旋转介质对光的拖曳
On the dragging of light by a rotating medium
摘要：
当光通过旋转介质时，光学偏振被旋转。最近，有人认为这种旋转也适用于传输的图像（Padgett等人，2006年）。我们通过将Player（1976）的分析推广到一般的电磁场来研究这两种现象。我们发现，在这种更一般的情况下，旋转介质内的波动方程必须由一个与光的轨道角动量有关的项来修正。我们表明，光学自旋和轨道角动量帐户分别为旋转的偏振和旋转的透射图像。
英文摘要：
When light is passing through a rotating medium the optical polarisation is rotated. Recently it has been reasoned that this rotation applies also to the transmitted image (Padgett et al. 2006). We examine these two phenomena by extending an analysis of Player (1976) to general electromagnetic fields. We find that in this more general case the wave equation inside the rotating medium has to be amended by a term which is connected to the orbital angular momentum of the light. We show that optical spin and orbital angular momentum account respectively for the rotation of the polarisation and the rotation of the transmitted image.
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