Title: Spin-orbit Interaction-mediated Measurement of Surface Chirality Show Chinese title

Title: 自旋-轨道相互作用介导的表面手性测量

Abstract: The spin-orbit interaction in a focused-reflected beam of light results in spatially non-uniform polarization in the beam cross-section due to the superposition of orthogonal field components and polarization-dependent interface reflection coefficients. Polarization filtering the output beam leads to an interchangeable transformation of - or + 2 charge vortex into two - or + unit charge vortices, for + or - circular polarization of the input Gaussian beam. This transformation follows a trajectory, named optical vortex trajectory, that depend on the input beam spin and hence the vortex charge and reflecting surface characteristics. The OVT is used here to quantify both the sign and the magnitude of the chiral parameter of a quartz crystal. The Jones matrix-based simulation anticipates the chirality-dependent OVT that matches with experimental measurements. Show Chinese abstract

Abstract: 聚焦-反射光束中的自旋-轨道相互作用由于正交场分量的叠加以及偏振相关的界面反射系数，导致光束截面上的空间非均匀偏振。 对输出光束进行偏振滤波会导致±2电荷涡旋与两个±1单位电荷涡旋之间的可逆转换，具体取决于输入高斯光束的左旋或右旋圆偏振。 这种转换遵循一条轨迹，称为光学涡旋轨迹，该轨迹依赖于输入光束的自旋，因此也依赖于涡旋电荷和反射表面特性。 在这里，光学涡旋轨迹被用于量化石英晶体的手性参数的符号和大小。 基于琼斯矩阵的模拟预测了依赖手性的光学涡旋轨迹，与实验测量结果相匹配。