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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 34, Iss. 19 — Oct. 1, 2009
  • pp: 2915–2917

Coherent emission from ultrathin-walled spiral InGaAs/GaAs quantum dot microtubes

Feng Li, Zetian Mi, and Sahmuganathan Vicknesh  »View Author Affiliations


Optics Letters, Vol. 34, Issue 19, pp. 2915-2917 (2009)
http://dx.doi.org/10.1364/OL.34.002915


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Abstract

We report on the achievement of strong coherent emission from GaAs-based single-walled spiral microtubes, wherein photons are localized in an ultrathin ( λ / 25 ) region embedded with self-organized InGaAs quantum dots. The emission spectra measured at 300 K are characterized by a regular sequence of sharp optical modes with a maximum Q factor of 2500 and separation of 7   meV . The three-dimensional confinement of photons is made possible by the epitaxially smooth tube surface as well as an engineered surface geometry, achieved using a single photolithography step. The experimental results are analyzed using an equivalent planar dielectric waveguide model.

© 2009 Optical Society of America

OCIS Codes
(130.3990) Integrated optics : Micro-optical devices
(250.5590) Optoelectronics : Quantum-well, -wire and -dot devices

ToC Category:
Optoelectronics

History
Original Manuscript: July 2, 2009
Manuscript Accepted: August 9, 2009
Published: September 18, 2009

Citation
Feng Li, Zetian Mi, and Sahmuganathan Vicknesh, "Coherent emission from ultrathin-walled spiral InGaAs/GaAs quantum dot microtubes," Opt. Lett. 34, 2915-2917 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-19-2915

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