Guo L J, Min C J, Yuan G H, Zhang C L, Wang J G, Shen Z, Yuan X-C
Institute of Modern Optics, Key Laboratory of Optical Information Science & Technology, Ministry of Education of China, Nankai University, Tianjin 300071, China.
Opt Express. 2012 Oct 22;20(22):24748-53. doi: 10.1364/OE.20.024748.
Novel hybrid-polarized vector beams with radial and azimuthal polarization states in arbitrary fan-sectors are generated and studied for manipulating surface plasmon polaritons (SPPs). The method has high energy conversion efficiency based on an interferometric arrangement with a Dammann vortex phase grating. The polarization states of generated beams are measured by a linear polarizer and show excellent agreement with theoretical predictions. The manipulation properties of the hybrid-polarized beams on SPPs excitation and distribution are demonstrated by both experiments and simulations. The results show that focusing or standing wave patterns of SPPs can be obtained depending on the polarization of the beams.
生成并研究了在任意扇形区域具有径向和方位角偏振态的新型混合偏振矢量光束，用于操控表面等离激元极化激元（SPP）。该方法基于带有达曼涡旋相位光栅的干涉装置，具有较高的能量转换效率。通过线性偏振器测量所产生光束的偏振态，其结果与理论预测高度吻合。通过实验和模拟都证明了混合偏振光束对SPP激发和分布的操控特性。结果表明，根据光束的偏振情况，可以获得SPP的聚焦或驻波图案。
