{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,23]],"date-time":"2026-09-23T16:00:29Z","timestamp":1790179229516,"version":"4.1.0"},"reference-count":31,"publisher":"Optica Publishing Group","issue":"19","license":[{"start":{"date-parts":[[2026,9,23]],"date-time":"2026-09-23T00:00:00Z","timestamp":1790121600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/doi.org\/10.1364\/OA_License_v2#VOR"},{"start":{"date-parts":[[2026,9,23]],"date-time":"2026-09-23T00:00:00Z","timestamp":1790121600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/opg.optica.org\/policies\/opg-tdm-policy.json"}],"funder":[{"name":"National Natural Science Foundation of China","award":["12504503"],"award-info":[{"award-number":["12504503"]}],"id":[{"id":"https:\/\/ror.org\/01h0zpd94","id-type":"ROR","asserted-by":"publisher"}]},{"name":"National Natural Science Foundation of China","award":["12374395"],"award-info":[{"award-number":["12374395"]}],"id":[{"id":"https:\/\/ror.org\/01h0zpd94","id-type":"ROR","asserted-by":"publisher"}]},{"name":"Hebei Natural Science Foundation","award":["A2025110005"],"award-info":[{"award-number":["A2025110005"]}]}],"content-domain":{"domain":["opg.optica.org"],"crossmark-restriction":false},"short-container-title":["Opt. Lett."],"published-print":{"date-parts":[[2026,10,1]]},"abstract":"<jats:p>\n                    Compact multi-wavelength laser sources are essential for high-capacity optical communication, optical computing, and multi-channel sensing in integrated photonic circuits. Here, we demonstrate a low-threshold GaN-based multi-wavelength microcavity laser array by engineering cavity shapes with lateral nanoporous distributed Bragg reflectors (DBRs). Circular, hexagonal, and square microcavities exhibit distinct lasing wavelengths of 459, 444, and 428\u2009nm, covering a spectral span of 31\u2009nm, with corresponding lasing threshold average power densities of 0.43, 0.99, and 3.75\u2009W\/cm\n                    <jats:sup>2<\/jats:sup>\n                    , respectively. The wavelength variation originates from the shape-dependent cavity loss and gain spectrum evolution under different excitation conditions. Numerical simulations further reveal the influence of cavity shape on optical confinement and mode properties. Our findings establish a straightforward and effective strategy for realizing multi-wavelength GaN-based microcavity laser arrays without complex epitaxial regrowth, paving the way toward chip-scale visible photonic systems.\n                  <\/jats:p>","DOI":"10.1364\/ol.612312","type":"journal-article","created":{"date-parts":[[2026,9,8]],"date-time":"2026-09-08T12:00:10Z","timestamp":1788868810000},"page":"5454","update-policy":"https:\/\/doi.org\/10.1364\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Shape-engineered multi-wavelength lasing in GaN-based microcavity arrays with lateral nanoporous DBRs"],"prefix":"10.1364","volume":"51","author":[{"given":"Ting","family":"Wang","sequence":"first","affiliation":[{"id":[{"id":"https:\/\/ror.org\/00xsr9m91","id-type":"ROR","asserted-by":"publisher"}]},{"name":"Cangzhou Institute of Tiangong University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jian","family":"Gao","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/00xsr9m91","id-type":"ROR","asserted-by":"publisher"}]},{"name":"Cangzhou Institute of Tiangong University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jiaqi","family":"Shan","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/00xsr9m91","id-type":"ROR","asserted-by":"publisher"}]},{"name":"Cangzhou Institute of Tiangong University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaotian","family":"Ge","sequence":"additional","affiliation":[{"name":"Chinese Academy of Sciences"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jiawei","family":"Chen","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/00xsr9m91","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lixia","family":"Zhao","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/00xsr9m91","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"285","published-online":{"date-parts":[[2026,9,23]]},"reference":[{"key":"ol-51-19-5454-R1","doi-asserted-by":"publisher","first-page":"7004","DOI":"10.1038\/s41467-025-62267-y","type":"journal-article","volume":"16","author":"Lampert","year":"2025","journal-title":"Nat. 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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"}]}}