Benzil: 2-methyl-4-nitroaniline binary single crystals for nonlinear optical applications

Jaeho Choi; Mohan D. Aggarwal; Wen Shan Wang; Benjamin G. Penn; Donald O. Frazier

doi:10.1117/12.351426

28 June 1999 Benzil: 2-methyl-4-nitroaniline binary single crystals for nonlinear optical applications

Jaeho Choi, Mohan D. Aggarwal, Wen Shan Wang, Benjamin G. Penn, Donald O. Frazier

Proceedings Volume 3793, Operational Characteristics and Crystal Growth of Nonlinear Optical Materials; (1999) https://doi.org/10.1117/12.351426
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

Benzil:MNA binary organic single crystals have been grown to overcome decomposition tendency and improve mechanical properties of 2-methyl-4-nitroaniline (MNA) which is known to be one of the best organic NLO material. Single crystals of binary system have grown using a transparent Bridgman- Stockbarger system which has fabricated to monitor the growth process. The growth conditions for the flat solid- liquid interface are optimized for the different dopant concentration of benzil. The melt in the self-sealing ampoule is maintained in liquid state without decomposition up to 2 weeks which allows us to grow 20 mm long single crystals. Hardness of 5wt% benzil:MNA is measured to be 13 Kg/mm² which is 45% higher than benzil. The conversion efficiency of second-harmonic generation is found to be 1.5% with 4.5 mm interaction length. Since MNA is phase-matchable material, this efficiency could be comparable to commercial KDP. Surface quality of binary crystals has maintained its initial condition in air without absorption of water vapor which may be the main cause of surface degradation.

Citation Download Citation

Jaeho Choi, Mohan D. Aggarwal, Wen Shan Wang, Benjamin G. Penn, and Donald O. Frazier "Benzil: 2-methyl-4-nitroaniline binary single crystals for nonlinear optical applications", Proc. SPIE 3793, Operational Characteristics and Crystal Growth of Nonlinear Optical Materials, (28 June 1999); https://doi.org/10.1117/12.351426

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