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The integrated device maintains the focal position deviation within 10% of the designed focal length, with a focusing efficiency of approximately 40% over the operating band. This work provides a compact and scalable strategy for integrating nonlinear THz sources with dispersion-engineered wavefront manipulation, offering new opportunities for on-chip THz photonic systems, imaging, and spectroscopy.<\/jats:p>","DOI":"10.1364\/oe.613454","type":"journal-article","created":{"date-parts":[[2026,10,2]],"date-time":"2026-10-02T18:31:31Z","timestamp":1790965891000},"page":"38618","update-policy":"https:\/\/doi.org\/10.1364\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Monolithically integrated nonlinear-linear metasurface for Fano-resonance-enhanced terahertz generation and in situ broadband achromatic manipulation"],"prefix":"10.1364","volume":"34","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3766-8787","authenticated-orcid":true,"given":"Ming","family":"Zhang","sequence":"first","affiliation":[{"id":[{"id":"https:\/\/ror.org\/05h3pkk68","id-type":"ROR","asserted-by":"publisher"}]},{"name":"Hebei Provincial Center for High-Resolution Earth Observation System Data Application Technology"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ruonan","family":"Li","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/05h3pkk68","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhenxue","family":"Sun","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/05h3pkk68","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qi","family":"Han","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/05h3pkk68","id-type":"ROR","asserted-by":"publisher"}]},{"name":"Hebei Provincial Center for High-Resolution Earth Observation System Data Application Technology"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lin","family":"Yang","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/05h3pkk68","id-type":"ROR","asserted-by":"publisher"}]},{"name":"Hebei Provincial Center for High-Resolution Earth Observation System Data Application Technology"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1130-1151","authenticated-orcid":true,"given":"Weimin","family":"Hou","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/05h3pkk68","id-type":"ROR","asserted-by":"publisher"}]},{"name":"Hebei Provincial Center for High-Resolution Earth Observation System Data Application Technology"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5698-0015","authenticated-orcid":true,"given":"Yuhang","family":"He","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/05h3pkk68","id-type":"ROR","asserted-by":"publisher"}]},{"name":"Hebei Provincial Center for High-Resolution Earth Observation System Data Application Technology"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Baozhu","family":"Wang","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/05h3pkk68","id-type":"ROR","asserted-by":"publisher"}]},{"name":"Hebei Provincial Center for High-Resolution Earth Observation System Data Application Technology"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"285","published-online":{"date-parts":[[2026,10,2]]},"reference":[{"key":"oe-34-20-38618-R1","doi-asserted-by":"publisher","first-page":"48","DOI":"10.1038\/s43586-023-00232-z","type":"journal-article","volume":"3","author":"Koch","year":"2023","journal-title":"Nat. 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