Abstract: Measurements of birefringence, second-harmonic phase-matching conditions, and nonlinear coefficient d(31) are performed for a set of Hafnium-doped congruent lithium niobate ( Hf:cLN) crystals as functions of dopant concentration. The data highlight that the threshold concentration, above which there is a change in the Hf incorporation mechanism, is slightly above 2mol% and that, up to this value of concentration, the efficiency of nonlinear processes is not affected by the dopant insertion. Combining these results with those already present in literature, Hf: cLN crystals appear to be very promising candidates for the development of photorefractivity-free wavelength converters working at room temperature.
Linear and nonlinear optical properties of Hafnium-doped lithium-niobate crystals
MINZIONI, PAOLO;CRISTIANI, ILARIA;PARRAVICINI, JACOPO;DEGIORGIO, VITTORIO
2007-01-01
Abstract
Abstract: Measurements of birefringence, second-harmonic phase-matching conditions, and nonlinear coefficient d(31) are performed for a set of Hafnium-doped congruent lithium niobate ( Hf:cLN) crystals as functions of dopant concentration. The data highlight that the threshold concentration, above which there is a change in the Hf incorporation mechanism, is slightly above 2mol% and that, up to this value of concentration, the efficiency of nonlinear processes is not affected by the dopant insertion. Combining these results with those already present in literature, Hf: cLN crystals appear to be very promising candidates for the development of photorefractivity-free wavelength converters working at room temperature.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
