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Nonlinear optical material, method of manufacturing the same, and wavelength converter
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Nonlinear optical material, method of manufacturing the same, and wavelength converter
Nonlinear optical material, method of manufacturing the same, and wavelength converter
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机译：非线性光学材料，其制造方法以及波长转换器
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摘要
The invention provides a nonlinear optical material comprising a compound represented by the general formula (1). wherein R¹ denotes an electron attractive group, R² denotes a group selected from the group consisting of a hydrogen atom, methyl group, methoxy group and electron attractive group, R³ denotes a straight-chain alkylene group, and X denotes an oxygen or sulfur atom.;The invention also relates to a method of manufacturing a nonlinear optical material comprising the steps of dissolving a compound represented by the general formula (1) in an organic solvent, and evaporating said solvent while keeping its temperature constant or lowering its temperature, thereby growing a crystal of the compound represented by the general formula (1).;The nonlinear optical material of the invention possesses a molecular structure realized by linking structures having a strong electron attractive group and weak electron donative portion with straight-chain alkylene portions, and thus a nonlinear optical material having a shortened absorption edge wavelength and excellent crystallinity may be obtained.;These nonlinear optical materials can be effectively utilized as the nonlinear optical material for an optical wavelength converter.
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