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Proceedings Paper

Diode laser refractometer for the visible-IR region
Author(s): Yanko E. Sarov; Simeon C. Sainov
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Paper Abstract

For all kinds of laser applications it's important to know the refractive indices of materials for the corresponding wavelength. However, most commercial refractometers are equipped with sodium lamp and measure refractive index for a wavelength λ = 589.3 nm. Lack of refractometric data and laser refractometers becomes more grave problem outside the visible region, especially in IR, interesting because of the fast development of fiber and biomedical optics and telecommunications. In this work visible-IR refractometric measurements are performed with a simple diode laser microrefractometer. The device is based on the method of the disappearing diffraction pattern. The refractometer consists of a simple rotary table (1 arcmin resolution), total internal reflection prism, diffraction grating and set of diode lasers, emitting in the red (633 nm) and near IR (796 and 840 nm) region. Results are presented for a set of liquids and are compared with the corresponding values from the literature. The experimental error is estimated of 5.10-4.

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: 10.1117/12.519485
Show Author Affiliations
Yanko E. Sarov, Central Lab. of Optical Storage and Processing of Information (Bulgaria)
Simeon C. Sainov, Central Lab. of Optical Storage and Processing of Information (Bulgaria)


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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