Two-photon-pumped lasing from colloidal nanocrystal quantum dots
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
© 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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