Measurement of optical material absorption coefficients

Galyna A. Petrovska; Igor V. Demkovych; Yaroslav V. Bobitski; Mary M. Togan; Ruslana I. Pashkevych

doi:10.1117/12.407662

27 November 2000 Measurement of optical material absorption coefficients

Galyna A. Petrovska, Igor V. Demkovych, Yaroslav V. Bobitski, Mary M. Togan, Ruslana I. Pashkevych

Proceedings Volume 4316, International Conference on Lasers for Measurements and Information Transfer; (2000) https://doi.org/10.1117/12.407662
Event: International Conference on Lasers for Measurements and Information Transfer, 2000, St. Petersburg, Russian Federation

Abstract

The proposed technique is targeted at high accuracy measurement of absorbing ability of optical materials with use of laser interferometer calorimetry. The mathematical model of estimating of thermal fields, which arise in a sample at partial absorption of powerful laser radiation, allows us to divide influence of coefficients of superficial and volumetric absorption. Using the high capacity CO-laser for material heating makes it possible to reach measurement sensitivity of (10^-3 divided by 10^-7) cm^-1 of measuring of absorption coefficients of optically transparent materials. The separation of superficial and volumetric absorption allows to test quality of processing of optical elements, and thus, to predict beam durability of materials, avoiding to their physical destruction.

Citation Download Citation

Galyna A. Petrovska, Igor V. Demkovych, Yaroslav V. Bobitski, Mary M. Togan, and Ruslana I. Pashkevych "Measurement of optical material absorption coefficients", Proc. SPIE 4316, International Conference on Lasers for Measurements and Information Transfer, (27 November 2000); https://doi.org/10.1117/12.407662

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