A four-state programmable mid-infrared band-stop filter exploiting a Ge2Sb2Te5 film and VO2 nanoparticles

Yun Meng; Dan Li; Chong Zhang; Yang Wang; Robert E. Simpson; Yi Long

doi:10.1063/5.0058384

A four-state programmable mid-infrared band-stop filter exploiting a Ge₂Sb₂Te₅ film and VO₂ nanoparticles

Yun Meng
, Dan Li
, Chong Zhang
, Yang Wang
, Robert E. Simpson^*
, Yi Long

^*Corresponding author for this work

Electronic, Electrical and Systems Engineering

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

1 Citation (Scopus)

Abstract

We designed and demonstrated a four-state programmable mid-infrared band-stop absorber that exploits two different phase-change materials. This programmability is possible by exploiting Fabry-Pérot resonances in a Ge₂Sb₂Te₅ film and vanadium dioxide nanoparticles' (VO₂ NPs) dual layer. The reflectivity trough can be tuned to four different infrared (IR) wavelengths from 1906 to 2960=nm by heating the structure to different temperatures. The near-perfect absorber is reconfigurable, lithography-free, industrially scalable, polarization-insensitive, and omnidirectional. Our strategy opens a path for programmable infrared photonics.

Original language	English
Article number	141109
Number of pages	6
Journal	Applied Physics Letters
Volume	119
Issue number	14
DOIs	https://doi.org/10.1063/5.0058384
Publication status	Published - 4 Oct 2021

Bibliographical note

Funding Information:
We thank Joel Yang for the fruitful discussions. This work was supported by the National Research Foundation, Prime Minister’s Office, Singapore under its Campus for Research Excellence and Technological Enterprise (CREATE) program and Singapore Ministry of Education (MOE) Academic Research Fund Tier 1 RG103/19 and RG86/20. R.E.S. acknowledges support granted for the Nanospatial Light Modulators for Next-Gen Display Technologies (NSLM) project (A-Star AME Grant No. A18A7b0058).

Publisher Copyright:
© 2021 Author(s).

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

Access to Document

10.1063/5.0058384

Cite this

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title = "A four-state programmable mid-infrared band-stop filter exploiting a Ge2Sb2Te5 film and VO2 nanoparticles",

abstract = "We designed and demonstrated a four-state programmable mid-infrared band-stop absorber that exploits two different phase-change materials. This programmability is possible by exploiting Fabry-P{\'e}rot resonances in a Ge2Sb2Te5 film and vanadium dioxide nanoparticles' (VO2 NPs) dual layer. The reflectivity trough can be tuned to four different infrared (IR) wavelengths from 1906 to 2960=nm by heating the structure to different temperatures. The near-perfect absorber is reconfigurable, lithography-free, industrially scalable, polarization-insensitive, and omnidirectional. Our strategy opens a path for programmable infrared photonics.",

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AU - Long, Yi

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AB - We designed and demonstrated a four-state programmable mid-infrared band-stop absorber that exploits two different phase-change materials. This programmability is possible by exploiting Fabry-Pérot resonances in a Ge2Sb2Te5 film and vanadium dioxide nanoparticles' (VO2 NPs) dual layer. The reflectivity trough can be tuned to four different infrared (IR) wavelengths from 1906 to 2960=nm by heating the structure to different temperatures. The near-perfect absorber is reconfigurable, lithography-free, industrially scalable, polarization-insensitive, and omnidirectional. Our strategy opens a path for programmable infrared photonics.

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