Raman Spectral of Ce/Mn Co-Doped LiNbO₃ Crystal

Abstract:

Ce:Mn:LiNbO₃ single crystals with different [L/[N were used for the measurement of Raman spectrum. Each peak appeared in the Raman spectrum was ascribed to the basic vibration modes of the LiNbO₃ crystal according to the basic analysis and the achievements obtained by the earlier researches. The results showed that the peak width at half height (FWHM) of the A₁(TO₁) vibration mode become wide gradually with the increase of the [L/[N. However, the FWHM of A₁(TO₂) and A₁(TO₄) vibration mode decrease with the increase of the [L/[N in the crystal. The FWHM of the E(TO₁) vibration mode was decrease with the increase of [L/[N in the crystal, and also the linear relationship between the FWHM of the E(TO₁) vibration mode and the [L/[N in the crystal. According to the relationship between the [L/[N in the crystal and the FWHM of the E(TO₁) vibration mode for the pure LiNbO₃ crystal, the quantitative relation for the Ce/Mn co-doped LiNbO₃ crystal was revealed by amending the empirical formula for pure LiNbO₃ crystal on the basis of the results measured by ICP-AES. The quantitative relation of the FWHM of the E(TO₁) vibration mode and the [L/[N was given by the Polynomial Fit of the experimental data.

• Periodical: Applied Mechanics and Materials (Volumes 395-396)
• Pages: 33-36
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.395-396.33
• Online since: September 2013
• Authors: Miao Wang, Yun Long Wang, Rui Wang
• Keywords: Lithium Niobate, Quantitative Relation, Raman Spectrum

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