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Nonlinear optical properties of silver sols prepared by photoreduction method

✍ Scribed by Tomoo Sato; Taro Ichikawa; Tetsuya Ito; Yoshiro Yonezawa; Kohei Kadono; Toru Sakaguchi; Masaru Miya

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
405 KB
Volume
242
Category
Article
ISSN
0009-2614

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✦ Synopsis

The third-order nonlinear susceptibility ( X O)) of silver sol prepared by a photochemical method was measured by the degenerate four-wave mixing method. The X (3) of the silver sol of brown-green color was larger than that of yellow-brown color. The photo-induced aggregation of silver particles affects the X (3) of the sol. It has been found that the X O) of the silver sol is proportional to the intensity of surface-enhanced raman scattering from carboxylate ions adsorbed on the silver particle. The increase of X t3) by the enhanced local electric field due to surface plasmon resonance is proposed.

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