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- W2966215330 abstract "The behavior of the light field near the beam waist has attracted considerable attention due to the studies of the light spin-orbit interaction: it’s manifestation as well as potential applications. Similarly, the light beam diffraction can reveal new light particularities. We have studied the far-field diffraction of a Gaussian beam by a half-plane edge placed near the beam waist. We have solved numerically the Helmholtz equation using the spectral method. We have found symmetric penetration of the light energy into the shadow region if we placed the half-plane edge exactly in the beam waist region. The symmetry gets broken down as the edge moves along the optical axis toward or away from the lens at a distance more than 0.01% of the focal length. Experimental verification has been obtained using a Gaussian beam focused by a lens of 4 cm focal length. The results can be used for precise determination of the beam waist position while investigating the effects of the light spin-orbit interaction in focused Gaussian beams." @default.
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- W2966215330 date "2019-07-29" @default.
- W2966215330 modified "2023-09-26" @default.
- W2966215330 title "Diffraction of a Gaussian beam near the beam waist" @default.
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- W2966215330 doi "https://doi.org/10.1186/s41476-019-0113-4" @default.
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