Photo-induced deposition of silver nanoparticles on periodically polarized lithium niobate

•Silver nanostructured grating pattern formation on PPLN using photodeposition.•The grating pattern microstructure explains the selective deposition mechanism.•The enhancement of optical field due to the surface plasmon resonance on silver NPs.•Silver nanostructured grating pattern enhances the opti...

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Bibliographic Details
Published in:Chemical physics letters 2015-05, Vol.627, p.82-86
Main Authors: Chen, Kai, Huang, Xiaoping, Liu, Youliang, Qi, Mingxi, Hou, Yumeng, Li, Yu, Liang, Yue, Wang, Xiang, Li, Weikang, Zhao, Qing
Format: Article
Language:English
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Summary:•Silver nanostructured grating pattern formation on PPLN using photodeposition.•The grating pattern microstructure explains the selective deposition mechanism.•The enhancement of optical field due to the surface plasmon resonance on silver NPs.•Silver nanostructured grating pattern enhances the optical absorption. Metallic nanostructures array has promising potential applications in nano-photonic devices based on surface plasmon resonance. In this letter, we report the fabrication of silver nanostructured grating pattern on periodically poled lithium niobate (PPLN) single crystal by the site-selective photo-deposition with UV-light irradiation. The microstructure of the silver nanostructured grating pattern on the positive domains was characterized by the DIC microscope and AFM. The SNOM characterization shows the enhancement of optical field due to the surface plasmon resonance (SPR) on silver NPs. Optical transmission spectra of silver nanostructured grating pattern show the silver NPs enhance the absorption.
ISSN:0009-2614
1873-4448
DOI:10.1016/j.cplett.2015.03.041