An unconventional optical diffraction technique is exploited to characterize periodically poled lithium niobate crystals grown by the off-center Czochralski technique. The method, based on maps of the diffracted intensity in the reciprocal space, pointed out that a modulation in the refractive index occurs with a periodicity close to that measured by the chemical etching procedure. In this case, therefore, the linear optical properties of domains with opposite polarization are different.
Refractive index modulation in periodically poled lithium niobate crystals
ARGIOLAS, NICOLA;BAZZAN, MARCO;SADA, CINZIA;MAZZOLDI, PAOLO;PIGOZZO, FILIPPO;CAPOBIANCO, ANTONIO DANIELE;AUTIZI, ELENA
2007
Abstract
An unconventional optical diffraction technique is exploited to characterize periodically poled lithium niobate crystals grown by the off-center Czochralski technique. The method, based on maps of the diffracted intensity in the reciprocal space, pointed out that a modulation in the refractive index occurs with a periodicity close to that measured by the chemical etching procedure. In this case, therefore, the linear optical properties of domains with opposite polarization are different.File in questo prodotto:
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