CHEN Hao, LI Yong-ping. Gouy phase shift of the highly focused radially polarized beam[J]. Chinese Journal of Quantum Electronics, 2007, 24(5): 539
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The Gouy phase shift in the focal field of high-N A focused radially polarized beam was investigated in detail. Analytical expression for the Gouy phase shift can be derived using tilted wave interpretation,which provides a reasonable prediction compared to vectorial diffraction numerical simulation. Using this method,irregular wave spacing in the vicinity of the focus can be revealed.