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تسجيل مستخدم جديدTransverse rotation of the momentary field distribution and the orbital angular momentum of a light beam
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A.Ya. Bekshaev
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The transverse beam pattern, usually observed in experiment, is a result of averaging the optical-frequency oscillations of the electromagnetic field distributed over the beam cross section. An analytical criterion is derived that these oscillations are coupled with a sort of rotation around the beam axis. This criterion appears to be in direct relation with the usual definition of the beam orbital angular momentum.
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