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Transversal optical vortex in the interference field of two off-axis Gaussian beams

Wang Li Wang Qing-Feng Wang Xi-Qing Lü Bai-Da

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Transversal optical vortex in the interference field of two off-axis Gaussian beams

Wang Li, Wang Qing-Feng, Wang Xi-Qing, Lü Bai-Da
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  • The structure of the wavefront and transversal optical vortices in an interference field of two off-axis Gaussian beams is studied. It is shown that the positions of phase saddles and vortices depend on the off-axis parameter, beam width, phase and relative amplitude of beams. The saddle can be located inside or outside the vortices. For a certain value of the governing parameter, the saddle point coincides with the vortex. For off-axis beams, the encounters of the saddle point and vortex on both sides in the XZ cross-section do not occur at the same governing parameter η. Moreover, the x value corresponding to the encounter of saddle points is not equal to the x value corresponding to the encounter of vortices.
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  • Abstract views:  7113
  • PDF Downloads:  1230
  • Cited By: 0
Publishing process
  • Received Date:  29 March 2006
  • Accepted Date:  27 April 2006
  • Published Online:  08 January 2007

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