Abstract
We demonstrate an innovative concept for nanoscale electro-optic switching. It exploits the frequency shift of a narrow-band Fano resonance mode in a plasmonic planar metamaterial induced by a change in the dielectric properties of an adjacent chalcogenide glass layer. An electrically stimulated transition between amorphous and crystalline forms of the glass brings about a 150 nm shift in the near-infrared resonance providing transmission modulation with a contrast ratio of 4:1 in a device of subwavelength thickness.
Original language | English (US) |
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Article number | 143105 |
Journal | Applied Physics Letters |
Volume | 96 |
Issue number | 14 |
DOIs | |
State | Published - 2010 |
Externally published | Yes |
Bibliographical note
Funding Information:This work was supported in the U.K. by the Engineering and Physical Sciences Research Council and the Royal Society and in Italy under EU Project Nos. FP6-NMP-STRP 032131 ‘DIPNA’ and FP7-NMP 229375-2 ‘SMD’, and the Ministry of Education, University, and Research Project No. MIUR-PRIN2008. G. Adamo is gratefully acknowledged for preparing Fig. 1(a).
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)