Flat-band localization and self-collimation of light in photonic crystals
We investigate the optical properties of a photonic crystal (PC) composed of a quasi-one-dimensional flat-band lattice array through finite-difference time-domain simulations. The photonic bands contain flat bands (FBs) at specific frequencies, which correspond to compact localized states as a conse...
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| Veröffentlicht in: | Scientific reports 2019-02, Vol.9 (1), p.2862-2862, Article 2862 |
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| creator | Myoung, Nojoon Park, Hee Chul Ramachandran, Ajith Lidorikis, Elefterios Ryu, Jung-Wan |
| description | We investigate the optical properties of a photonic crystal (PC) composed of a quasi-one-dimensional flat-band lattice array through finite-difference time-domain simulations. The photonic bands contain flat bands (FBs) at specific frequencies, which correspond to compact localized states as a consequence of destructive interference. The FBs are shown to be nondispersive along the Г →
X
line, prohibiting optical transmission with incident light in
x
direction. On the other hand, the photonic band for the FB frequency is found to be dispersive along the Г →
Y
line, resulting in nonzero optical transmission. Such anisotropic optical response of the PC due to the FB localization of light in a single direction only results in a self-collimation of light propagation throughout the PC at the FB frequency. |
| doi_str_mv | 10.1038/s41598-019-39471-0 |
| format | Article |
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X
line, prohibiting optical transmission with incident light in
x
direction. On the other hand, the photonic band for the FB frequency is found to be dispersive along the Г →
Y
line, resulting in nonzero optical transmission. Such anisotropic optical response of the PC due to the FB localization of light in a single direction only results in a self-collimation of light propagation throughout the PC at the FB frequency.</description><identifier>ISSN: 2045-2322</identifier><identifier>EISSN: 2045-2322</identifier><identifier>DOI: 10.1038/s41598-019-39471-0</identifier><identifier>PMID: 30814629</identifier><language>eng</language><publisher>London: Nature Publishing Group UK</publisher><subject>639/624/399/1022 ; 639/766/400/1021 ; Crystals ; Humanities and Social Sciences ; Localization ; multidisciplinary ; Optical properties ; Science ; Science (multidisciplinary)</subject><ispartof>Scientific reports, 2019-02, Vol.9 (1), p.2862-2862, Article 2862</ispartof><rights>The Author(s) 2019</rights><rights>This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c474t-6206366ebda45f8eecaca692ec0b63070a836791708ca2417d140e2bb2933c93</citedby><cites>FETCH-LOGICAL-c474t-6206366ebda45f8eecaca692ec0b63070a836791708ca2417d140e2bb2933c93</cites><orcidid>0000-0003-2344-5793 ; 0000-0003-2064-1481</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC6393537/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC6393537/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,727,780,784,864,885,27924,27925,41120,42189,51576,53791,53793</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/30814629$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Myoung, Nojoon</creatorcontrib><creatorcontrib>Park, Hee Chul</creatorcontrib><creatorcontrib>Ramachandran, Ajith</creatorcontrib><creatorcontrib>Lidorikis, Elefterios</creatorcontrib><creatorcontrib>Ryu, Jung-Wan</creatorcontrib><title>Flat-band localization and self-collimation of light in photonic crystals</title><title>Scientific reports</title><addtitle>Sci Rep</addtitle><addtitle>Sci Rep</addtitle><description>We investigate the optical properties of a photonic crystal (PC) composed of a quasi-one-dimensional flat-band lattice array through finite-difference time-domain simulations. The photonic bands contain flat bands (FBs) at specific frequencies, which correspond to compact localized states as a consequence of destructive interference. The FBs are shown to be nondispersive along the Г →
X
line, prohibiting optical transmission with incident light in
x
direction. On the other hand, the photonic band for the FB frequency is found to be dispersive along the Г →
Y
line, resulting in nonzero optical transmission. 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The photonic bands contain flat bands (FBs) at specific frequencies, which correspond to compact localized states as a consequence of destructive interference. The FBs are shown to be nondispersive along the Г →
X
line, prohibiting optical transmission with incident light in
x
direction. On the other hand, the photonic band for the FB frequency is found to be dispersive along the Г →
Y
line, resulting in nonzero optical transmission. Such anisotropic optical response of the PC due to the FB localization of light in a single direction only results in a self-collimation of light propagation throughout the PC at the FB frequency.</abstract><cop>London</cop><pub>Nature Publishing Group UK</pub><pmid>30814629</pmid><doi>10.1038/s41598-019-39471-0</doi><tpages>1</tpages><orcidid>https://orcid.org/0000-0003-2344-5793</orcidid><orcidid>https://orcid.org/0000-0003-2064-1481</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | 639/624/399/1022 639/766/400/1021 Crystals Humanities and Social Sciences Localization multidisciplinary Optical properties Science Science (multidisciplinary) |
| title | Flat-band localization and self-collimation of light in photonic crystals |
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