We investigated the composition dependence of photorefractivity, beam distortion, Raman lines, and birefringence in reduced pure lithium niobate. When lithium content reaches the value of 49.4 mol %, abrupt changes were observed for all these optical properties except birefringence. We suggest that such a behavior may be due to a change in the phonon spectrum occurring around the critical composition
Critical composition of reduced pure-LiNbO3 crystals: A sudden change in optical properties
MINZIONI, PAOLO;NAVA, GIOVANNI;GALINETTO, PIETRO;DEGIORGIO, VITTORIO
2011-01-01
Abstract
We investigated the composition dependence of photorefractivity, beam distortion, Raman lines, and birefringence in reduced pure lithium niobate. When lithium content reaches the value of 49.4 mol %, abrupt changes were observed for all these optical properties except birefringence. We suggest that such a behavior may be due to a change in the phonon spectrum occurring around the critical compositionFile in questo prodotto:
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