12.519486
Event: 12th International School on Quantum Electronics Laser Physics and Applications, 2002, Varna, Bulgaria

Abstract

For all kinds of laser applications is important to know the refractive indices of materials for the corresponding wavelength. Accurately measured RI value can be used for structural analysis, in many branches of the science and industry. However, commercial refractometers usually measure refractive index at the wavelength of one lamp's discrete line. That's why investigators sometimes have to design new or to modify standard refractometers to perform adequate experiment on the desired wavelength. This work reports the design of a simple automatic laser refractometer. The method of the disappearing diffraction pattern is used for the measurements. The device uses diode laser placed in a socket, which allows easy replacement of lasers and performing measurements at different wavelengths. The apparatus can measure RI of liquids with accuracy better than 1.10^-3 in a range from 1.33 to 1.40.

Citation Download Citation

Yanko E. Sarov, Ivan Kostic, S. Minov, Stefan Mitkov, Georgi Minchev, and L. Uher "Automatic laser refractometer", Proc. SPIE 5226, 12th International School on Quantum Electronics: Laser Physics and Applications, (4 November 2003); https://doi.org/10.1117/12.519486

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