Fast tuning of Fano resonance in metal/phase-change materials/metal metamaterials

Tun Cao; Chenwei Wei; Robert E. Simpson; Lei Zhang; Martin J. Cryan

doi:10.1364/OME.4.001775

Fast tuning of Fano resonance in metal/phase-change materials/metal metamaterials

Tun Cao^*, Chenwei Wei, Robert E. Simpson, Lei Zhang, Martin J. Cryan

^*Corresponding author for this work

Research output: Contribution to journal › Article (Academic Journal) › peer-review

21 Citations (Scopus)

Abstract

We propose fast tuning of a Fano resonance (FR) in a three dimensional metamaterial (MM). The MM consists of an elliptical nanohole array (ENA) embedded through a metal/ phase-change material (PCM)/metal multilayer. The results show that the interference between the electric and magnetic resonances can be significantly enhanced when the elliptical nanoholes occupy the sites of a rectangular lattice, thus providing a FR with a higher value quality factor (Q) compared to the ENA with a square lattice. By switching the PCM (Ge₂Sb₂Te₅) between its amorphous and crystalline states, the FR peak can be red-shifted by up to 42%. The FR can be tuned with a ultra low energy mid-infrared laser pulse of 0.38 ns duration and an intensity of 3.2μW/μm².

Original language	English
Pages (from-to)	1775-1786
Number of pages	12
Journal	Optical Materials Express
Volume	4
Issue number	9
DOIs	https://doi.org/10.1364/OME.4.001775
Publication status	Published - 2014

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Photonics and Quantum

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title = "Fast tuning of Fano resonance in metal/phase-change materials/metal metamaterials",

abstract = "We propose fast tuning of a Fano resonance (FR) in a three dimensional metamaterial (MM). The MM consists of an elliptical nanohole array (ENA) embedded through a metal/ phase-change material (PCM)/metal multilayer. The results show that the interference between the electric and magnetic resonances can be significantly enhanced when the elliptical nanoholes occupy the sites of a rectangular lattice, thus providing a FR with a higher value quality factor (Q) compared to the ENA with a square lattice. By switching the PCM (Ge2Sb2Te5) between its amorphous and crystalline states, the FR peak can be red-shifted by up to 42%. The FR can be tuned with a ultra low energy mid-infrared laser pulse of 0.38 ns duration and an intensity of 3.2μW/μm2.",

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year = "2014",

doi = "10.1364/OME.4.001775",

language = "English",

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pages = "1775--1786",

journal = "Optical Materials Express",

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T1 - Fast tuning of Fano resonance in metal/phase-change materials/metal metamaterials

AU - Cao, Tun

AU - Wei, Chenwei

AU - Simpson, Robert E.

AU - Zhang, Lei

AU - Cryan, Martin J.

PY - 2014

Y1 - 2014

N2 - We propose fast tuning of a Fano resonance (FR) in a three dimensional metamaterial (MM). The MM consists of an elliptical nanohole array (ENA) embedded through a metal/ phase-change material (PCM)/metal multilayer. The results show that the interference between the electric and magnetic resonances can be significantly enhanced when the elliptical nanoholes occupy the sites of a rectangular lattice, thus providing a FR with a higher value quality factor (Q) compared to the ENA with a square lattice. By switching the PCM (Ge2Sb2Te5) between its amorphous and crystalline states, the FR peak can be red-shifted by up to 42%. The FR can be tuned with a ultra low energy mid-infrared laser pulse of 0.38 ns duration and an intensity of 3.2μW/μm2.

AB - We propose fast tuning of a Fano resonance (FR) in a three dimensional metamaterial (MM). The MM consists of an elliptical nanohole array (ENA) embedded through a metal/ phase-change material (PCM)/metal multilayer. The results show that the interference between the electric and magnetic resonances can be significantly enhanced when the elliptical nanoholes occupy the sites of a rectangular lattice, thus providing a FR with a higher value quality factor (Q) compared to the ENA with a square lattice. By switching the PCM (Ge2Sb2Te5) between its amorphous and crystalline states, the FR peak can be red-shifted by up to 42%. The FR can be tuned with a ultra low energy mid-infrared laser pulse of 0.38 ns duration and an intensity of 3.2μW/μm2.

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DO - 10.1364/OME.4.001775

M3 - Article (Academic Journal)

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SN - 2159-3930

VL - 4

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EP - 1786

JO - Optical Materials Express

JF - Optical Materials Express

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ER -

Fast tuning of Fano resonance in metal/phase-change materials/metal metamaterials

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