Experimental observation of subwavelength localization using metamaterial-based cavities

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Caglayan H., Bulu I., Loncar M., Ozbay E.

OPTICS LETTERS, cilt.34, sa.1, ss.88-90, 2009 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 34 Sayı: 1
  • Basım Tarihi: 2009
  • Doi Numarası: 10.1364/ol.34.000088
  • Dergi Adı: OPTICS LETTERS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.88-90
  • Abdullah Gül Üniversitesi Adresli: Hayır

Özet

We report subwavelength localization of electromagnetic fields within cavities based on metamaterials. Cavity resonances are observed in the transmission spectrum of a split-ring resonator and composite metamaterials cavity structures. These cavity resonances are shown to exhibit high-quality factors. Since the unit cells of metamaterials are much smaller than the operation wavelength, subwavelength localization is possible within these metamaterial cavity structures. In the present Letter, we show that the electromagnetic field is localized into a region of lambda/8, where lambda is the cavity resonance wavelength. (c) 2008 Optical Society of America OCIS codes: 350.4010, 160.3918.