Light distribution in the focal regions of a lens in a parabolic index medium
作者： Derek Bertilone
DOI: 10.1364/AO.26.000306
关键词: Plane wave 、 Optics 、 Lens (optics) 、 Refractive index 、 Geometrical optics 、 Cardinal point 、 Physics 、 Optical power 、 Dimensionless quantity 、 Wave propagation
摘要: We present a detailed examination of the light distribution near foci plane wave focused by diffraction-limited lens in parabolic index medium. show how changes as degree grading is varied, and we obtain explicit very simple expressions for intensity widths. Suitable scaling reveals that results depend on only few dimensionless parameters, most crucial involving ratio focusing power to self-focusing medium itself. also investigate symmetry describe new effect which has no analog with homogeneous media.
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