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Polarization-Controlled Broad Color Palette Based on an Ultrathin One-Dimensional Resonant Grating Structure

Koirala, Ishwor; Shrestha, Vivek Raj; Park, Chul-Soon; Lee, Sang-Shin; Choi, Duk-Yong

Description

Highly efficient polarization-tuned structural color filters, which are based on a one- dimensional resonant aluminum grating that is integrated with a silicon nitride waveguide, are proposed and demonstrated to feature a broad color palette. For such a metallic grating structure, transmissive color filtering is only feasible for the incident transverse-magnetic (TM) polarization due to its high reflection regarding the transverse-electric (TE) case; however, polarization-tuned customized...[Show more]

dc.contributor.authorKoirala, Ishwor
dc.contributor.authorShrestha, Vivek Raj
dc.contributor.authorPark, Chul-Soon
dc.contributor.authorLee, Sang-Shin
dc.contributor.authorChoi, Duk-Yong
dc.date.accessioned2017-03-24T00:52:06Z
dc.date.available2017-03-24T00:52:06Z
dc.identifier.issn2045-2322
dc.identifier.urihttp://hdl.handle.net/1885/113776
dc.description.abstractHighly efficient polarization-tuned structural color filters, which are based on a one- dimensional resonant aluminum grating that is integrated with a silicon nitride waveguide, are proposed and demonstrated to feature a broad color palette. For such a metallic grating structure, transmissive color filtering is only feasible for the incident transverse-magnetic (TM) polarization due to its high reflection regarding the transverse-electric (TE) case; however, polarization-tuned customized colors can be efficiently achieved by optimizing the structural parameters like the duty ratio of the metallic grating. For the fabricated color filters, the transmission peaks, which are imputed to the resonance between the incident light and the guided modes that are supported by the dielectric waveguide, provided efficiencies as high as 90% and 70% for the TM and TE polarizations, respectively, as intended. Through the tailoring of the polarization, a group of filters with different grating periods were successfully exploited to produce a broad color palette spanning the entire visible band. Lastly, a nanoscale alphabetic pattern featuring a flexible combination of colorations was practically constructed via an arrangement of horizontal and vertical gratings.
dc.description.sponsorshipThis work was supported by a National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (No. 2016R1A2B2010170). The work was partly supported by the Australian Research Council Future Fellowship (FT110100853, Dr. Duk-Yong Choi) and was performed in part at the ACT node of the Australian National Fabrication Facility.
dc.format.mimetypeapplication/pdf
dc.publisherNature Publishing Group
dc.rights© The Author(s) 2017. This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
dc.sourceScientific reports
dc.titlePolarization-Controlled Broad Color Palette Based on an Ultrathin One-Dimensional Resonant Grating Structure
dc.typeJournal article
local.identifier.citationvolume7
dc.date.issued2017-01-09
local.publisher.urlhttp://www.nature.com/
local.type.statusPublished Version
local.contributor.affiliationChoi, D., Laser Physics Centre, The Australian National University
dc.relationhttp://purl.org/au-research/grants/arc/FT110100853
local.identifier.essn2045-2322
local.bibliographicCitation.startpage40073
local.identifier.doi10.1038/srep40073
dcterms.accessRightsOpen Access
CollectionsANU Research Publications

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