Ge2Sb2Te5-based, ultrathin, all-dielectric tunable mid-wavelength infrared perfect absorber

Roy Avrahamy; Amiel A. Ishaaya; Mark Auslender

Ge₂Sb₂Te₅-based, ultrathin, all-dielectric tunable mid-wavelength infrared perfect absorber

Roy Avrahamy, Amiel A. Ishaaya, Mark Auslender

Department of Electrical & Computer Engineering

Research output: Contribution to journal › Conference article › peer-review

Abstract

GST-225 (Ge₂Sb₂Te₅) phase change material was recently experimentally reported to exhibit measurable photoconductivity, a well-defined bandgap, and reconfigurable continuous partial crystallization. Sequentially, here we propose an ultrathin, all-dielectric, metamaterial-design based on an asymmetrical optical micro-/nanocavity, enclosing a 10 nm thick GST-225 photoactive layer, inversely optimized for perfect tunable absorption in the mid-wavelength infrared. The perfect absorption, solely in GST-225, can be spectrally[1]tuned actively (thermally/electrically/optically) by varying the crystallinity, and geometrically using the design parameters, which is highly application beneficial.

Original language	English
Pages (from-to)	928-929
Number of pages	2
Journal	International Conference on Metamaterials, Photonic Crystals and Plasmonics
State	Published - 1 Jan 2021
Event	11th International Conference on Metamaterials, Photonic Crystals and Plasmonics, META 2021 - Warsaw, Poland Duration: 20 Jul 2021 → 23 Jul 2021

ASJC Scopus subject areas

Electrical and Electronic Engineering
Materials Science (miscellaneous)
Electronic, Optical and Magnetic Materials
Materials Chemistry

Cite this

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title = "Ge2Sb2Te5-based, ultrathin, all-dielectric tunable mid-wavelength infrared perfect absorber",

abstract = "GST-225 (Ge2Sb2Te5) phase change material was recently experimentally reported to exhibit measurable photoconductivity, a well-defined bandgap, and reconfigurable continuous partial crystallization. Sequentially, here we propose an ultrathin, all-dielectric, metamaterial-design based on an asymmetrical optical micro-/nanocavity, enclosing a 10 nm thick GST-225 photoactive layer, inversely optimized for perfect tunable absorption in the mid-wavelength infrared. The perfect absorption, solely in GST-225, can be spectrally[1]tuned actively (thermally/electrically/optically) by varying the crystallinity, and geometrically using the design parameters, which is highly application beneficial.",

author = "Roy Avrahamy and Ishaaya, {Amiel A.} and Mark Auslender",

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T1 - Ge2Sb2Te5-based, ultrathin, all-dielectric tunable mid-wavelength infrared perfect absorber

AU - Avrahamy, Roy

AU - Ishaaya, Amiel A.

AU - Auslender, Mark

PY - 2021/1/1

Y1 - 2021/1/1

N2 - GST-225 (Ge2Sb2Te5) phase change material was recently experimentally reported to exhibit measurable photoconductivity, a well-defined bandgap, and reconfigurable continuous partial crystallization. Sequentially, here we propose an ultrathin, all-dielectric, metamaterial-design based on an asymmetrical optical micro-/nanocavity, enclosing a 10 nm thick GST-225 photoactive layer, inversely optimized for perfect tunable absorption in the mid-wavelength infrared. The perfect absorption, solely in GST-225, can be spectrally[1]tuned actively (thermally/electrically/optically) by varying the crystallinity, and geometrically using the design parameters, which is highly application beneficial.

AB - GST-225 (Ge2Sb2Te5) phase change material was recently experimentally reported to exhibit measurable photoconductivity, a well-defined bandgap, and reconfigurable continuous partial crystallization. Sequentially, here we propose an ultrathin, all-dielectric, metamaterial-design based on an asymmetrical optical micro-/nanocavity, enclosing a 10 nm thick GST-225 photoactive layer, inversely optimized for perfect tunable absorption in the mid-wavelength infrared. The perfect absorption, solely in GST-225, can be spectrally[1]tuned actively (thermally/electrically/optically) by varying the crystallinity, and geometrically using the design parameters, which is highly application beneficial.

UR - http://www.scopus.com/inward/record.url?scp=85172478478&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:85172478478

SN - 2429-1390

SP - 928

EP - 929

JO - International Conference on Metamaterials, Photonic Crystals and Plasmonics

JF - International Conference on Metamaterials, Photonic Crystals and Plasmonics

T2 - 11th International Conference on Metamaterials, Photonic Crystals and Plasmonics, META 2021

Y2 - 20 July 2021 through 23 July 2021

ER -

Ge₂Sb₂Te₅-based, ultrathin, all-dielectric tunable mid-wavelength infrared perfect absorber

Abstract

ASJC Scopus subject areas

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