Optical refractometer for complex refractive index measurement in UV-NIR range

Jerzy Plucinski; Jukka A. Raety; Eino Keranen

doi:10.1117/12.346849

30 April 1999 Optical refractometer for complex refractive index measurement in UV-NIR range

Jerzy Plucinski, Jukka A. Raety, Eino Keranen

Proceedings Volume 3730, Optoelectronic and Electronic Sensors III; (1999) https://doi.org/10.1117/12.346849
Event: Optoelectronic and Electronic Sensors III, 1998, Jurata, Poland

Abstract

An optical system for measuring the spectrum of the complex refractive index of liquids in the UV-NIR range is described. The presented optical fiber measurement method allows remote control of the index. The developed refractometer has been tested with samples from different sections of paper mill and chemical pulp mill production processes. The obtained accuracy of the real part refractive index measurements was 10^-5 with resolution 2 (DOT) 10^-6 (for the wavelength in range 300 - 920 nm with spectral resolution better than 0.5 nm). The absorption corresponding to the imaginary part of the refractive index is measured in 0 divided by 20 dB/cm range with 0.01 dB/cm resolution.

Citation Download Citation

Jerzy Plucinski, Jukka A. Raety, and Eino Keranen "Optical refractometer for complex refractive index measurement in UV-NIR range", Proc. SPIE 3730, Optoelectronic and Electronic Sensors III, (30 April 1999); https://doi.org/10.1117/12.346849

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