Abstract
Light beam transmittances were measured in paratellurite (TeO2) single crystals from Russian manufacturers for the spectral range of cold atom frequency standards (400–1000 nm). Oblique incidence of the light beams was used to avoid beam overlap and interference at the photodetector. A technique for monitoring and correcting photodetector nonlinearity during transmittance measurements was proposed and applied. Light attenuation (extinction) coefficients were calculated from the transmittances. The results for different crystals are similar and depend weakly on light polarization. In the studied spectral range, the Rayleigh scattering coefficient is either smaller than the absorption coefficient, or their values are comparable.
Keywords
transmittance, attenuation (extinction), absorption, and scattering coefficients; beam interference; photodetector nonlinearity; Rayleigh scattering
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For citation
Epikhin V.M., Kudryan A.V. Measurement of light transmission in monocrystalline paratellurite (TeO2). Almanac of Modern Metrology. 2026; 46 (2): 176–186.
Financing
The authors declare that no grants or other external sources of funding were used to conduct the research reported in this article.
Contribution of the authors
V.M. Epikhin: supervision, obtaining experimental results, writing the article; A.V. Kudryan: participation in measurements, presentation of results.
Conflict of interest
The authors declare that they have no conflict of interest related to the research presented in this article.
This work is licensed under a Creative Commons Attribution 4.0 License (CC BY 4.0)
©
Viacheslav M. Epikhin, Alexandr V. Kudryan, 2026
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