Nano Archive

Optical nonlinearities from transverse plasmon resonance in gold nano-rods

Qu, Shiliang and Li, Huajun and Peng, Tianyou and Gao, Yachen and Qiu, Jianrong and Zhu, Congshan (2004) Optical nonlinearities from transverse plasmon resonance in gold nano-rods. Materials Letters, 58 (9). 1427 - 1430.

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The nonlinear refraction of two gold nano-rods with different sizes was investigated by using Z-scan technique with nanosecond pulses at 532 nm. Their optical limiting (OL) effect was also studied at the wavelength. The experimental results show that they possess strong optical nonlinearities when excited near the transverse plasmon resonance, depending critically on the size of nano-rods. The nonlinear refractions arise mainly from the strong excited-state nonlinearity of conduction band electrons. In contrast, the OL effect originates from the transverse plasmon resonance absorption, excited-state absorption and absorption-induced nonlinear scattering.

Item Type:Article
Uncontrolled Keywords:Optical nonlinearities; Transverse plasmon resonance; Gold nano-rods
Subjects:Physical Science > Nano objects
Material Science > Nanostructured materials
ID Code:6888
Deposited By:SPI
Deposited On:24 Sep 2009 16:46
Last Modified:24 Sep 2009 16:46

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