scholarly journals Enhanced 3 rd order optical nonlinearity in silicon nitride nanowires integrated with 2D graphene oxide films

2020 ◽  
Author(s):  
David Moss ◽  
yang qu ◽  
Jiayang Wu ◽  
Yunyi Yang ◽  
Yuning Zhang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Silicon Nitride ◽  
Pump Power ◽  
Detailed Analysis ◽  
Nonlinear Optical ◽  
Optical Nonlinearity ◽  
Optical Performance ◽  
Third Order ◽  
Trade Off ◽  
Pattern Length

numbers of GO layers and at different pump powers. By optimizing the trade-off between the nonlinearity and loss, we obtain a significant improvement in the FWM conversion efficiency of ≈7.3 dB for a uniformly coated device with 1 layer of GO and ≈9.1 dB for a patterned device with 5 layers of GO. We also obtain a significant increase in FWM bandwidth for the patterned devices. A detailed analysis of the influence of pattern length and position on the FWM performance is performed. Based on the FWM measurements, the dependence of GO’s third-order nonlinearity on layer number and pump power is also extracted, revealing interesting physical insights about the 2D layered GO films. Finally, we obtain an enhancement in the effective nonlinear parameter of the hybrid waveguides by over a factor of 100. These results verify the enhanced nonlinear optical performance of SiN waveguides achievable by incorporating 2D layered GO films.

scholarly journals Enhanced 3 rd order optical nonlinearity in silicon nitride nanowires integrated with 2D graphene oxide films

2020 ◽  
Author(s):  
David Moss ◽  
yang qu ◽  
Jiayang Wu ◽  
Yunyi Yang ◽  
Yuning Zhang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Silicon Nitride ◽  
Pump Power ◽  
Detailed Analysis ◽  
Nonlinear Optical ◽  
Optical Nonlinearity ◽  
Optical Performance ◽  
Third Order ◽  
Trade Off ◽  
Pattern Length

numbers of GO layers and at different pump powers. By optimizing the trade-off between the nonlinearity and loss, we obtain a significant improvement in the FWM conversion efficiency of ≈7.3 dB for a uniformly coated device with 1 layer of GO and ≈9.1 dB for a patterned device with 5 layers of GO. We also obtain a significant increase in FWM bandwidth for the patterned devices. A detailed analysis of the influence of pattern length and position on the FWM performance is performed. Based on the FWM measurements, the dependence of GO’s third-order nonlinearity on layer number and pump power is also extracted, revealing interesting physical insights about the 2D layered GO films. Finally, we obtain an enhancement in the effective nonlinear parameter of the hybrid waveguides by over a factor of 100. These results verify the enhanced nonlinear optical performance of SiN waveguides achievable by incorporating 2D layered GO films.

scholarly journals Optimizing the Kerr nonlinear optical performance of silicon waveguides integrated with 2D graphene oxide films

2021 ◽  
pp. 1-1
Author(s):  
Yuning Zhang ◽  
Jiayang Wu ◽  
Yang Qu ◽  
Linnan Jia ◽  
Baohua Jia ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Nonlinear Optical ◽  
Oxide Films ◽  
Optical Performance ◽  
Silicon Waveguides

scholarly journals Tunable Nonlinear Optical Property of MnS Nanoparticles with Different Size and Crystal Form

Nanomaterials ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 34
Author(s):  
Zhihao Zhang ◽  
Pengchao Li ◽  
Yuzong Gu
Keyword(s):  
Optical Property ◽  
Nonlinear Optical ◽  
Nonlinear Optical Property ◽  
Nonlinear Refraction ◽  
Synthesis Method ◽  
Crystal Form ◽  
Optical Nonlinearity ◽  
Photon Absorption ◽  
Third Order ◽  
Crystal Forms

It is significant to study the reason that semiconductor material has adjustable third-order optical nonlinearity through crystal form and dimensions are changed. αMnS nanoparticles with different crystal forms and sizes were successfully prepared by one-step hydrothermal synthesis method and their size-limited third-order nonlinear optical property was tested by Z-scan technique with 30 ps laser pulses at 532 nm wavelength. Nanoparticles of different crystal forms exhibited different NLO (nonlinear optical) responses. γMnS had stronger NLO response than αMnS because of higher fluorescence quantum yield. Two-photon absorption and the nonlinear refraction are enhanced as size of nanoparticlesreduced. The nanoparticles had maximum NLO susceptibility which was 3.09 × 10−12 esu. Susceptibility of αMnS increased about nine times than that of largest nanoparticles. However, it was reduced when size was further decreased. This trend was explained by the effects of light induced dipole moments. And defects in αMnS nanoparticles also had effect on this nonlinear process. MnS nanoparticles had potential application value in optical limiting and optical modulation.

Ethylenediamine-modified graphene oxide covalently functionalized with a tetracarboxylic Zn(ii) phthalocyanine hybrid for enhanced nonlinear optical properties

2016 ◽  
Vol 15 (7) ◽  
pp. 910-919 ◽  
Author(s):  
Zongle Li ◽  
Chunying He ◽  
Zhao Wang ◽  
Yachen Gao ◽  
Yongli Dong ◽  
...  
Keyword(s):  
Optical Properties ◽  
Graphene Oxide ◽  
Nonlinear Optical ◽  
Optical Nonlinearity ◽  
Nonlinear Optical Properties ◽  
Modified Graphene Oxide ◽  
Modified Graphene

An investigation of the enhanced optical nonlinearity of ethylenediamine-modified graphene oxide covalently functionalized with a tetracarboxylic Zn(ii) phthalocyanine.

Z-scan determination of third-order nonlinear optical nonlinearity of three azobenzenes doped polymer films

2007 ◽  
Vol 275 (1) ◽  
pp. 240-244 ◽  
Author(s):  
Tingchao He ◽  
Yongguang Cheng ◽  
Yabing Du ◽  
Yujun Mo
Keyword(s):  
Polymer Films ◽  
Nonlinear Optical ◽  
Optical Nonlinearity ◽  
Third Order ◽  
Doped Polymer

The effects of central metals on the photophysical and nonlinear optical properties of reduced graphene oxide–metal(ii) phthalocyanine hybrids

2015 ◽  
Vol 17 (11) ◽  
pp. 7149-7157 ◽  
Author(s):  
Weina Song ◽  
Chunying He ◽  
Yongli Dong ◽  
Wang Zhang ◽  
Yachen Gao ◽  
...  
Keyword(s):  
Optical Properties ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties ◽  
Optical Performance ◽  
Reduced Graphene

An investigation of the effects of central metals on the photophysical and nonlinear optical performance of RGO–MPc hybrids.

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