Anisotropic and enhanced absorptive nonlinearities in a macroscopic film induced by aligned gold nanorods

Jiafang Li*, Siyun Liu, Ye Liu, Fei Zhou, Zhi Yuan Li

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

68 Citations (Scopus)

Abstract

Anisotropic and enhanced nonlinear absorption (NLA) has been observed from aligned gold nanorods (GNRs) embedded in a poly(vinyl alcohol) film, which was realized by a stretched-film method. Open-aperture Z-scan experiments revealed that the stretch process enhanced the NLA coefficient by approximately nine times and increased the anisotropic factor of NLA to ∼20. The enhancement in the NLA coefficient reached as high as ∼91 times after increasing the concentration of GNRs by four times and this is attributed to the plasmonic interaction between densely packed GNRs.

Original languageEnglish
Article number263103
JournalApplied Physics Letters
Volume96
Issue number26
DOIs
Publication statusPublished - 28 Jun 2010
Externally publishedYes

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