Geometric Doppler Effect: Spin-Split Dispersion of Thermal Radiation
Geometric Doppler Effect: Spin-Split Dispersion of Thermal Radiation
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DOI：
10.1103/physrevlett.105.136402
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发表时间：
2010-09-21
影响因子：
8.6
通讯作者：
Hasman, Erez
中科院分区：
文献类型：
--
作者：
Dahan, Nir;Gorodetski, Yuri;Hasman, Erez
观察到了由热辐射自旋分裂色散关系所表现的几何多普勒效应。在由耦合热天线阵列组成的结构中获得了与自旋相关的色散分裂。这种效应是由于沿着局部各向异性轴在空间旋转的结构传播的表面波动力学产生的自旋-轨道相互作用造成的。在热辐射中自旋对称性破缺的观测可以用来操纵自发辐射或受激辐射。
A geometric Doppler effect manifested by a spin-split dispersion relation of thermal radiation is observed. A spin-dependent dispersion splitting was obtained in a structure consisting of a coupled thermal antenna array. The effect is due to a spin-orbit interaction resulting from the dynamics of the surface waves propagating along the structure whose local anisotropy axis is rotated in space. The observation of the spin-symmetry breaking in thermal radiation may be utilized for manipulation of spontaneous or stimulated emission.