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      Generation of an axially asymmetric bessel-like beam from a metallic subwavelength aperture

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      Author
      Li, Z.
      Alici, K. B.
      Caglayan, H.
      Özbay, Ekmel
      Date
      2009
      Source Title
      Physical Review Letters
      Print ISSN
      0031-9007
      Electronic ISSN
      1079-7114
      Publisher
      American Physical Society
      Volume
      102
      Issue
      14
      Pages
      143901 (1-4)
      Language
      English
      Type
      Article
      Item Usage Stats
      127
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      Abstract
      An electromagnetic nondiffractive Bessel-like beam from a subwavelength aperture is generated by placing a metallic circular gratinglike structure in front of the aperture. When the incident wave is linearly polarized, the beam is axially asymmetric. The beam possesses fluctuating, but approximately uniform, intensity distribution along its longitudinal axis. The full width at half maximum of the beam remains less than two wavelengths over nearly ten wavelengths. Our experimental results are in good agreement with the simulation results and analytical results. © 2009 The American Physical Society.
      Permalink
      http://hdl.handle.net/11693/22782
      Published Version (Please cite this version)
      http://dx.doi.org/10.1103/PhysRevLett.102.143901
      Collections
      • Department of Electrical and Electronics Engineering 3524
      • Department of Physics 2299
      • Institute of Materials Science and Nanotechnology (UNAM) 1775
      • Nanotechnology Research Center (NANOTAM) 1006
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