The interaction of spin and intrinsic orbital angular momentum of light is observed, as evidenced by length-dependent rotations of both spatial patterns and optical polarization in a cylindrically symmetric isotropic optical fiber. Such rotations occur in a straight few-mode fiber when superpositions of two modes with parallel and antiparallel orientation of spin and intrinsic orbital angular momentum (IOAM=2ℏ) are excited, resulting from a degeneracy splitting of the propagation constants of the modes.
Vitullo, Dashiell L.P.; Leary, Cody; Gregg, Patrick; Smith, Roger A.; Reddy, Dileep V.; Ramachandran, Siddharth; and Raymer, Michael G., "Observation of Interaction of Spin and Intrinsic Orbital Angular Momentum of Light" (2017). Physical Review Letters, 118, 083601-. 10.1103/PhysRevLett.118.083601. Retrieved from https://openworks.wooster.edu/facpub/316
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