{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T12:12:32Z","timestamp":1785413552538,"version":"3.56.0"},"reference-count":15,"publisher":"Optica Publishing Group","issue":"13","license":[{"start":{"date-parts":[[2026,6,30]],"date-time":"2026-06-30T00:00:00Z","timestamp":1782777600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/doi.org\/10.1364\/OA_License_v2#VOR"},{"start":{"date-parts":[[2026,6,30]],"date-time":"2026-06-30T00:00:00Z","timestamp":1782777600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/opg.optica.org\/policies\/opg-tdm-policy.json"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"crossref","award":["U2241226"],"award-info":[{"award-number":["U2241226"]}],"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":[[2026,7,1]]},"abstract":"<jats:p>\n                    A quasi-bound state in the continuum (BIC) near-perfect absorption meta-surface for the deep ultraviolet (DUV) band, which is composed of a solid substrate fused silica\/Al\/SiO\n                    <jats:sub>2<\/jats:sub>\n                    \/HfO\n                    <jats:sub>2<\/jats:sub>\n                    multilayer structure, is proposed and numerically validated. The device exhibits an iso-spectral dual-Q response where the resonant wavelength remains nearly constant across all polarization angles, while the Q-factor gradually decreases with increasing polarization angle, ranging from ~140 to ~410 in the DUV band. It enables near-perfect absorption with tunable resonant peaks in the 240\u2013280\u2009nm solar-blind region. The underlying leakage channels and quasi-BIC characteristics are revealed by fitting with the temporal coupled-mode theory, combined with multipole decomposition analysis and eigenmode\/band structure calculations. By using the iso-spectral dual-Q feature, we further propose a ratio-based health factor that can be used for spectrometer-free spectral purity detection. Fabrication tolerance analysis and empirical scaling formulas for rough design in the solar-blind band are also provided.\n                  <\/jats:p>","DOI":"10.1364\/ol.599678","type":"journal-article","created":{"date-parts":[[2026,6,15]],"date-time":"2026-06-15T11:00:14Z","timestamp":1781521214000},"page":"3741","update-policy":"https:\/\/doi.org\/10.1364\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Self-referenced spectral-purity sensing enabled by iso-spectral dual Q-factor quasi-BIC DUV absorber"],"prefix":"10.1364","volume":"51","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8599-5307","authenticated-orcid":true,"given":"Zefan","family":"Lin","sequence":"first","affiliation":[{"name":"Beijing Institute of Technology"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Guoguo","family":"Kang","sequence":"additional","affiliation":[{"name":"Beijing Institute of Technology"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1526-6712","authenticated-orcid":true,"given":"Lingxue","family":"Wang","sequence":"additional","affiliation":[{"name":"Beijing Institute of Technology"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3998-5989","authenticated-orcid":true,"given":"Dezhi","family":"Zheng","sequence":"additional","affiliation":[{"name":"Beijing Institute of Technology"},{"name":"State Key Laboratory of Environment Characteristics and Effects for Near-space"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"285","published-online":{"date-parts":[[2026,6,30]]},"reference":[{"key":"ol-51-13-3741-R1","doi-asserted-by":"publisher","first-page":"1958","DOI":"10.1109\/LED.2025.3602574","type":"journal-article","volume":"46","author":"Wang","year":"2025","journal-title":"IEEE Electron Device Lett."},{"key":"ol-51-13-3741-R2","doi-asserted-by":"publisher","first-page":"7456","DOI":"10.1364\/OL.581191","type":"journal-article","volume":"50","author":"Hirosawa","year":"2025","journal-title":"Opt. Lett."},{"key":"ol-51-13-3741-R3","doi-asserted-by":"publisher","first-page":"484","DOI":"10.1364\/OL.585441","type":"journal-article","volume":"51","author":"Cheng","year":"2026","journal-title":"Opt. Lett."