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首页> 外文会议>International Conference on Correlation Optics; 20030916-20030919; Chernivtsi; UA >Diffraction diagnostics of phase singularities at optical beams
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Diffraction diagnostics of phase singularities at optical beams

机译：光束相位奇异点的衍射诊断

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摘要

A diffraction technique for diagnostics of phase singularities occurring at optical beams is presented. It is shown that both the phase twirling (clockwise or counterclockwise) of a vortex optical beam and the modulus of an azimuthal mode index of the beam are directly and unambiguously determined on the bending of interference fringes in a strip Young's interference experiment. Applicability of the proposed technique into diagnostics of phase singularities kind of non-localized dark interference fringes and into revealing of optical vortices at developed speckle fields at far zone is demonstrated. Advantages of the diffraction diagnostics of phase singularities at optical fields against the classical interference testing are argued.
机译：提出了一种用于诊断在光束处出现的相位奇异性的衍射技术。结果表明，在条形杨氏干涉实验中，干涉条纹的弯曲直接且明确地确定了旋涡光束的相位旋转（顺时针或逆时针）和光束的方位模指数模量。证明了所提出的技术在相奇异性类型的非局部暗干涉条纹的诊断中以及在远区域发达的散斑场上揭示光学涡旋的适用性。提出了在光学场中进行相位奇异点衍射诊断相对于经典干涉测试的优势。

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