{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,22]],"date-time":"2026-09-22T19:04:24Z","timestamp":1790103864197,"version":"4.0.1"},"reference-count":29,"publisher":"Optica Publishing Group","issue":"20","license":[{"start":{"date-parts":[[2026,9,22]],"date-time":"2026-09-22T00:00:00Z","timestamp":1790035200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/doi.org\/10.1364\/OA_License_v2#VOR-OA"},{"start":{"date-parts":[[2026,9,22]],"date-time":"2026-09-22T00:00:00Z","timestamp":1790035200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/opg.optica.org\/policies\/opg-tdm-policy.json"}],"funder":[{"name":"Ministerio para la Transformaci\u00f3n Digital y de la Funci\u00f3n P\u00fablica","award":["TSI-069100-2023-0015"],"award-info":[{"award-number":["TSI-069100-2023-0015"]}],"id":[{"id":"https:\/\/ror.org\/01qh08519","id-type":"ROR","asserted-by":"publisher"}]},{"name":"Agencia Estatal de Investigaci\u00f3n","award":["PID2024-326 160573NB-I00"],"award-info":[{"award-number":["PID2024-326 160573NB-I00"]}],"id":[{"id":"https:\/\/ror.org\/003x0zc53","id-type":"ROR","asserted-by":"publisher"}]},{"name":"Agencia Estatal de Investigaci\u00f3n","award":["ID2022-138321NB-C21"],"award-info":[{"award-number":["ID2022-138321NB-C21"]}],"id":[{"id":"https:\/\/ror.org\/003x0zc53","id-type":"ROR","asserted-by":"publisher"}]},{"name":"Funda\u00e7\u00e3o para a Ci\u00eancia e Tecnologia","award":["LA\/P\/0037\/2020"],"award-info":[{"award-number":["LA\/P\/0037\/2020"]}],"id":[{"id":"https:\/\/ror.org\/00snfqn58","id-type":"ROR","asserted-by":"publisher"}]},{"name":"Funda\u00e7\u00e3o para a Ci\u00eancia e Tecnologia","award":["UID\/50025"],"award-info":[{"award-number":["UID\/50025"]}],"id":[{"id":"https:\/\/ror.org\/00snfqn58","id-type":"ROR","asserted-by":"publisher"}]}],"content-domain":{"domain":["opg.optica.org"],"crossmark-restriction":false},"short-container-title":["Opt. Express"],"published-print":{"date-parts":[[2026,10,5]]},"abstract":"<jats:p>Beam filamentation limits the beam quality of broad-area semiconductor lasers (BASLs), and effective mitigation strategies remain an open issue. We investigate the impact of spatial modulation of the injected current using a spatio-temporal traveling-wave model that describes the coupled longitudinal and transverse dynamics of the optical field and carrier density. The modulation is implemented as a two-dimensional current pattern, producing simultaneous variations of gain and refractive index compatible with structured electrodes. Transverse modulation alone stabilizes the near-field profile but introduces far-field side lobes associated with out-of-phase modes. The addition of longitudinal modulation modifies this behavior and can suppress these side lobes for modulation periods near Talbot-type resonance conditions. These effects persist, although reduced, in the presence of thermal refractive index variations. The results provide a realistic assessment of spatially structured current injection for beam shaping in BASLs and clarify its limitations and potential for practical implementations.<\/jats:p>","DOI":"10.1364\/oe.606104","type":"journal-article","created":{"date-parts":[[2026,8,14]],"date-time":"2026-08-14T09:13:46Z","timestamp":1786698826000},"page":"37114","update-policy":"https:\/\/doi.org\/10.1364\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Effect of transverse and longitudinal current modulation on beam quality in broad area semiconductor lasers"],"prefix":"10.1364","volume":"34","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2417-6743","authenticated-orcid":true,"given":"M.","family":"Fac\u00e3o","sequence":"first","affiliation":[{"id":[{"id":"https:\/\/ror.org\/03mb6wj31","id-type":"ROR","asserted-by":"publisher"}]},{"name":"Campus Universit\u00e1rio de Santiago"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"C.","family":"Oriach-Font","sequence":"additional","affiliation":[{"name":"Monocrom"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J. 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