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Spectral and third order nonlinear optical properties of Yttrium-doped BaWO_4 nanostructures

机译:掺钇的BaWO_4纳米结构的光谱和三阶非线性光学性质

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摘要

BaWO4 nanostructures doped with different concentrations of Yttrium have been synthesized by a chemical method. The as-prepared samples were characterized by UV-vis diffuse reflectance spectra, X-ray diffraction, Fourier transform infrared spectroscopy, Transmission electron microscopy and Raman spectra. From the UV-vis spectra, it is seen that absorption band edge shifted towards the visible region upon Y doping. The X-ray diffraction and Raman analyses reveal that the BaWO4 powders present a tetragonal structure. The third-order nonlinear optical responses of BaWO4 nanostructures on the effect of Y concentrations was investigated by Z-scan technique using a continuous wave Nd:YAG laser at 532 nm. Experimental results have shown that the observed nonlinear absorption and nonlinear refraction behavior is attributed to saturable absorption and thermal nonlinear effects.
机译:已经通过化学方法合成了掺杂有不同浓度钇的BaWO4纳米结构。制备的样品通过紫外可见漫反射光谱,X射线衍射,傅立叶变换红外光谱,透射电子显微镜和拉曼光谱进行表征。从UV-可见光谱可知,在Y掺杂时吸收带的边缘向可见区域移动。 X射线衍射和拉曼分析表明BaWO4粉末呈四方结构。使用连续波Nd:YAG激光在532 nm处进行Z扫描技术研究了BaWO4纳米结构对Y浓度影响的三阶非线性光学响应。实验结果表明,观察到的非线性吸收和非线性折射行为归因于饱和吸收和热非线性效应。

著录项

  • 来源
    《Optical Materials》 |2019年第2期|466-471|共6页
  • 作者单位

    SRM Inst Sci & Technol, Dept Phys & Nanotechnol, Nanophoton Res Lab, Chennai 603203, Tamil Nadu, India;

    SRM Inst Sci & Technol, Dept Phys & Nanotechnol, Nanophoton Res Lab, Chennai 603203, Tamil Nadu, India;

    SRM Inst Sci & Technol, Dept Phys & Nanotechnol, Nanophoton Res Lab, Chennai 603203, Tamil Nadu, India;

    Vellore Inst Technol, Sch Adv Sci, Div Phys, Chennai 600048, Tamil Nadu, India;

    SRM Inst Sci & Technol, Dept Phys & Nanotechnol, Nanophoton Res Lab, Chennai 603203, Tamil Nadu, India;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Saturable absorption; Yttrium; Z-scan; Nanostructures;

    机译:饱和吸收钇Z扫描纳米结构;

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