Reconfigurable near-IR metasurface based on Ge2Sb2Te5 phase-change material

Alexej V. Pogrebnyakov; Jeremy A. Bossard; Jeremiah P. Turpin; J. David Musgraves; Hee Jung Shin; Clara Riverobaleine; Nikolas Podraza; Kathleen A. Richardson; Douglas H. Werner; Theresa S. Mayer

doi:10.1364/OME.8.002264

Reconfigurable near-IR metasurface based on Ge₂Sb₂Te₅ phase-change material

Alexej V. Pogrebnyakov
, Jeremy A. Bossard
, Jeremiah P. Turpin
, J. David Musgraves
, Hee Jung Shin
, Clara Riverobaleine
, Nikolas Podraza
, Kathleen A. Richardson
, Douglas H. Werner
, Theresa S. Mayer

Electrical Engineering

Research output: Contribution to journal › Article › peer-review

83 Scopus citations

Abstract

A reconfigurable metasurface made of Ge₂Sb₂Te₅ phase-change material was experimentally demonstrated in the 1.55 μm wavelength range. A nanostructured Ge₂Sb₂Te₅ film on fused silica substrate was optimized to switch from highly transmissive (80%) to highly absorptive (76%) modes with a 7:1 contrast ratio in transmission independent of polarization, when thermally transformed from the amorphous to crystalline state. The metasurface was designed using a genetic algorithm optimizer linked with an efficient fullwave electromagnetic solver.

Original language	English (US)
Pages (from-to)	2264-2275
Number of pages	12
Journal	Optical Materials Express
Volume	8
Issue number	8
DOIs	https://doi.org/10.1364/OME.8.002264
State	Published - Aug 1 2018

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials

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10.1364/OME.8.002264

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title = "Reconfigurable near-IR metasurface based on Ge2Sb2Te5 phase-change material",

abstract = "A reconfigurable metasurface made of Ge2Sb2Te5 phase-change material was experimentally demonstrated in the 1.55 μm wavelength range. A nanostructured Ge2Sb2Te5 film on fused silica substrate was optimized to switch from highly transmissive (80\%) to highly absorptive (76\%) modes with a 7:1 contrast ratio in transmission independent of polarization, when thermally transformed from the amorphous to crystalline state. The metasurface was designed using a genetic algorithm optimizer linked with an efficient fullwave electromagnetic solver.",

author = "Pogrebnyakov, \{Alexej V.\} and Bossard, \{Jeremy A.\} and Turpin, \{Jeremiah P.\} and Musgraves, \{J. David\} and Shin, \{Hee Jung\} and Clara Riverobaleine and Nikolas Podraza and Richardson, \{Kathleen A.\} and Werner, \{Douglas H.\} and Mayer, \{Theresa S.\}",

note = "Publisher Copyright: {\textcopyright} 2018 Optical Society of America.",

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doi = "10.1364/OME.8.002264",

language = "English (US)",

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T1 - Reconfigurable near-IR metasurface based on Ge2Sb2Te5 phase-change material

AU - Pogrebnyakov, Alexej V.

AU - Bossard, Jeremy A.

AU - Turpin, Jeremiah P.

AU - Musgraves, J. David

AU - Shin, Hee Jung

AU - Riverobaleine, Clara

AU - Podraza, Nikolas

AU - Richardson, Kathleen A.

AU - Werner, Douglas H.

AU - Mayer, Theresa S.

PY - 2018/8/1

Y1 - 2018/8/1

N2 - A reconfigurable metasurface made of Ge2Sb2Te5 phase-change material was experimentally demonstrated in the 1.55 μm wavelength range. A nanostructured Ge2Sb2Te5 film on fused silica substrate was optimized to switch from highly transmissive (80%) to highly absorptive (76%) modes with a 7:1 contrast ratio in transmission independent of polarization, when thermally transformed from the amorphous to crystalline state. The metasurface was designed using a genetic algorithm optimizer linked with an efficient fullwave electromagnetic solver.

AB - A reconfigurable metasurface made of Ge2Sb2Te5 phase-change material was experimentally demonstrated in the 1.55 μm wavelength range. A nanostructured Ge2Sb2Te5 film on fused silica substrate was optimized to switch from highly transmissive (80%) to highly absorptive (76%) modes with a 7:1 contrast ratio in transmission independent of polarization, when thermally transformed from the amorphous to crystalline state. The metasurface was designed using a genetic algorithm optimizer linked with an efficient fullwave electromagnetic solver.

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JO - Optical Materials Express

JF - Optical Materials Express

IS - 8

ER -

Reconfigurable near-IR metasurface based on Ge₂Sb₂Te₅ phase-change material

Abstract

All Science Journal Classification (ASJC) codes

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