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Linear and nonlinear optical properties of KDP crystals with incorporated Al_2O_3n·H_2O nanoparticles

机译:掺有Al_2O_3n·H_2O纳米粒子的KDP晶体的线性和非线性光学性质

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摘要

Optical and nonlinear optical properties of a novel composite system based on KDP single crystals with embedded nanoparticles of nanostructured oxyhydroxide of aluminum (Al_2O_3·nH2O, NOA), were studied. KDP crystals with NOA nanoparticles (KDP:NOA) possess high optical quality and homogeneity. Optical spectroscopy showed the presence of an absorption band at 270 nm caused by NOA nanoparticles incorporated in the KDP matrix. There was observed an enhancement of nonlinear refractive index and inversion of its sign in KDP:NOA crystals in comparison with nominally pure KDP crystals under excitation of picosecond laser pulses. The obtained results demonstrate that KDP: NOA is a promising composite material for optoelectronics and nonlinear optics.
机译:研究了一种新型的基于KDP单晶的复合体系的光学和非线性光学性质,该体系嵌入了纳米结构的铝纳米羟基氧化物(Al_2O_3·nH2O,NOA)。具有NOA纳米颗粒(KDP:NOA)的KDP晶体具有很高的光学质量和同质性。光谱显示由结合在KDP基质中的NOA纳米颗粒引起的在270nm处的吸收带的存在。与皮秒激光脉冲激发下的名义上纯的KDP晶体相比,在KDP:NOA晶体中观察到非线性折射率的增强和其符号的反转。所得结果表明,KDP:NOA是一种有前途的光电子和非线性光学复合材料。

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