Growth and optical properties of Na3Gd2(BO3)3 crystal

A Na3Gd2(BO3)(3) (NGBO) crystal with dimensions of 25 x 15 x 10 mm(3) has been successfully grown by the top-seeded solution growth method with a [0 1 1] orientation seed at the molar ratio of NGBO:NaBO2:NaF= 1:2:1. Transmission spectrum shows that NGBO is optically transparent in a wide range from 320 nm to 3000 nm. The refractive indices were accurately measured by the minimum deviation method at twelve different wavelengths from 0.363 to 2.325 mu m and the Sellmeier equations constructed. The nonlinear optical coefficients were determined with the Maker fringe technique, which gave results of d(31) = 2.35 pm/V, d(32) = 0.51 pm/V, d(33) = 1.33 pm/V. Crown Copyright (C) 2012 Published by Elsevier B.V. All rights reserved.