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Large third-order n...
Large third-order nonlinear refractive index coefficient based on gold nanoparticle aggregate films
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Bai, Songang (författare)
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Li, Qiang (författare)
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Zhang, Han (författare)
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Chen, Xingxing (författare)
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Luo, Si (författare)
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Gong, Hanmo (författare)
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Yang, Yuanqing (författare)
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Zhao, Ding (författare)
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- Qiu, Min (författare)
- KTH,Optik och Fotonik, OFO
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(creator_code:org_t)
- American Institute of Physics (AIP), 2015
- 2015
- Engelska.
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Ingår i: Applied Physics Letters. - : American Institute of Physics (AIP). - 0003-6951 .- 1077-3118. ; 107:14
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Au nanoparticles show large third-order nonlinear effect and ultra-fast response. Here a high nonlinear aggregate film based on self-assembled gold nanoparticles is reported and its third-order nonlinear refractive index coefficient is measured by Z-scan experiment. The third-order nonlinear refractive index coefficient of the Au nanoparticle aggregate film (gamma(1) = 9.2 x 10(-9) cm(2)/W) is found to be larger than that of an 8-nm-thick sputtered Au film (gamma(2)= 6.5 x 10(-9) cm(2)/W). This large nonlinear effect can be attributed to the strong field enhancement due to localized plasmon resonances between Au nanoparticles. The result shows that the self-assembled Au nanoparticle aggregate film could be a promising candidate as a third-order nonlinear optical material.
Ämnesord
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Nyckelord
- Au Triangular Nanoprism
- Z-Scan Measurement
- Optical Properties
- Plasmon Resonance
- Arrays
- Dipole
- Sers
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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