},{"key":"ol-51-13-3741-R4","doi-asserted-by":"publisher","first-page":"94","DOI":"10.1038\/s41377-021-00527-4","type":"journal-article","volume":"10","author":"Cai","year":"2021","journal-title":"Light Sci. Appl."},{"key":"ol-51-13-3741-R5","doi-asserted-by":"publisher","first-page":"10972","DOI":"10.1039\/D5TC00364D","type":"journal-article","volume":"13","author":"Zhang","year":"2025","journal-title":"J. Mater. Chem. C"},{"key":"ol-51-13-3741-R6","doi-asserted-by":"publisher","first-page":"409","DOI":"10.1021\/acsphotonics.5c00691","type":"journal-article","volume":"12","author":"Zhao","year":"2025","journal-title":"ACS Photonics"},{"key":"ol-51-13-3741-R7","doi-asserted-by":"publisher","first-page":"173389","DOI":"10.1016\/j.jmmm.2025.173389","type":"journal-article","volume":"630","author":"Chen","year":"2025","journal-title":"J. Magn. Magn. Mater."},{"key":"ol-51-13-3741-R8","doi-asserted-by":"publisher","first-page":"108729","DOI":"10.1016\/j.optlastec.2022.108729","type":"journal-article","volume":"157","author":"Tian","year":"2023","journal-title":"Opt. Laser Technol."},{"key":"ol-51-13-3741-R9","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-51-13-3741-R10","doi-asserted-by":"publisher","first-page":"105","DOI":"10.1364\/OL.541553","type":"journal-article","volume":"50","author":"Huang","year":"2025","journal-title":"Opt. Lett."},{"key":"ol-51-13-3741-R11","doi-asserted-by":"publisher","first-page":"2955","DOI":"10.1021\/acsphotonics.4c01960","type":"journal-article","volume":"12","author":"Shen","year":"2025","journal-title":"ACS Photon."},{"key":"ol-51-13-3741-R12","doi-asserted-by":"publisher","first-page":"5240","DOI":"10.1364\/OL.533967","type":"journal-article","volume":"49","author":"Huang","year":"2024","journal-title":"Opt. Lett."},{"key":"ol-51-13-3741-R13","doi-asserted-by":"publisher","first-page":"569","DOI":"10.1364\/josaa.20.000569","type":"journal-article","volume":"20","author":"Fan","year":"2003","journal-title":"J. Opt. Soc. Am. A"},{"key":"ol-51-13-3741-R14","doi-asserted-by":"publisher","first-page":"1510","DOI":"10.1126\/science.1197172","type":"journal-article","volume":"330","author":"Kaelberer","year":"2010","journal-title":"Science"},{"key":"ol-51-13-3741-R15","doi-asserted-by":"publisher","first-page":"111","DOI":"10.1111\/j.2517-6161.1974.tb00994.x","type":"journal-article","volume":"36","author":"Stone","year":"1974","journal-title":"J. R. Stat. Soc. Ser. B Stat. Methodol."}],"container-title":["Optics Letters"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/opg.optica.org\/viewmedia.cfm?URI=ol-51-13-3741&seq=0","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,6,30]],"date-time":"2026-06-30T18:23:31Z","timestamp":1782843811000},"score":1,"resource":{"primary":{"URL":"https:\/\/opg.optica.org\/abstract.cfm?URI=ol-51-13-3741"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,6,30]]},"references-count":15,"journal-issue":{"issue":"13","published-online":{"date-parts":[[2026]]},"published-print":{"date-parts":[[2026]]}},"URL":"https:\/\/doi.org\/10.1364\/ol.599678","relation":{},"ISSN":["0146-9592","1539-4794"],"issn-type":[{"value":"0146-9592","type":"print"},{"value":"1539-4794","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,6,30]]},"assertion":[{"value":"Optica Publishing Group","name":"publisher","label":"This article is maintained by"},{"value":"https:\/\/doi.org\/10.1364\/OL.599678","name":"articlelink","label":"Crossref DOI link to publisher maintained version"},{"value":"letter","name":"content_type","label":"Article type"},{"value":"Screened by Similarity Check","name":"cross_check","label":"Similarity check"},{"value":"Yes","order":0,"name":"peer_reviewed","label":"Peer reviewed","group":{"name":"peer_review","label":"Peer review"}},{"value":"Single blind","order":1,"name":"review_process","label":"Review process","group":{"name":"peer_review","label":"Peer review"}},{"value":"23 March 2026","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"12 June 2026","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"30 June 2026","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}},{"value":"\u00a9 2026 Optica Publishing Group. All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved.","name":"copyright","label":"Copyright"}]}}