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Proceedings Paper

Automatic laser refractometer
Author(s): Yanko E. Sarov; Ivan Kostic; S. Minov; Stefan Mitkov; Georgi Minchev; L. Uher
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Paper 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.

Paper Details

Date Published: 4 November 2003
PDF: 5 pages
Proc. SPIE 5226, 12th International School on Quantum Electronics: Laser Physics and Applications, (4 November 2003); doi: 10.1117/12.519486
Show Author Affiliations
Yanko E. Sarov, Central Lab. of Optical Storage and Processing of Information (Bulgaria)
Ivan Kostic, Institute of Informatics (Slovak Republic)
S. Minov, Central Lab. of Optical Storage and Processing of Information (Bulgaria)
Stefan Mitkov, Central Lab. of Optical Storage and Processing of Information (Bulgaria)
Georgi Minchev, Central Lab. of Optical Storage and Processing of Information (Bulgaria)
L. Uher, Institute of Technical Cybernetics (Slovak Republic)


Published in SPIE Proceedings Vol. 5226:
12th International School on Quantum Electronics: Laser Physics and Applications
Peter A. Atanasov; Alexander A. Serafetinides; Ivan N. Kolev, Editor(s)

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