{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,13]],"date-time":"2026-10-13T08:50:09Z","timestamp":1791881409829,"version":"4.3.4"},"reference-count":37,"publisher":"Wiley","issue":"19","license":[{"start":{"date-parts":[[2026,10,8]],"date-time":"2026-10-08T00:00:00Z","timestamp":1791417600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,10,8]],"date-time":"2026-10-08T00:00:00Z","timestamp":1791417600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/501100012166","name":"National Key Research and Development Program of China","doi-asserted-by":"publisher","award":["2023YFF0719200"],"award-info":[{"award-number":["2023YFF0719200"]}],"id":[{"id":"10.13039\/501100012166","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["12574241"],"award-info":[{"award-number":["12574241"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["62371019"],"award-info":[{"award-number":["62371019"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Nanophotonics"],"published-print":{"date-parts":[[2026,10,13]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>Terahertz (THz) technology exhibits enormous potential application in imaging and next\u2010generation communications. However, the lacking of compact broadband THz sources capable with focusing and wavefront manipulation capabilities remains a significant challenge for its practical application. To address this, we propose a design paradigm that combines a sparse\u2010aperture shared\u2010aperture architecture with a multispectral weighted intensity optimization method, enabling the direct construction of a Pt\/W binary\u2010phase metasurface on a spintronic terahertz emitter. The device has an overall aperture of 2\u00a0cm and features three groups of centrosymmetric sector\u2010shaped sub\u2010apertures, each group individually optimized for specific sub\u2010bands. Numerical results demonstrate that the device achieves broadband quasi\u2010achromatic focusing over the continuous 1.0\u20131.5\u00a0THz band, characterized by overlapping depth\u2010of\u2010focus ranges and stabilized focal\u2010spot intensity at a common design plane. The spectral intensity fluctuation is suppressed to below 33%. Meanwhile, at all representative frequencies, the edge preservation index remains above 0.68, verifying the robust broadband focusing performance. This work establishes a new paradigm for active terahertz metasurface design and provides a viable pathway toward compact, efficient, and quasi\u2010achromatic integrated photonic systems for advanced imaging and communication applications.<\/jats:p>","DOI":"10.1002\/nap2.70317","type":"journal-article","created":{"date-parts":[[2026,10,8]],"date-time":"2026-10-08T11:42:19Z","timestamp":1791459739000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Sparse\u2010Aperture Quasi\u2010Achromatic Spintronic Terahertz Emitter Enabled by Binary\u2010Phase Metasurface and Multi\u2010Spectral Intensity Optimization"],"prefix":"10.1002","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0009-0007-5135-4430","authenticated-orcid":false,"given":"Wenkai","family":"Qiu","sequence":"first","affiliation":[{"name":"State Key Laboratory of Spintronics Hangzhou International Innovation Institute Beihang University  Hangzhou China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yongshan","family":"Liu","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Spintronics Hangzhou International Innovation Institute Beihang University  Hangzhou China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yunqing","family":"Jiang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Spintronics Hangzhou International Innovation Institute Beihang University  Hangzhou China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7431-7527","authenticated-orcid":false,"given":"Yong","family":"Xu","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Spintronics Hangzhou International Innovation Institute Beihang University  Hangzhou China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4233-6966","authenticated-orcid":false,"given":"Sylvain","family":"Eimer","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Spintronics Hangzhou International Innovation Institute Beihang University  Hangzhou China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1274-5248","authenticated-orcid":false,"given":"Xiaoqiang","family":"Zhang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Spintronics Hangzhou International Innovation Institute Beihang University  Hangzhou China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8088-0404","authenticated-orcid":false,"given":"Weisheng","family":"Zhao","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Spintronics