Linear and Nonlinear Optical Properties Of Racemic (±)2-(α-Methylbenzylamino)-5-Nitropyridine Single Crystals |
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| Authors: | Takashi Kondo Fumiaki Akase Masashi Kumagai Ryochi Ito |
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| Affiliation: | (1) Department of Applied Physics, Faculty of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113, Japan;(2) Materials Development Research Laboratories, Japan Energy Co., Ltd., 3-17-35 Niizo-Minami, Toda, Saitama 335, Japan |
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| Abstract: | Linear and nonlinear optical properties of racemic (±)2-(α-methylbenzylamino)-5-nitropyridine ((±)MBANP) single crystals have been comprehensively investigated and compared with those of the enantiomorph (–)2-(α-methylbenzylamino)-5-nitropyridine ((–)MBANP) crystals. (±)MBANP crystal exhibits very high chemical and physical stability, but relatively small nonlinear optical coefficients (d31 = 6.8 pm/V, d32 = 4.7 pm/V, d33 = 0.84 pm/V). A comparison between the nonlinear optical coefficients of (±)MBANP and (–)MBANP demonstrates the validity of the oriented-gas model in molecular crystals that neglects all the contributions from intermolecular interaction. |
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| Keywords: | organic crystal racemic form second-harmonic generation refractive index nonlinear optical coefficient crystal structure oriented-gas model |
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