A cross-stacked plasmonic nanowire network for high-contrast femtosecond optical switching. Issue 3 (16th December 2015)

• Record Type: Journal Article
• Authors: Lin, Yuanhai; Zhang, Xinping; Fang, Xiaohui; Liang, Shuyan
• Is Part Of: Nanoscale. Volume 8:Issue 3(2016)
• Page Start: 1421
• Page End: 1429
• Publication Date: 2015-12-16
• Subjects: Nanoscience -- Periodicals; Nanotechnology -- Periodicals; 620.505
• DOI: 10.1039/c5nr06464c
• Languages: English
• ISSNs: 2040-3364

Abstract

Abstract : Femtosecond optical switching with more than 22% nonlinear optical modulation is achieved using a 3D network of plasmonic gold nanowires. Abstract : We report an ultrafast optical switching device constructed by stacking two layers of gold nanowires into a perpendicularly crossed network, which works at a speed faster than 280 fs with an on/off modulation depth of about 22.4%. The two stacks play different roles in enhancing consistently the optical switching performance due to their different dependence on the polarization of optical electric fields. The cross-plasmon resonance based on the interaction between the perpendicularly stacked gold nanowires and its Fano-coupling with Rayleigh anomaly is the dominant mechanism for such a high-contrast optical switching device.