Abstract
The well-known effects of the spin-orbit interactions of light are manifestations of the pair's mutual influence of the three types of angular momentum (AM) of light, namely, the spin AM, the extrinsic orbital AM and the intrinsic orbital AM. Here we propose a convenient classification of the effects of the spin-orbit interactions of light and we observe one of the new effects in the frame of this classification, which is determined by the joint influence of two types of the AM on the third type of the AM, namely, the influence of the spin AM and the extrinsic orbital AM on the intrinsic orbital AM. We experimentally studied the propagation of circularly polarized light through an optical fiber coiled into a helix. We have found that the spin AM and the helix parameters affect the spatial structure of the radiation transmitted through the optical fiber. We found out that the structure of the light field rotates when changing the sign of circular polarization. The angle of rotation depends on the parameters of the helix. The results can be used to develop the general theory of spinning particles and can find application in metrology methods and nanooptics devices.
Highlights
The well-known effects of the spin-orbit interaction of light are manifestations of pair mutual influence of the three types of the angular momentum of light, namely, the spin angular momentum, the extrinsic orbital angular momentum and the intrinsic orbital angular momentum
We propose the convenient classification of the effects of the spin-orbit interaction of light and we observe one of the new effects in the frame of this classification, which is determined by the joint influence of two types of the angular momentum on the third type of the angular momentum, namely, the influence of the spin angular momentum and the extrinsic orbital angular momentum on the intrinsic orbital angular momentum
We have found that the spin angular momentum and the helix parameters affect the spatial structure of the radiation transmitted through the optical fiber
Summary
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