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Two-Photon Absorption Properties of Mn-Doped ZnS Quantum Dots

机译：Mn掺杂ZnS量子点的双光子吸收特性

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摘要

@@ We investigate the two-photon absorption and nonlinear refractive index properties of a quantum dot material based on ZnS nanocrystals doped with Mn isoelectronic impurities, using the Z-scan technique with 532nm picosecond laser pulses. The Mn-doped ZnS quantum dots have an average two-photon absorption cross section as high as 13600 Goeppert-Mayer units, which turn it into a very promising material for fluorescent label and imaging in biological samples. In addition, we also found that the two-photon absorption coeflicient initially increases and then decreases with increasing pulse irradiance, which demonstrates the presence of the higherorder nonlinearity under the strong excitation.
机译：@@我们使用Z扫描技术和532nm皮秒激光脉冲，研究了基于掺杂Mn等电子杂质的ZnS纳米晶体的量子点材料的双光子吸收和非线性折射率特性。 Mn掺杂的ZnS量子点的平均双光子吸收截面高达13600 Goeppert-Mayer单位，这使其成为用于荧光标记和生物样品成像的非常有前途的材料。此外，我们还发现，随着脉冲辐照度的增加，双光子吸收系数开始增大，然后减小，这表明在强激发下存在更高阶的非线性。

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  • 来源
    《中国物理快报：英文版》 |2006年第11期|3097-3100|共4页
  • 作者

    ZHENG Jia-Jin; ZHANG Gui-Lan; GUO Yang-Xue; WANG Xiao-Yan; CHEN Wen-Ju; ZHANG Xiao-Song; HUA Yu-Lin;

  • 作者单位

    Institute of Modern Optics, Nankai University, Laboratory of Optoelectronics Information Science and Technology, EMC, Tianjin 300071;

    Institute of Modern Optics, Nankai University, Laboratory of Optoelectronics Information Science and Technology, EMC, Tianjin 300071;

    Institute of Modern Optics, Nankai University, Laboratory of Optoelectronics Information Science and Technology, EMC, Tianjin 300071;

    Institute of Modern Optics, Nankai University, Laboratory of Optoelectronics Information Science and Technology, EMC, Tianjin 300071;

    Institute of Modern Optics, Nankai University, Laboratory of Optoelectronics Information Science and Technology, EMC, Tianjin 300071;

    Institute of Modern Optics, Nankai University, Laboratory of Optoelectronics Information Science and Technology, EMC, Tianjin 300071;

    Institute of Material Physics, Tianjin University of Technology, Tianjin 300191;

    Institute of Material Physics, Tianjin University of Technology, Tianjin 300191;

  • 收录信息 中国科学引文数据库(CSCD);
  • 原文格式 PDF
  • 正文语种 chi
  • 中图分类 金属学与热处理;
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