Tuning Optical Nonlinearity of Laser-Ablation-Synthesized Silicon Nanoparticles via Doping Concentration

Silicon nanoparticles at different doping concentrations are investigated for tuning their optical nonlinear performance. The silicon nanoparticles are synthesized from doped silicon wafers by pulsed laser ablation. Their dispersions in water are studied for both nonlinear absorption and nonlinear r...

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Bibliographic Details
Published in:Journal of nanomaterials 2014-01, Vol.2014 (2014), p.1-7
Main Authors: Hong, Minghui, Xu, Qing-hua, Kao, Tsung-Sheng, Zhu, Hai, Guo, Ziming, Jiang, Xiao-fang, Chen, Lianwei, Ho, Ghim Wei
Format: Article
Language:English
Subjects:
Dispersions
Doping
Femtosecond
Lasers
Nanomaterials
Nanoparticles
Nonlinearity
Optical properties
Optics
Silicon
Studies
Tuning
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Summary:Silicon nanoparticles at different doping concentrations are investigated for tuning their optical nonlinear performance. The silicon nanoparticles are synthesized from doped silicon wafers by pulsed laser ablation. Their dispersions in water are studied for both nonlinear absorption and nonlinear refraction properties. It is found that the optical nonlinear performance can be modified by the doping concentration. Nanoparticles at a higher doping concentration exhibit better saturable absorption performance for femtosecond laser pulse, which is ascribed to the free carrier absorption mechanism.
ISSN:1687-4110
1687-4129
DOI:10.1155/2014/652829