期刊：Journal of optics [Springer Science+Business Media] 日期：2004-04-20卷期号：6 (5): S248-S250被引量：17
标识
DOI：10.1088/1464-4258/6/5/020
摘要
The free propagation of a paraxial light beam can be exactly mapped on the free evolution of a 2D harmonic oscillator over half an oscillation period. We apply this mapping to give an analytical description of the dynamics of vortices and their relation to the orbital angular momentum of light.
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