Frequency upconverted lasing of nanocrystal quantum dots in microbeads

Chunfeng Zhang; Fan Zhang; An Cheng; Brian Kimball; Andrew Y. Wang; Jian Xu

doi:10.1063/1.3242352

Frequency upconverted lasing of nanocrystal quantum dots in microbeads

Chunfeng Zhang, Fan Zhang, An Cheng, Brian Kimball, Andrew Y. Wang, Jian Xu

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

Abstract

Stable, frequency upconverted lasing of semiconductor nanocrystal quantum dots was demonstrated in silica microbeads under two-photon pumping conditions. Upon infrared excitation, the stimulated emission of the nanocrystal-doped microbeads exhibits sharp peaks at λ∼610 nm with narrow line widths of 1 nm. The lasing action has been attributed to the biexciton gain coupled to the whispering gallery modes in spherical cavities, as confirmed by time-resolved photoluminescence spectra. The lasing lifetime characterized in term of pulse numbers (∼ 10⁶ pulses) was two orders of magnitude longer than that of the dye salt-based two-photon lasers.

Original language	English (US)
Article number	183109
Journal	Applied Physics Letters
Volume	95
Issue number	18
DOIs	https://doi.org/10.1063/1.3242352
State	Published - 2009

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.3242352

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title = "Frequency upconverted lasing of nanocrystal quantum dots in microbeads",

abstract = "Stable, frequency upconverted lasing of semiconductor nanocrystal quantum dots was demonstrated in silica microbeads under two-photon pumping conditions. Upon infrared excitation, the stimulated emission of the nanocrystal-doped microbeads exhibits sharp peaks at λ∼610 nm with narrow line widths of 1 nm. The lasing action has been attributed to the biexciton gain coupled to the whispering gallery modes in spherical cavities, as confirmed by time-resolved photoluminescence spectra. The lasing lifetime characterized in term of pulse numbers (∼ 106 pulses) was two orders of magnitude longer than that of the dye salt-based two-photon lasers.",

author = "Chunfeng Zhang and Fan Zhang and An Cheng and Brian Kimball and Wang, {Andrew Y.} and Jian Xu",

note = "Funding Information: The work at the Penn State University is being supported by the National Science Foundation under Grants ECCS-0824186 and ECCS-0846818 and Army Research Office under Grant Nos. DAAD19-02-D-0001 and DURIP 2008-02-136, and that at Ocean NanoTech LLC. is supported by the National Science Foundation under Grant No. 0638209.",

year = "2009",

doi = "10.1063/1.3242352",

language = "English (US)",

volume = "95",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics Publising LLC",

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TY - JOUR

T1 - Frequency upconverted lasing of nanocrystal quantum dots in microbeads

AU - Zhang, Chunfeng

AU - Zhang, Fan

AU - Cheng, An

AU - Kimball, Brian

AU - Wang, Andrew Y.

AU - Xu, Jian

N1 - Funding Information: The work at the Penn State University is being supported by the National Science Foundation under Grants ECCS-0824186 and ECCS-0846818 and Army Research Office under Grant Nos. DAAD19-02-D-0001 and DURIP 2008-02-136, and that at Ocean NanoTech LLC. is supported by the National Science Foundation under Grant No. 0638209.

PY - 2009

Y1 - 2009

N2 - Stable, frequency upconverted lasing of semiconductor nanocrystal quantum dots was demonstrated in silica microbeads under two-photon pumping conditions. Upon infrared excitation, the stimulated emission of the nanocrystal-doped microbeads exhibits sharp peaks at λ∼610 nm with narrow line widths of 1 nm. The lasing action has been attributed to the biexciton gain coupled to the whispering gallery modes in spherical cavities, as confirmed by time-resolved photoluminescence spectra. The lasing lifetime characterized in term of pulse numbers (∼ 106 pulses) was two orders of magnitude longer than that of the dye salt-based two-photon lasers.

AB - Stable, frequency upconverted lasing of semiconductor nanocrystal quantum dots was demonstrated in silica microbeads under two-photon pumping conditions. Upon infrared excitation, the stimulated emission of the nanocrystal-doped microbeads exhibits sharp peaks at λ∼610 nm with narrow line widths of 1 nm. The lasing action has been attributed to the biexciton gain coupled to the whispering gallery modes in spherical cavities, as confirmed by time-resolved photoluminescence spectra. The lasing lifetime characterized in term of pulse numbers (∼ 106 pulses) was two orders of magnitude longer than that of the dye salt-based two-photon lasers.

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JO - Applied Physics Letters

JF - Applied Physics Letters

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ER -

Frequency upconverted lasing of nanocrystal quantum dots in microbeads

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