Optical spectroscopy of trivalent chromium in sol-gel lithium niobate
Abstract
We report on the characterization of sol-gel derived lithium niobate via trivalent chromium probe ions, a study that is motivated by recent reports on the synthesis of high quality sol-gel lithium niobate (LiNbO3). In order to assess the quality of sol-gel derived LiNbO3, we incorporate Cr3+ during the hydrolysis stage of the sol-gel process. A comparison of the Cr3+ emission and photo-excitation data on both sol-gel and melt-grown LiNbO3 shows that the sol-gel derived material is highly stoichiometric.
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