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Proceedings Paper

Benzil: 2-methyl-4-nitroaniline binary single crystals for nonlinear optical applications
Author(s): Jaeho Choi; Mohan D. Aggarwal; Wen Shan Wang; Benjamin G. Penn; Donald O. Frazier
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Paper 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.

Paper Details

Date Published: 28 June 1999
PDF: 9 pages
Proc. SPIE 3793, Operational Characteristics and Crystal Growth of Nonlinear Optical Materials, (28 June 1999); doi: 10.1117/12.351426
Show Author Affiliations
Jaeho Choi, Alabama A&M Univ. (United States)
Mohan D. Aggarwal, Alabama A&M Univ. (United States)
Wen Shan Wang, Alabama A&M Univ. (United States)
Benjamin G. Penn, NASA Marshall Space Flight Ctr. (United States)
Donald O. Frazier, NASA Marshall Space Flight Ctr. (United States)

Published in SPIE Proceedings Vol. 3793:
Operational Characteristics and Crystal Growth of Nonlinear Optical Materials
Ravindra B. Lal; Donald O. Frazier, Editor(s)

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