BRIDGMAN GROWTH OF GASE CRYSTALS FOR NONLINEAR-OPTICAL APPLICATIONS

We have grown and fabricated single crystals of gallium selenide for n onlinear optical applications in the mid-infrared wavelength region. A numerical method involving the finite volume technique was used to op timize the crystal growth furnace configuration. Crystals were grown u sing the liquid encapsulated Bridgman method in a vertical geometry. T he modified crystals grown in the optimized furnace temperature profil e showed a second harmonic conversion coefficient (d) which was higher than that of pure GaSe crystals. (C) 1997 Elsevier Science S.A.