Enhanced transmission and directivity from metallic subwavelength apertures with nonuniform and nonperiodic grooves

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Li Z., Caglayan H. , Colak E., Ozbay E.

APPLIED PHYSICS LETTERS, cilt.92, sa.1, 2008 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 92 Konu: 1
  • Basım Tarihi: 2008
  • Doi Numarası: 10.1063/1.2829799


Nonuniform and nonperiodic grooves are used to enhance the transmission and directivity of emissions from a single metallic subwavelength aperture. By using nonuniform and nonperiodic grooves, the amplitude and phase of the diffracted power flow from each groove can be adjusted properly. As a result, the transmission and emission directivity can be further improved when compared to apertures with uniform and periodic grooves. Our experimental results are in good agreement with the finite difference time domain simulation results.