All-Dielectric Transreflective Angle-Insensitive Near-Infrared (NIR) Filter

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dc.citation.issue15
dc.citation.volume12
dc.contributor.authorShaukat A
dc.contributor.authorUmer R
dc.contributor.authorNoble F
dc.contributor.authorArif K
dc.coverage.spatialSwitzerland
dc.date.available2022-07-23
dc.date.available2022-07-18
dc.date.issued2022-08
dc.description(c) The Author/s
dc.description.abstractThis paper presents an all-dielectric, cascaded, multilayered, thin-film filter, allowing near-infrared filtration for spectral imaging applications. The proposed design is comprised of only eight layers of amorphous silicon (A-Si) and silicon nitride (Si₃N₄), successively deposited on a glass substrate. The finite difference time domain (FDTD) simulation results demonstrate a distinct peak in the near-infrared (NIR) region with transmission efficiency up to 70% and a full-width-at-half-maximum (FWHM) of 77 nm. The theoretical results are angle-insensitive up to 60⁰ and show polarization insensitivity in the transverse magnetic (TM) and transverse electric (TE) modes. The theoretical response, obtained with the help of spectroscopic ellipsometry (SE), is in good agreement with the experimental result. Likewise, the experimental results for polarization insensitivity and angle invariance of the thin films are in unison with the theoretical results, having an angle invariance up to 50⁰.
dc.description.publication-statusPublished online
dc.identifierhttps://www.ncbi.nlm.nih.gov/pubmed/35893505
dc.identifiernano12152537
dc.identifier.citationNanomaterials (Basel), 2022, 12 (15)
dc.identifier.doi10.3390/nano12152537
dc.identifier.elements-id454777
dc.identifier.harvestedMassey_Dark
dc.identifier.issn2079-4991
dc.languageeng
dc.publisherMDPI (Basel, Switzerland)
dc.relation.isPartOfNanomaterials (Basel)
dc.rightsCC BY 4.0
dc.subjectFDTD
dc.subjectNIR filter
dc.subjectangle invariance
dc.subjectspectroscopic ellipsometry
dc.subjectthin films
dc.subject.anzsrc0912 Materials Engineering
dc.subject.anzsrc1007 Nanotechnology
dc.titleAll-Dielectric Transreflective Angle-Insensitive Near-Infrared (NIR) Filter
dc.typeJournal article
pubs.notesNot known
pubs.organisational-group/Massey University
pubs.organisational-group/Massey University/College of Sciences
pubs.organisational-group/Massey University/College of Sciences/School of Food and Advanced Technology
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