Orbital angular momentum of light and the transformation of Laguerre-Gaussian laser modes
L. Allen(Leiden University), Marco W. Beijersbergen(Leiden University), R. J. C. Spreeuw(Leiden University), J. P. Woerdman(Leiden University)
Cited by 10,246
Abstract
Laser light with a Laguerre-Gaussian amplitude distribution is found to have a well-defined orbital angular momentum. An astigmatic optical system may be used to transform a high-order Laguerre-Gaussian mode into a high-order Hermite-Gaussian mode reversibly. An experiment is proposed to measure the mechanical torque induced by the transfer of orbital angular momentum associated with such a transformation.
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