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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 33, Iss. 15 — Aug. 1, 2008
  • pp: 1693–1695

Controlling the emission profile of a nanowire with a conical taper

Niels Gregersen, Torben R. Nielsen, Julien Claudon, Jean-Michel Gérard, and Jesper Mørk  »View Author Affiliations


Optics Letters, Vol. 33, Issue 15, pp. 1693-1695 (2008)
http://dx.doi.org/10.1364/OL.33.001693


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Abstract

The influence of a tapering on nanowire light-emission profiles is studied. We show that, for nanowires with divergent output beams, the introduction of a conical tapering with a small opening angle reduces the beam divergence and increases transmission. This results in a dramatic increase in the collection efficiency of the detection optics. For a realistic tapering and a modest NA, the collection efficiency is enhanced by more than a factor of 2. This improvement is ensured by the adiabatic expansion of the guided mode in the tapering.

© 2008 Optical Society of America

OCIS Codes
(140.3300) Lasers and laser optics : Laser beam shaping
(250.5590) Optoelectronics : Quantum-well, -wire and -dot devices

ToC Category:
Optoelectronics

History
Original Manuscript: March 11, 2008
Revised Manuscript: June 12, 2008
Manuscript Accepted: June 25, 2008
Published: July 24, 2008

Citation
Niels Gregersen, Torben R. Nielsen, Julien Claudon, Jean-Michel Gérard, and Jesper Mørk, "Controlling the emission profile of a nanowire with a conical taper," Opt. Lett. 33, 1693-1695 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-15-1693


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