Hybrid phase-change plasmonic crystals for active tuning of lattice resonances.

TitleHybrid phase-change plasmonic crystals for active tuning of lattice resonances.
Publication TypeJournal Article
Year of Publication2013
AuthorsChen YG, Kao TS, Ng B, Li X, Luo XG, Luk'yanchuk B, Maier SA, Hong MH
JournalOptics express
Volume21
Issue11
Pagination13691-8
Date Published2013 Jun 3
Abstract

Tunable lattice resonances are demonstrated in a hybrid plasmonic crystal incorporating the phase-change material Ge2Sb2Te5 (GST) as a 20-nm-thick layer sandwiched between a gold nanodisk array and a quartz substrate. Non-volatile tuning of lattice resonances over a range Δλ of about 500 nm (1.89 µm to 2.27 µm) is achieved experimentally via intermediate phase states of the GST layer. This work demonstrates the efficacy and ease of resonance tuning via GST in the near infrared, suggesting the possibility to design broadband non-volatile tunable devices for optical modulation, switching, sensing and nonlinear optical devices.

DOI10.1155/2013/626258
Alternate JournalOpt Express