Purification of organic nonlinear optical materials for bulk crystal growth from melt

Tesfaye Gebre; Kamala N. Bhat; Ashok K. Batra; Ravindra B. Lal; Mohan D. Aggarwal; Benjamin G. Penn; Donald O. Frazier

doi:10.1117/12.452411

25 October 2002 Purification of organic nonlinear optical materials for bulk crystal growth from melt

Tesfaye Gebre, Kamala N. Bhat, Ashok K. Batra, Ravindra B. Lal, Mohan D. Aggarwal, Benjamin G. Penn, Donald O. Frazier

Author Affiliations +

Proceedings Volume 4813, Crystal Materials for Nonlinear Optical Devices and Microgravity Science; (2002) https://doi.org/10.1117/12.452411
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

Abstract

The techniques developed for purification of nonlinear optical organic materials, such as benzil, 2-methyl-4-nitroaniline (MNA), Dicyanovinyl anisole (DIVA) and its derivatives, nitrophenyl prolinol (NPP) and other Schiff's base compounds, include Kugelrohy method, physical vapor transport, zone refining and recrystallization from the solvent are described. Purity of the materials is tested using differential thermal analysis, gas chromatograph/Mass detector, Fourier Transform Infrared spectroscopy and melting point measurements. The purified materials were later used in the growth of single crystal by Bridgman-Stockbarger and Czochralski techniques.

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Tesfaye Gebre, Kamala N. Bhat, Ashok K. Batra, Ravindra B. Lal, Mohan D. Aggarwal, Benjamin G. Penn, and Donald O. Frazier "Purification of organic nonlinear optical materials for bulk crystal growth from melt", Proc. SPIE 4813, Crystal Materials for Nonlinear Optical Devices and Microgravity Science, (25 October 2002); https://doi.org/10.1117/12.452411

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