Flexible, robust and highly efficient broadband nonlinear optical materials based on graphene oxide impregnated polymer sheets

Xiao-Fang Jiang; Lakshminarayana Polavarapu; Hai Zhu; Rizhao Ma; Qing-Hua Xu

doi:10.1364/PRJ.3.000A87

Journals >Photonics Research >Volume 3 >Issue 3 >Page A87 > Article

Photonics Research
Vol. 3, Issue 3, A87 (2015)

Flexible, robust and highly efficient broadband nonlinear optical materials based on graphene oxide impregnated polymer sheets

Xiao-Fang Jiang^{1、2、3、4}, Lakshminarayana Polavarapu², Hai Zhu^2、3, Rizhao Ma², and Qing-Hua Xu^2、3、*

Author Affiliations

¹State Key Laboratory of Luminescent Materials and Devices (SKLLMD), South China University of Technology, Guangzhou 510640, China

²Department of Chemistry, National University of Singapore, 117543, Singapore

³NUSNNI-NanoCore, National University of Singapore, 117576, Singapore

⁴e-mail: msxfjiang@scut.edu.cn

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DOI: 10.1364/PRJ.3.000A87 Cite this Article Set citation alerts

Xiao-Fang Jiang, Lakshminarayana Polavarapu, Hai Zhu, Rizhao Ma, Qing-Hua Xu. Flexible, robust and highly efficient broadband nonlinear optical materials based on graphene oxide impregnated polymer sheets[J]. Photonics Research, 2015, 3(3): A87 Copy Citation Text

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(a) AFM image of the as-prepared GO nanosheets. (b) Solution-processed preparation of flexible GO–PVA sheets by impregnating GO into PVA matrix and its bright field imaging. The inset is the schematic representation of GO–PVA sheets.

Fig. 1. (a) AFM image of the as-prepared GO nanosheets. (b) Solution-processed preparation of flexible GO–PVA sheets by impregnating GO into PVA matrix and its bright field imaging. The inset is the schematic representation of GO–PVA sheets.

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(a) UV–Vis–NIR transmittance spectra of GO–PVA sheets prepared with different GO/PVA weight ratios. (b) Raman spectra of GO before and after the impregnation into PVA sheet.

Fig. 2. (a) UV–Vis–NIR transmittance spectra of GO–PVA sheets prepared with different GO/PVA weight ratios. (b) Raman spectra of GO before and after the impregnation into PVA sheet.

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Fig. 3. Open aperture Z-scan results of a GO–PVA sheet (GO∶PVA=0.0025∶1) at (a) 400 and (b) 800 nm under different excitation fluences. Optical limiting response of GO–PVA sheets of different GO/PVA weight ratios under femtosecond laser pulses at (c) 400 and (d) 800 nm, respectively.

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Fig. 4. Open aperture Z-scan results of a GO–PVA sheet (GO∶PVA=0.0025∶1) at 1400 nm under excitation fluence of 68 mJ/cm2. This sample was kept in the different moisture conditions for more than 24 h before test.

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Fig. 5. Excitation fluence dependent ultrafast relaxation dynamics of GO–PVA sheet (GO∶PVA=0.0025∶1) measured by femtosecond pump–probe technique. Inset shows the normalized data on a shorter time scale.

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		800 nm		400 nm
Sample	Linear Transmittance	Optical Limiting Onset	Optical Limiting Threshold	Linear Transmittance	Optical Limiting Onset	Optical Limiting Threshold
Weight ratio ( $GO ∶ PVA$ )	T [%]	$F_{on}$ [ $mJ \cdot {cm}^{- 2}$ ]	$F_{50}$ [ $mJ \cdot {cm}^{- 2}$ ]	T [%]	$F_{on}$ [ $mJ \cdot {cm}^{- 2}$ ]	$F_{50}$ [ $mJ \cdot {cm}^{- 2}$ ]
$0.00025 ∶ 1$	97	4.0	73	63	$3.7 E - 02$	98
$0.0005 ∶ 1$	88	3.1	60	33	$3.4 E - 02$	27
$0.001 ∶ 1$	79	2.4	48	20	$3.3 E - 02$	7.7
$0.0025 ∶ 1$	40	2.2	40	2	$2.7 E - 02$	1.6