检流计光学扫描仪引起的偏振变化
Polarization change induced by a galvanometric optical scanner
摘要:
研究了由一对旋转平面镜构成的双轴振镜式光学扫描器的光学特性,着重研究了输入光偏振态的变化。我们得到了定义光束传播方向变换的矩阵和定义偏振态变换的琼斯矩阵。这两个矩阵都用两个反射镜的旋转角度表示。最后,我们计算了在庞加莱球的一般旋转参数,描述的偏振态的变化,每一个相互取向的反射镜。
英文摘要:
We study the optical properties of a two-axis galvanometric optical scanner constituted by a pair of rotating planar mirrors, focusing our attention on the transformation induced on the polarization state of the input beam. We obtain the matrix that defines the transformation of the propagation direction of the beam and the Jones matrix that defines the transformation of the polarization state. Both matrices are expressed in terms of the rotation angles of two mirrors. Finally, we calculate the parameters of the general rotation in the Poincare' sphere that describes the change of polarization state for each mutual orientation of the mirrors.
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