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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 13 — Jun. 20, 2011
  • pp: 12392–12401

Ultra-wideband optical leaky-wave slot antennas

Yan Wang, Amr S. Helmy, and George V. Eleftheriades  »View Author Affiliations

Optics Express, Vol. 19, Issue 13, pp. 12392-12401 (2011)

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We propose and investigate an ultra-wideband leaky-wave antenna that operates at optical frequencies for the purpose of efficient energy coupling between localized nanoscale optical circuits and the far-field. The antenna consists of an optically narrow aluminum slot on a silicon substrate. We analyze its far-field radiation pattern in the spectral region centered around 1550nm with a 50% bandwidth ranging from 2000nm to 1200nm. This plasmonic leaky-wave slot produces a maximum far-field radiation angle at 32° and a 3dB beamwidth of 24° at its center wavelength. The radiation pattern is preserved within the 50% bandwidth suffering only insignificant changes in both the radiation angle and the beamwidth. This wide-band performance is quite unique when compared to other optical antenna designs. Furthermore, the antenna effective length for radiating 90% and 99.9% of the input power is only 0.5λ0 and 1.5λ0 respectively at 1550nm. The versatility and simplicity of the proposed design along with its small footprint makes it extremely attractive for integration with nano-optical components using existing technologies.

© 2011 OSA

OCIS Codes
(260.3910) Physical optics : Metal optics
(350.4238) Other areas of optics : Nanophotonics and photonic crystals
(280.4788) Remote sensing and sensors : Optical sensing and sensors
(250.5403) Optoelectronics : Plasmonics

ToC Category:
Optics at Surfaces

Original Manuscript: April 19, 2011
Revised Manuscript: May 23, 2011
Manuscript Accepted: May 30, 2011
Published: June 10, 2011

Yan Wang, Amr S. Helmy, and George V. Eleftheriades, "Ultra-wideband optical leaky-wave slot antennas," Opt. Express 19, 12392-12401 (2011)

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  1. W. L. Barnes, A. Dereux, and T. W. Ebbesen, “Surface plasmon subwavelength optics,” Nature 424, 824–830 (2003). [CrossRef] [PubMed]
  2. J. Takahara and T. Kobayashi, “From subwavelength optics to nano-optics,” Opt. Photon. News 15, 54–59 (2004). [CrossRef]
  3. E. Ozbay, “Plasmonics: merging photonics and electronics at nanoscale dimensions,” Science 311, 189–193 (2006). [CrossRef] [PubMed]
  4. P. Ginzburg, D. Arbel, and M. Orenstein, “Gap plasmon polariton structure for very efficient microscale-to-nanoscale interfacing,” Opt. Lett. 31, 3288–3290 (2006). [CrossRef] [PubMed]
  5. J. Tian, S. Yu, W. Yan, and M. Qiu, “Broadband high-efficiency surface-plasmon-plolariton coupler with silicon-metal interface,” Appl. Phys. Lett. 95, 013504 (2009). [CrossRef]
  6. P. Ginzburg and M. Orenstein, “Plasmonic transmission lines: from micro to nano scale with λ/4 impedance matching,” Opt. Express 15, 6762–6767 (2007). [CrossRef] [PubMed]
  7. H. Giessen and M. Lippitz, “Directing light emission from quantum dots,” Science 329, 910–911 (2010). [CrossRef] [PubMed]
  8. L. Novotny, “Effective wavelength scaling for optical antennas,” Phys. Rev. Lett. 98, 266802 (2007). [CrossRef] [PubMed]
  9. A. Alú and N. Engheta, “Tuning the scattering response of optical nanoantennas with nanocircuit loads,” Nat. Photonics 2, 307–310 (2008). [CrossRef]
  10. T. H. Taminiau, F. D. Stefani, F. B. Segerink, and N. F. van Hulst, “Optical antennas direct single-molecule emission,” Nat. Photonics 2, 234–237 (2008). [CrossRef]
  11. E. Cubukcu, E. A. Kort, K. B. Crozier, and F. Capasso, “Plasmonic laser antenna,” Appl. Phys. Lett. 89, 093120 (2006). [CrossRef]
  12. N. Yu, E. Cubukcu, L. Diehl, D. Bour, S. Corzine, J. Zhu, G. Höfler, K. B. Crozier, and F. Capasso, “Bowtie plasmonic quantum cascade laser antenna,” Opt. Express 15, 13272–13281 (2007). [CrossRef] [PubMed]
  13. A. G. Curto, G. Volpe, T. H. Taminiau, M. P. Kreuzer, R. Quidant, and N. F. van Hulst, “Unidirectional emission of a quantum dot coupled to a nanoantenna,” Science 329, 930–933 (2010). [CrossRef] [PubMed]
  14. T. Kosako, Y. Kadoya, and H. F. Hofmann, “Directional control of light by a nano-optical Yagi-Uda antenna,” Nat. Photonics 4, 312–315 (2010). [CrossRef]
  15. X. X. Liu and A. Alú, “Subwavelength leaky-wave optical nanoantennas: directive radiation from linear arrays of plasmonic nanoparticles,” Phys. Rev. B 82, 144305 (2010). [CrossRef]
  16. P. Bharadwaj, B. Deutsch, and L. Novotny, “Optical antennas,” Adv. Opt. Photon. 1, 438–483 (2009). [CrossRef]
  17. A. Neto and S. Maci, “Green’s function for an infinite slot printed between two homogeneous dielectrics - part I: magnetic currents,” IEEE Trans. Antennas Propag. 51, 1572–1581 (2003). [CrossRef]
  18. A. Neto and S. Maci, “Green’s function for an infinite slot printed between two homogeneous dielectrics - part II: uniform asymptotic solution,” IEEE Trans. Antennas Propag. 52, 666–676 (2004). [CrossRef]
  19. G. V. Eleftheriades and G. M. Rebeiz, “Self and mutual admittance of slot antennas on a dielectric half-space,” Int. J. Infrared Millim. Waves 14, 1925–1946 (1993). [CrossRef]
  20. C. A. Balanis, Antenna Theory: Analysis and Design , 3rd ed. (Wiley, 2005), Chap. 10.
  21. A. D. Rakić, A. B. Djurišić, J. M. Elazar, and M. L. Majewski, “Optical properties of metallic films for vertical-cavity optoelectronic devices,” Appl. Opt. 37, 5271–5283 (1998). [CrossRef]
  22. J. J. Burke, G. I. Stegeman, and T. Tamir, “Surface-polariton-like waves guided by thin, lossy metal films,” Phys. Rev. B 33, 55186–5201 (1986). [CrossRef]
  23. Y. Wang, R. Islam, and G. V. Eleftheriades, “An ultra-short contra-directional coupler utilizing surface plasmon-polaritons at optical frequencies,” Opt. Express 14, 7279–7290 (2006). [CrossRef] [PubMed]
  24. G. Veronis and S. Fan, “Guided subwavelength plasmonic mode supported by a slot in a thin metal film,” Opt. Lett. 30, 3359–3361 (2005). [CrossRef]

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