GROWTH OF LARGE METHYL-(2,4-DINITROPHENYL)-AMINOPROPANOATE - 2-METHYL-4-NITROANILINE CRYSTALS FOR NONLINEAR-OPTICAL APPLICATIONS

Large single crystals (8 x 8 x 80 mm3) of mixed methyl-(2,4-dinitrophenyl)-amino-propanoate(MAP):2-methyl-4-nitroaniline(MNA) have been grown by a novel solution crystal growth technique. In this technique, the seed crystal is pulled upward from its growth solution at a controlled rate along with a decrease in the solution temperature to create a desired supersaturation. Information about the morphology-solvent relationship of spontaneously nucleated crystals is also given. The grown crystal is of high optical quality with appropriate size for fabrication of optical devices.