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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 33, Iss. 21 — Nov. 1, 2008
  • pp: 2437–2439

Two-photon-pumped lasing from colloidal nanocrystal quantum dots

Chunfeng Zhang, Fan Zhang, Ting Zhu, An Cheng, Jian Xu, Qi Zhang, Suzanne E. Mohney, Ron H. Henderson, and Y. Andrew Wang  »View Author Affiliations


Optics Letters, Vol. 33, Issue 21, pp. 2437-2439 (2008)
http://dx.doi.org/10.1364/OL.33.002437


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Abstract

Upconverted lasing in the nonlinear, two-photon absorption regime has been demonstrated, for the first time to the best of our knowledge in colloidal nanocrystal quantum dots (NQDs). Upon pulse excitation at subbandgap photon energies the radiative recombination of excitons in close-packed CdSe/CdS/ZnS core-shell NQDs was found to be sufficiently fast to compete with the intrinsic nonradiative Auger recombination, as confirmed by the presence of a fast decay ( 7 ps ) in the time-resolved photoluminescence.

© 2008 Optical Society of America

OCIS Codes
(140.5960) Lasers and laser optics : Semiconductor lasers
(190.4180) Nonlinear optics : Multiphoton processes

ToC Category:
Nonlinear Optics

History
Original Manuscript: May 20, 2008
Revised Manuscript: August 23, 2008
Manuscript Accepted: September 9, 2008
Published: October 21, 2008

Citation
Chunfeng Zhang, Fan Zhang, Ting Zhu, An Cheng, Jian Xu, Qi Zhang, Suzanne E. Mohney, Ron H. Henderson, and Y. Andrew Wang, "Two-photon-pumped lasing from colloidal nanocrystal quantum dots," Opt. Lett. 33, 2437-2439 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-21-2437

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