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首页> 外文期刊>Optics Letters >Second-harmonic generation in single CdSe nanowires by focused cylindrical vector beams
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Second-harmonic generation in single CdSe nanowires by focused cylindrical vector beams

机译：通过聚焦圆柱形矢量梁在单个CDSE纳米线中产生二次谐波产生

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摘要

Cylindrical vector beams with radial or azimuthal polarization have created great interest due to their unique focusing characteristics and focal components. In this Letter, we investigate second-harmonic general (SHG) of single CdSe nanowires (NWs) excited by tightly focused cylindrical vector beams of 150 fs pulses at 800 nm. With the specific polarizations in the focal region, we demonstrate a three-dimensional interaction between the focal electric field components and the NWs. The excitation anisotropy of the SHG can directly be derived from the imaging patterns with the cylindrical vector beams. The highest SHG excitation efficiency is observed when the polarization is parallel to the long axis of the NW, which is confirmed by the conventional linear polarization approach. Our work with cylindrical vector beams provides a new approach to study the nonlinear phenomenon of single semiconductor NWs in three dimensions and it could be applied to many other nanoscale systems. (C) 2017 Optical Society of America
机译：由于其独特的聚焦特性和焦点部件，具有径向或方位角极化的圆柱形矢量梁产生了很大的兴趣。在这封信中，我们调查通过在800nm的紧密聚焦的圆柱形矢量束中激发的单个CDSE纳米线（NWS）的第二次谐波一般（SHG）。利用焦点区域的特定偏振，我们展示了焦电场分量和NWS之间的三维相互作用。 SHG的激发各向异性可以直接从具有圆柱形矢量梁的成像图案衍生。当极化与NW的长轴平行时观察到最高的SHG激发效率，这通过传统的线性偏振方法确认。我们与圆柱形矢量梁的工作提供了一种研究单个半导体NWS的非线性现象的新方法，并且可以应用于许多其他纳米级系统。 （c）2017年光学学会

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  • 来源
    《Optics Letters》 |2017年第13期|共4页
  • 作者

    Wang Xiao; Zeng Zhouxiaosong; Zhuang Xiujuan; Wackenhut Frank; Pan Anlian; Meixner Alfred J.;

  • 作者单位

    Hunan Univ Sch Phys &

    Elect Key Lab Micronano Phys &

    Technol Hunan Prov Changsha 410082 Hunan Peoples R China;

    Hunan Univ Sch Phys &

    Elect Key Lab Micronano Phys &

    Technol Hunan Prov Changsha 410082 Hunan Peoples R China;

    Hunan Univ Sch Phys &

    Elect Key Lab Micronano Phys &

    Technol Hunan Prov Changsha 410082 Hunan Peoples R China;

    Univ Tubingen Inst Phys &

    Theoret Chem Morgenstelle 18 D-72076 Tubingen Germany;

    Hunan Univ Sch Phys &

    Elect Key Lab Micronano Phys &

    Technol Hunan Prov Changsha 410082 Hunan Peoples R China;

    Univ Tubingen Inst Phys &

    Theoret Chem Morgenstelle 18 D-72076 Tubingen Germany;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 计量学;光学;
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