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Scattering-based hole burning mediated by localized surface plasmon resonance in photoreactive random media containing Ag nanoparticles

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5 Author(s)
Murai, Shunsuke ; Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan ; Fujimoto, Yutaka ; Iwata, Koji ; Fujita, Koji
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Photoreactive random media containing silver nanoparticles (Ag NPs) have been fabricated, and hole burning effects based on the interference of multiply scattered light have been investigated. Through the analysis of hole profiles, transport mean free path is estimated for the light with the wavelength of 585 nm. We find that in the samples embedded with Ag NPs is much shorter compared with that in a medium containing the same amount of titania (TiO2) NPs, indicating that Ag NPs scatter 585 nm lightwaves much stronger than TiO2 NPs because of their larger scattering cross sections due to the localized surface plasmon resonance.

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Applied Physics Letters  (Volume:98 ,  Issue: 12 )