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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 35, Iss. 16 — Aug. 15, 2010
  • pp: 2783–2785

Quantum-cascade laser integrated with a metal–dielectric–metal-based plasmonic antenna

Dibyendu Dey, John Kohoutek, Ryan M. Gelfand, Alireza Bonakdar, and Hooman Mohseni  »View Author Affiliations

Optics Letters, Vol. 35, Issue 16, pp. 2783-2785 (2010)

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Optical nanoantennas are capable of enhancing the near-field intensity and confining optical energy within a small spot size. We report a novel metal–dielectric–metal coupled-nanorods antenna integrated on the facet of a quantum-cascade laser. Finite-difference time-domain simulations showed that, for dielectric thicknesses in the range from 10 to 30 nm , peak optical intensity at the top of the antenna gap is 4000 times greater than the incident field intensity. This is 4 times higher enhancement compared to a coupled metal antenna. The antenna is fabricated using focused ion-beam milling and measured using modified scanning probe microscopy. Such a device has potential applications in building mid-IR biosensors.

© 2010 Optical Society of America

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(280.1415) Remote sensing and sensors : Biological sensing and sensors
(250.5403) Optoelectronics : Plasmonics
(140.5965) Lasers and laser optics : Semiconductor lasers, quantum cascade

ToC Category:

Original Manuscript: June 16, 2010
Revised Manuscript: July 20, 2010
Manuscript Accepted: July 21, 2010
Published: August 13, 2010

Virtual Issues
Vol. 5, Iss. 13 Virtual Journal for Biomedical Optics

Dibyendu Dey, John Kohoutek, Ryan M. Gelfand, Alireza Bonakdar, and Hooman Mohseni, "Quantum-cascade laser integrated with a metal–dielectric–metal-based plasmonic antenna," Opt. Lett. 35, 2783-2785 (2010)

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