Tuning the nonlinear optical absorption of reduced graphene oxide by chemical reduction

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Tuning the nonlinear optical absorption of reduced graphene oxide by chemical reduction. / Shi, Hongfei; Wang, Can; Sun, Zhipei; Zhou, Yueliang; Jin, Kuijuan; Redfern, Simon A T; Yang, Guozhen.

In: Optics Express, Vol. 22, No. 16, 11.08.2014, p. 19375-19385.

Research output: Contribution to journalArticleScientificpeer-review

Harvard

Shi, H, Wang, C, Sun, Z, Zhou, Y, Jin, K, Redfern, SAT & Yang, G 2014, 'Tuning the nonlinear optical absorption of reduced graphene oxide by chemical reduction' Optics Express, vol. 22, no. 16, pp. 19375-19385. https://doi.org/10.1364/OE.22.019375

APA

Shi, H., Wang, C., Sun, Z., Zhou, Y., Jin, K., Redfern, S. A. T., & Yang, G. (2014). Tuning the nonlinear optical absorption of reduced graphene oxide by chemical reduction. Optics Express, 22(16), 19375-19385. https://doi.org/10.1364/OE.22.019375

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Author

Shi, Hongfei ; Wang, Can ; Sun, Zhipei ; Zhou, Yueliang ; Jin, Kuijuan ; Redfern, Simon A T ; Yang, Guozhen. / Tuning the nonlinear optical absorption of reduced graphene oxide by chemical reduction. In: Optics Express. 2014 ; Vol. 22, No. 16. pp. 19375-19385.

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@article{219e7c9165cd49ecb0934dfd1dbe480d,
title = "Tuning the nonlinear optical absorption of reduced graphene oxide by chemical reduction",
abstract = "Reduced graphene oxides with varying degrees of reduction have been produced by hydrazine reduction of graphene oxide. The linear and nonlinear optical properties of both graphene oxide as well as the reduced graphene oxides have been measured by single beam Z-scan measurement in the picosecond region. The results reveal both saturable absorption and two-photon absorption, strongly dependent on the intensity of the pump pulse: saturable absorption occurs at lower pump pulse intensity (~1.5 GW/cm2 saturation intensity) whereas two-photon absorption dominates at higher intensities (≥5.7 GW/cm 2). Intriguingly, we find that the two-photon absorption coefficient (from 1.5 cm/GW to 4.5cm/GW) and the saturation intensity (from 1 GW/cm 2 to 2 GW/cm2) vary with chemical reduction, which is ascribed to the varying concentrations of sp2 domains and sp 2 clusters in the reduced graphene oxides. Our results not only provide an insight into the evolution of the nonlinear optical coefficient in reduced graphene oxide, but also suggest that chemical engineering techniques may usefully be applied to tune the nonlinear optical properties of various nanomaterials, including atomically thick graphene sheets.",
author = "Hongfei Shi and Can Wang and Zhipei Sun and Yueliang Zhou and Kuijuan Jin and Redfern, {Simon A T} and Guozhen Yang",
year = "2014",
month = "8",
day = "11",
doi = "10.1364/OE.22.019375",
language = "English",
volume = "22",
pages = "19375--19385",
journal = "Optics Express",
issn = "1094-4087",
number = "16",

}

RIS - Download

TY - JOUR

T1 - Tuning the nonlinear optical absorption of reduced graphene oxide by chemical reduction

AU - Shi, Hongfei

AU - Wang, Can

AU - Sun, Zhipei

AU - Zhou, Yueliang

AU - Jin, Kuijuan

AU - Redfern, Simon A T

AU - Yang, Guozhen

PY - 2014/8/11

Y1 - 2014/8/11

N2 - Reduced graphene oxides with varying degrees of reduction have been produced by hydrazine reduction of graphene oxide. The linear and nonlinear optical properties of both graphene oxide as well as the reduced graphene oxides have been measured by single beam Z-scan measurement in the picosecond region. The results reveal both saturable absorption and two-photon absorption, strongly dependent on the intensity of the pump pulse: saturable absorption occurs at lower pump pulse intensity (~1.5 GW/cm2 saturation intensity) whereas two-photon absorption dominates at higher intensities (≥5.7 GW/cm 2). Intriguingly, we find that the two-photon absorption coefficient (from 1.5 cm/GW to 4.5cm/GW) and the saturation intensity (from 1 GW/cm 2 to 2 GW/cm2) vary with chemical reduction, which is ascribed to the varying concentrations of sp2 domains and sp 2 clusters in the reduced graphene oxides. Our results not only provide an insight into the evolution of the nonlinear optical coefficient in reduced graphene oxide, but also suggest that chemical engineering techniques may usefully be applied to tune the nonlinear optical properties of various nanomaterials, including atomically thick graphene sheets.

AB - Reduced graphene oxides with varying degrees of reduction have been produced by hydrazine reduction of graphene oxide. The linear and nonlinear optical properties of both graphene oxide as well as the reduced graphene oxides have been measured by single beam Z-scan measurement in the picosecond region. The results reveal both saturable absorption and two-photon absorption, strongly dependent on the intensity of the pump pulse: saturable absorption occurs at lower pump pulse intensity (~1.5 GW/cm2 saturation intensity) whereas two-photon absorption dominates at higher intensities (≥5.7 GW/cm 2). Intriguingly, we find that the two-photon absorption coefficient (from 1.5 cm/GW to 4.5cm/GW) and the saturation intensity (from 1 GW/cm 2 to 2 GW/cm2) vary with chemical reduction, which is ascribed to the varying concentrations of sp2 domains and sp 2 clusters in the reduced graphene oxides. Our results not only provide an insight into the evolution of the nonlinear optical coefficient in reduced graphene oxide, but also suggest that chemical engineering techniques may usefully be applied to tune the nonlinear optical properties of various nanomaterials, including atomically thick graphene sheets.

UR - http://www.scopus.com/inward/record.url?scp=84906081096&partnerID=8YFLogxK

U2 - 10.1364/OE.22.019375

DO - 10.1364/OE.22.019375

M3 - Article

VL - 22

SP - 19375

EP - 19385

JO - Optics Express

JF - Optics Express

SN - 1094-4087

IS - 16

ER -

ID: 9187342