Abstract

We directly measured phase-matching directions of second harmonic, sum, and difference frequency generations in the Langatate La3Ga5.5Ta0.5O14 (LGT) uniaxial crystal. The simultaneous fit of the data enabled us to refine the Sellmeier equations of the ordinary and extraordinary principal refractive indices over the entire transparency range of the crystal, and to calculate the phase-matching curves and efficiencies of LGT for infrared optical parametric generation.

© 2014 Optical Society of America

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