{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T13:02:59Z","timestamp":1785416579785,"version":"3.56.0"},"reference-count":19,"publisher":"Optica Publishing Group","issue":"14","license":[{"start":{"date-parts":[[2026,7,13]],"date-time":"2026-07-13T00:00:00Z","timestamp":1783900800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/doi.org\/10.1364\/OA_License_v2#VOR"},{"start":{"date-parts":[[2026,7,13]],"date-time":"2026-07-13T00:00:00Z","timestamp":1783900800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/opg.optica.org\/policies\/opg-tdm-policy.json"}],"funder":[{"DOI":"10.13039\/501100004761","name":"The Natural Science Foundation of Henan Province","doi-asserted-by":"crossref","award":["262300421799"],"award-info":[{"award-number":["262300421799"]}],"id":[{"id":"10.13039\/501100004761","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"crossref","award":["11704104"],"award-info":[{"award-number":["11704104"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"crossref"},{"id":"https:\/\/ror.org\/01h0zpd94","id-type":"ROR","asserted-by":"publisher"}]}],"content-domain":{"domain":["opg.optica.org"],"crossmark-restriction":false},"short-container-title":["Opt. Lett."],"published-print":{"date-parts":[[2026,7,15]]},"abstract":"<jats:p>\n                    Nonradiative bound states in the continuum (BICs) have emerged as a powerful paradigm for subwavelength field localization and boosted light\u2013matter interactions. However, conventional BICs sustain ultrahigh\n                    <jats:italic>Q<\/jats:italic>\n                    -factors only within an extremely narrow spectral window. Here, we introduce lattice perturbations into moir\u00e9 photonic crystal slabs and realize ultrahigh-\n                    <jats:italic>Q<\/jats:italic>\n                    BICs simultaneously over broad wavelength and wavevector ranges via lattice-perturbation-induced Brillouin zone folding. In the perturbed superlattice, the symmetry and effective refractive index of the supercell independently govern the wide wavevector distribution of\n                    <jats:italic>Q<\/jats:italic>\n                    -factors and the bandwidth of BICs, respectively. Notably, we obtain\n                    <jats:italic>quasi<\/jats:italic>\n                    -BICs with\n                    <jats:italic>Q<\/jats:italic>\n                    factors exceeding 5.9 \u00d7 10\n                    <jats:sup>8<\/jats:sup>\n                    across the full momentum space and a bandwidth of 393\u2009nm. Our work provides a general strategy for designing broadband and low-loss optical devices.\n                  <\/jats:p>","DOI":"10.1364\/ol.603075","type":"journal-article","created":{"date-parts":[[2026,6,24]],"date-time":"2026-06-24T18:00:08Z","timestamp":1782324008000},"page":"3996","update-policy":"https:\/\/doi.org\/10.1364\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Brillouin zone folding enabled broadband quasi-bound states in the continuum in lattice-perturbed moir\u00e9 photonic crystal slabs"],"prefix":"10.1364","volume":"51","author":[{"given":"Jun","family":"Zhang","sequence":"first","affiliation":[{"id":[{"id":"https:\/\/ror.org\/00s13br28","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiangyue","family":"Ma","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/00s13br28","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jiale","family":"Kan","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/00s13br28","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rongkun","family":"Xie","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/00s13br28","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Huayu","family":"Wang","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/00s13br28","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5910-6411","authenticated-orcid":true,"given":"Hai","family":"Lu","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/00s13br28","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yanke","family":"Li","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/00s13br28","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chunyu","family":"Deng","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/00s13br28","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1896-8864","authenticated-orcid":true,"given":"Yufang","family":"Liu","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/00s13br28","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kun","family":"Yu","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/00s13br28","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"285","published-online":{"date-parts":[[2026,7,13]]},"reference":[{"key":"ol-51-14-3996-R1","doi-asserted-by":"publisher","first-page":"16048","DOI":"10.1038\/natrevmats.2016.48","type":"journal-article","volume":"1","author":"Hsu","year":"2016","journal-title":"Nat. Rev. Mater."},{"key":"ol-51-14-3996-R2","doi-asserted-by":"publisher","first-page":"494","DOI":"10.3367\/UFNe.2021.12.039120","type":"journal-article","volume":"66","author":"Koshelev","year":"2023","journal-title":"Phys. Usp."},{"key":"ol-51-14-3996-R3","doi-asserted-by":"publisher","first-page":"2001469","DOI":"10.1002\/adom.202001469","type":"journal-article","volume":"9","author":"Azzam","year":"2021","journal-title":"Adv. Opt. Mater."},{"key":"ol-51-14-3996-R4","doi-asserted-by":"publisher","first-page":"3257","DOI":"10.1515\/nanoph-2023-0156","type":"journal-article","volume":"12","author":"Tang","year":"2023","journal-title":"Nanophotonics"},{"key":"ol-51-14-3996-R5","doi-asserted-by":"publisher","first-page":"255","DOI":"10.1038\/s41377-026-02355-w","type":"journal-article","volume":"15","author":"Peng","year":"2026","journal-title":"Light Sci. 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All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved.","name":"copyright","label":"Copyright"}]}}