Realization of multiphoton lasing from carbon nanodot microcavities

Wenfei Zhang; Yiqun Ni; Xuhui Xu; Wei Lu; Pengpeng Ren; Peiguang Yan; Chun Kit Siu; Shuangchen Ruan; Siu Fung Yu

doi:10.1039/c7nr01101f

Realization of multiphoton lasing from carbon nanodot microcavities

Wenfei Zhang, Yiqun Ni, Xuhui Xu, Wei Lu, Pengpeng Ren, Peiguang Yan, Chun Kit Siu, Shuangchen Ruan, Siu Fung Yu

Research output: Journal article publication › Journal article › Academic research › peer-review

20 Citations (Scopus)

Abstract

The use of organosilane chains to link carbon nanodots (CDs) through organosilane surface functional groups is proposed to improve the efficiency of multiphoton absorption. As a result, a large absorption coefficient of 1.16 × 10-6cm5per GW3is obtained and four-photon luminescence under 1900 nm excitation is observed from the CDs at room temperature. Furthermore, a CD laser, which demonstrates random lasing under three-photon (i.e. 1400 nm) excitation, can be realized by sandwiching a CD film between a quartz substrate and a dielectric mirror. The formation of strongly confined microcavities, which arise from the non-uniform distribution of refractive indices inside the CD film, is attributed to the realization of lasing emission.

Original language	English
Pages (from-to)	5957-5963
Number of pages	7
Journal	Nanoscale
Volume	9
Issue number	18
DOIs	https://doi.org/10.1039/c7nr01101f
Publication status	Published - 14 May 2017

ASJC Scopus subject areas

General Materials Science

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10.1039/c7nr01101f

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title = "Realization of multiphoton lasing from carbon nanodot microcavities",

abstract = "The use of organosilane chains to link carbon nanodots (CDs) through organosilane surface functional groups is proposed to improve the efficiency of multiphoton absorption. As a result, a large absorption coefficient of 1.16 × 10-6cm5per GW3is obtained and four-photon luminescence under 1900 nm excitation is observed from the CDs at room temperature. Furthermore, a CD laser, which demonstrates random lasing under three-photon (i.e. 1400 nm) excitation, can be realized by sandwiching a CD film between a quartz substrate and a dielectric mirror. The formation of strongly confined microcavities, which arise from the non-uniform distribution of refractive indices inside the CD film, is attributed to the realization of lasing emission.",

author = "Wenfei Zhang and Yiqun Ni and Xuhui Xu and Wei Lu and Pengpeng Ren and Peiguang Yan and Siu, {Chun Kit} and Shuangchen Ruan and Yu, {Siu Fung}",

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T1 - Realization of multiphoton lasing from carbon nanodot microcavities

AU - Zhang, Wenfei

AU - Ni, Yiqun

AU - Xu, Xuhui

AU - Lu, Wei

AU - Ren, Pengpeng

AU - Yan, Peiguang

AU - Siu, Chun Kit

AU - Ruan, Shuangchen

AU - Yu, Siu Fung

PY - 2017/5/14

Y1 - 2017/5/14

N2 - The use of organosilane chains to link carbon nanodots (CDs) through organosilane surface functional groups is proposed to improve the efficiency of multiphoton absorption. As a result, a large absorption coefficient of 1.16 × 10-6cm5per GW3is obtained and four-photon luminescence under 1900 nm excitation is observed from the CDs at room temperature. Furthermore, a CD laser, which demonstrates random lasing under three-photon (i.e. 1400 nm) excitation, can be realized by sandwiching a CD film between a quartz substrate and a dielectric mirror. The formation of strongly confined microcavities, which arise from the non-uniform distribution of refractive indices inside the CD film, is attributed to the realization of lasing emission.

AB - The use of organosilane chains to link carbon nanodots (CDs) through organosilane surface functional groups is proposed to improve the efficiency of multiphoton absorption. As a result, a large absorption coefficient of 1.16 × 10-6cm5per GW3is obtained and four-photon luminescence under 1900 nm excitation is observed from the CDs at room temperature. Furthermore, a CD laser, which demonstrates random lasing under three-photon (i.e. 1400 nm) excitation, can be realized by sandwiching a CD film between a quartz substrate and a dielectric mirror. The formation of strongly confined microcavities, which arise from the non-uniform distribution of refractive indices inside the CD film, is attributed to the realization of lasing emission.

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DO - 10.1039/c7nr01101f

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JF - Nanoscale

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Realization of multiphoton lasing from carbon nanodot microcavities

Abstract

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