FDTD Analysis of Polarization Properties and Backscattering Coefficients in Aperture-less SNOM
FDTD Analysis of Polarization Properties and Backscattering Coefficients in Aperture-less SNOM
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DOI：
10.3379/msjmag.1403r004
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发表时间：
2014-05
影响因子：
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通讯作者：
Yongfu Cai;Qian Meng;A. Emoto;T. Shioda;H. Ono;T. Ishibashi
中科院分区：
文献类型：
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作者：
Yongfu Cai;Qian Meng;A. Emoto;T. Shioda;H. Ono;T. Ishibashi
采用三维时域有限差分法（FDTD）研究了无孔径扫描近场光学显微镜（SNOM）中的偏振特性。我们发现，散射光成为椭圆偏振与线或圆偏振光照明，和散射光的偏振态保持不变。此外，琼斯矩阵，表示入射光和散射光的偏振状态的关系，成功地获得。利用琼斯矩阵法成功地计算了任意偏振光照射下散射光的偏振态。
Polarization properties in aperture-less scanning near-field optical microscopy (SNOM) were investigated using the 3D finite-difference time-domain (FDTD) method. We found that scattered light became elliptically polarized with linear or circular-polarized light illumination, and the polarization state of scattered light was preserved. In addition, Jones matrices that express the relationship between incident light and scattered light in terms of the polarization states were successfully obtained. We succeeded in calculating the polarization state of scattered light with arbitrary polarized light illumination by using the Jones matrix method.