Hollow sinh-Gaussian beams and their paraxial properties
نویسندگان
چکیده
منابع مشابه
Radiation forces of highly focused radially polarized hollow sinh-Gaussian beams on a Rayleigh metallic particle
Radiation forces of highly focused radially polarized hollow sinh-Gaussian beams on a Rayleigh metallic particle Zhou Zhang, Hua-Feng Xu, Jun Qu & Wei Huang a Institute of Physics and Materials Science, Anhui University, Hefei, China b Laboratory of Atmospheric Physico-Chemistry, Anhui Institute of Optics & Fine Mechanics, Chinese Academy of Sciences, Hefei, China c School of Environmental Scie...
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For optical and near-optical applications in electromagnetics, the directed propagation of waves in free space and in lenslike media is often in the Cartesian form of Gaussian or more general Hermite-sinusoidal-Gaussian beams. It has been shown that recurring (rather than continuing) forms of such beams are possible in the paraxial approximation for certain hollow metal waveguides, in which mul...
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Gaussian beams have been widely used for propagating electromagnetic waves in free space and in certain other optical systems. It has been suggested that recurring forms of such beams might also be useful for propagation in planar or rectangular metal waveguides. Experimental verification of the recurrence of the Gaussian field distribution in metal waveguides is reported here.
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For exact (i.e., non-paraxial) waves 1c, representing freely propagating Gaussian beams in two and three dimensions, the patterns of phase singularities, that is zeros of 11,, are studied in detail. The zeros (points in two dimensions, and rings in three) are phase dislocations (optical vortices). The waves depend on a single parameter L , representing the radius of the waist of the beam. As L ...
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ژورنال
عنوان ژورنال: Optics Express
سال: 2012
ISSN: 1094-4087
DOI: 10.1364/oe.20.009682