Topological spin-orbit interaction of light in anisotropic inhomogeneous subwavelength structures
Topological spin-orbit interaction of light in anisotropic inhomogeneous subwavelength structures
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DOI：
10.1364/ol.33.002910
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发表时间：
2008-12-15
期刊：
影响因子：
3.6
通讯作者：
Hasman, Erez
中科院分区：
文献类型：
--
作者：
Niv, Avi;Gorodetski, Yuri;Hasman, Erez
证明了空间极化态操纵引起的自旋轨道相互作用。利用亚波长结构作为各向异性非均匀介质的有效双折射特性，实现了偏振态的操纵。通过测量不可避免的自旋相关的Pancharatnam-Berry相位调制对光束远场衍射图样的影响，得到了实验验证。与通常的动态自旋轨道相互作用在时间频率（能量）域中分裂自旋态不同，这种拓扑自旋轨道相互作用导致由其空间频率（动量）简并的自旋态的分裂。(C)2008年美国光学学会
Spin-orbit interaction resulting from spatial polarization state manipulation is demonstrated. Polarization-state manipulation is achieved by utilizing the effective birefringent nature of subwavelength structures acting as an anisotropic inhomogeneous medium. Experimental verification is obtained by measuring the effect of the unavoidable spin-dependent Pancharatnam-Berry phase modulation on the far-field diffraction pattern of the beam. Unlike the usual dynamic spin-orbit interaction that splits spin states in the temporal frequency (energy) domain, this topological spin-orbit interaction results in the splitting of spin states degenerated by their spatial frequencies (momentum). (C) 2008 Optical Society of America