We studied the possible effects of photorefractive activity on Raman scattering in pure, Mg-doped and Fe-doped single crystals of lithium niobate. We found no evidence of such effects in pure and Mg-doped materials. We show that in Fe-doped lithium niobate the build-up of light-induced anisotropic scattering strongly affects the relative intensities of Raman lines in specific experimental geometries. These effects could be used to characterize lithium-niobate-based materials with strong photovoltaic and photorefractive activity.
Forbidden Raman Scattering in Pure and Doped Lithium Niobate / Giulotto, E., Decontardi, R., Rossella, F., Bermudez, V.. - (2003), pp. 90-95. (Photorefractive Effects, Materials, and Devices, PR 2003 fra 2003).
Forbidden Raman Scattering in Pure and Doped Lithium Niobate
Rossella F.;
2003
Abstract
We studied the possible effects of photorefractive activity on Raman scattering in pure, Mg-doped and Fe-doped single crystals of lithium niobate. We found no evidence of such effects in pure and Mg-doped materials. We show that in Fe-doped lithium niobate the build-up of light-induced anisotropic scattering strongly affects the relative intensities of Raman lines in specific experimental geometries. These effects could be used to characterize lithium-niobate-based materials with strong photovoltaic and photorefractive activity.
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