Hangzhou International Innovation Institute Beihang University  Hangzhou China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,10,8]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1038\/nphoton.2007.3"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41377\u2010023\u201001278\u20100"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1038\/nphoton.2016.65"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1364\/ol.476809"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1002\/adma.202208947"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41565\u2010017\u20100034\u20106"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1126\/science.1210713"},{"key":"e_1_2_8_9_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10762\u2010020\u201000677\u20103"},{"key":"e_1_2_8_10_1","doi-asserted-by":"publisher","DOI":"10.1002\/adfm.202512746"},{"key":"e_1_2_8_11_1","doi-asserted-by":"publisher","DOI":"10.1117\/1.ap.7.5.056004"},{"key":"e_1_2_8_12_1","doi-asserted-by":"publisher","DOI":"10.29026\/oes.2025.250007"},{"key":"e_1_2_8_13_1","doi-asserted-by":"publisher","DOI":"10.29026\/oea.2024.240075"},{"key":"e_1_2_8_14_1","doi-asserted-by":"publisher","DOI":"10.1364\/prj.487711"},{"key":"e_1_2_8_15_1","doi-asserted-by":"publisher","DOI":"10.1038\/nphoton.2016.91"},{"key":"e_1_2_8_16_1","doi-asserted-by":"publisher","DOI":"10.3788\/col202220.043201"},{"key":"e_1_2_8_17_1","doi-asserted-by":"publisher","DOI":"10.1038\/nnano.2013.43"},{"key":"e_1_2_8_18_1","doi-asserted-by":"publisher","DOI":"10.1063\/5.0080357"},{"key":"e_1_2_8_19_1","doi-asserted-by":"publisher","DOI":"10.3390\/nano13142037"},{"key":"e_1_2_8_20_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.optlastec.2023.110418"},{"key":"e_1_2_8_21_1","doi-asserted-by":"publisher","DOI":"10.1002\/adma.201704556"},{"key":"e_1_2_8_22_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467\u2010023\u201042268\u20105"},{"key":"e_1_2_8_23_1","doi-asserted-by":"publisher","DOI":"10.1126\/sciadv.1500396"},{"key":"e_1_2_8_24_1","doi-asserted-by":"publisher","DOI":"10.1002\/adom.202000842"},{"key":"e_1_2_8_25_1","article-title":"Large\u2010Aperture Polarization\u2010Independent Broadband Achromatic All\u2010Dielectric Metalens for Terahertz Focusing","author":"Jiang X. Q.","year":"2026","journal-title":"Advanced Science"},{"key":"e_1_2_8_26_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41377\u2010021\u201000497\u20107"},{"key":"e_1_2_8_27_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467\u2010024\u201055624\u2010w"},{"key":"e_1_2_8_28_1","doi-asserted-by":"publisher","DOI":"10.1364\/ol.554430"},{"key":"e_1_2_8_29_1","doi-asserted-by":"publisher","DOI":"10.1002\/nap2.70060"},{"key":"e_1_2_8_30_1","doi-asserted-by":"publisher","DOI":"10.1002\/adma.202404174"},{"key":"e_1_2_8_31_1","doi-asserted-by":"publisher","DOI":"10.1364\/optica.389404"},{"key":"e_1_2_8_32_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.optcom.2025.132239"},{"key":"e_1_2_8_33_1","doi-asserted-by":"publisher","DOI":"10.3390\/app12188972"},{"key":"e_1_2_8_34_1","doi-asserted-by":"publisher","DOI":"10.1364\/oe.570816"},{"key":"e_1_2_8_35_1","doi-asserted-by":"publisher","DOI":"10.1364\/ol.391429"},{"key":"e_1_2_8_36_1","doi-asserted-by":"publisher","DOI":"10.1109\/83.585239"},{"key":"e_1_2_8_37_1","doi-asserted-by":"publisher","DOI":"10.1002\/adom.202300899"},{"key":"e_1_2_8_38_1","doi-asserted-by":"publisher","DOI":"10.1021\/acsphotonics.5c01837"}],"container-title":["Nanophotonics"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/nap2.70317","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1002\/nap2.70317","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/nap2.70317","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,10,13]],"date-time":"2026-10-13T08:17:54Z","timestamp":1791879474000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/nap2.70317"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,10,8]]},"references-count":37,"journal-issue":{"issue":"19","published-print":{"date-parts":[[2026,10,13]]}},"alternative-id":["10.1002\/nap2.70317"],"URL":"https:\/\/doi.org\/10.1002\/nap2.70317","archive":["Portico"],"relation":{},"ISSN":["2192-8614","2192-8614"],"issn-type":[{"value":"2192-8614","type":"print"},{"value":"2192-8614","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,10,8]]},"assertion":[{"value":"2026-06-30","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-09-30","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-10-08","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}],"article-number":"e70317"}}