Optical cage generated by azimuthal- and radial-variant vector beams

Man Zhongsheng; Bai Zhidong; Li Jinjian; Zhang Shuoshuo; Li Xiaoyu; Zhang Yuquan; Ge Xiaolu; Fu Shenggui

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Optical cage generated by azimuthal- and radial-variant vector beams

机译：由方位角和径向变体矢量梁产生的光学笼

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We propose a method to generate an optical cage using azimuthal-and radial-variant vector beams in a high numerical aperture optical system. A new kind of vector beam that has azimuthal-and radial-variant polarization states is proposed and demonstrated theoretically. Then, an integrated analytical model to calculate the electromagnetic field and Poynting vector distributions of the input azimuthal-and radial-variant vector beams is derived and built based on the vector diffraction theory of Richards and Wolf. From calculations, a full polarization-controlled optical cage is obtained by simply tailoring the radial index of the polarization, the uniformity U of which is up to 0.7748, and the cleanness C is zero. Additionally, a perfect optical cage can be achieved with U = 1, and C = 0 by introducing an amplitude modulation; its magnetic field and energy flow are also demonstrated in detail. Such optical cages may be helpful in applications such as optical trapping and high-resolution imaging. (C) 2018 Optical Society of America

机译：我们提出了一种在高数孔径光学系统中使用方位角和径向变体向导束产生光学笼的方法。理论上提出并在理论上展示了具有方位角和径向变体偏振态的新种类的矢量光束。然后，基于Richards和Wolf的矢量衍射理论导出和构建了计算输入方位角和径向变体向量束的电磁场和Poyntve向量分布的集成分析模型。根据计算，通过简单地定制偏振的径向指数来获得完整的偏振控制光学笼，其均匀性高达0.7748，并且清洁度C为零。另外，通过引入幅度调制，可以通过U = 1和C = 0实现完美的光学笼;其磁场和能量流也详细说明。这种光学笼可以有助于诸如光学捕获和高分辨率成像的应用。（c）2018年光学学会

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来源
《Applied optics》 |2018年第13期|共6页
作者
Man Zhongsheng; Bai Zhidong; Li Jinjian; Zhang Shuoshuo; Li Xiaoyu; Zhang Yuquan; Ge Xiaolu; Fu Shenggui;
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作者单位

Shandong Univ Technol Sch Phys &

Optoelect Engn Zibo 255000 Peoples R China;

Shandong Univ Technol Sch Phys &

Optoelect Engn Zibo 255000 Peoples R China;

Shandong Univ Technol Sch Phys &

Optoelect Engn Zibo 255000 Peoples R China;

Shandong Univ Technol Sch Phys &

Optoelect Engn Zibo 255000 Peoples R China;

Shandong Univ Technol Sch Phys &

Optoelect Engn Zibo 255000 Peoples R China;

Shenzhen Univ Nanophoton Res Ctr Shenzhen 518060 Peoples R China;

Shandong Univ Technol Sch Phys &

Optoelect Engn Zibo 255000 Peoples R China;

Shandong Univ Technol Sch Phys &

Optoelect Engn Zibo 255000 Peoples R China;

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Optical cage generated by azimuthal- and radial-variant vector beams

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