Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5443099 | Optical Materials | 2016 | 4 Pages |
Abstract
The dependence of the Verdet constant on temperature in the (80-300 Ð) range for a promising magneto-active material terbium sesquioxide Tb2O3 at the wavelengths of 405-1064 nm is considered. For each of the studied wavelengths, the Verdet constant of the material cooled down to the liquid nitrogen temperature increased by more than a factor of 3.2 as compared to the room temperature value. Similarly to the other paramagnetics, the increase follows the law â¼1/T. Approximations for the temperature dependence of the Verdet constant have been obtained and the value of 1/V·(dV/dT) has been estimated. This information is needed to determine the angle of rotation as well as the variation of the extinction ratio of a Faraday isolator with temperature and extremely important at creation a cryogenic Faraday devices.
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Physical Sciences and Engineering
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Authors
I.L. Snetkov, O.V. Palashov,