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Realization of multiphoton lasing from carbon nanodots microcavities

Abstract

The use of organosililane chains to link carbon nanodots (CDs) through organosililane surface functional group is proposed to improve the efficiency of multiphoton absorption. As a result, large absorption coefficient of 1.16×10–6cm5/GW3 is obtained and four-photon luminescence under 1900 nm excitation is observed from the CDs at room temperature. Furthermore, CDs laser, which demonstrates random lasing under three-photon (i.e. 1400 nm) excitation, can be realized by sandwiching CDs film between a quartz substrate and a dielectric mirror. The formation of strongly confined microcavities, which are arisen from the non-uniform distribution of refractive index inside the CDs film, is attributed to the realization of lasing emission.

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Publication details

The article was received on 14 Feb 2017, accepted on 30 Mar 2017 and first published on 31 Mar 2017


Article type: Paper
DOI: 10.1039/C7NR01101F
Citation: Nanoscale, 2017, Accepted Manuscript
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    Realization of multiphoton lasing from carbon nanodots microcavities

    W. Zhang, Y. ni, X. xu, W. lu, P. ren, P. yan, C. siu, S. Ruan and S. Yu, Nanoscale, 2017, Accepted Manuscript , DOI: 10.1039/C7NR01101F

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