13 October 1997 Growth method, optical properties, and application of organic nonlinear optical crystal 2-adamantylamino-5-nitropyridine
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Organic second-order nonlinear optical crystals are expected to be more useful than inorganic crystals such as LiNbO3 or KTiOPO4 (KTP) because oftheir larger nonlinear susceptibility (2))• A long interaction length in the phase-matched direction is required to obtain devices with high wavelength conversion efficiency. We have devised an indirect laser-heated pedestal growth (ILHPG) method in which the growth direction oforganic crystal can be controlled. We have successfully applied the method to grow organic nonlinear optical crystal 2-adamanthylamino-5-nitropyridine(AANP). The grown AANP has been characterized in terms ofits linear and nonlinear optical properties. The results show that Type II angle-tuned phasematched wavelength conversions, such as second harmonic generation (SHG) and optical parametric generation (OPG), are possible in the wavelength region from 1.2 to 1.7 tim. This means, it is possible for AANP to provide Type II angle-tuned phase-matched wavelength conversion with high efficiency foroptical communications systems. As an example, the AANP was applied for optical sampling measurements. In addition, reducing absorption in the AANP crystal by using a deuterated denvertive ofAANP increases the SHG efficiency at 1.55 .tm.
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Atsushi Yokoo, Atsushi Yokoo, Itaru Yokohama, Itaru Yokohama, Hidehiko Takara, Hidehiko Takara, Toshikuni Kaino, Toshikuni Kaino, } "Growth method, optical properties, and application of organic nonlinear optical crystal 2-adamantylamino-5-nitropyridine", Proc. SPIE 3147, Nonlinear Optical Properties of Organic Materials X, (13 October 1997); doi: 10.1117/12.279308; https://doi.org/10.1117/12.279308

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