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Opt."],"published-print":{"date-parts":[[2025,10,20]]},"abstract":"<jats:p>\n                    We present a robust and compact hybrid micro-integrated ECDL-MOPA laser\n\t\t\t\t\tmodule developed for quantum technology applications. The laser module\n\t\t\t\t\toperates at a wavelength of 767\u00a0nm with a PM fiber-coupled output\n\t\t\t\t\tpower of up to 360\u00a0mW. The module\u2019s dimensions and mass are 139\u00d780\u00d733mm\n                    <jats:sup>3<\/jats:sup>\n                    and 800\u00a0g, respectively. We\n\t\t\t\t\tdemonstrate a mode-hop-free frequency tuning range of 22\u00a0GHz using a\n\t\t\t\t\tcontrol loop that derives its error signal from the spectroscopy of\n\t\t\t\t\tthe frequency-selective element. This tuning range can be extended\n\t\t\t\t\tbeyond 100\u00a0GHz by implementing a cascaded control loop. The\n\t\t\t\t\tfree-running laser features a technical linewidth of approximately\n\t\t\t\t\t165\u00a0kHz at 1\u00a0ms and a minimum overlapping Allan deviation of\n                    <jats:italic>\u03c3<\/jats:italic>\n                    (\n                    <jats:italic>\u03c4<\/jats:italic>\n                    =6s)=6\u22c510\n                    <jats:sup>\u221210<\/jats:sup>\n                    . A reduction of the frequency drift\n\t\t\t\t\tby up to one order of magnitude [i.e.,\u00a0from\n                    <jats:italic>\u03c3<\/jats:italic>\n                    (\n                    <jats:italic>\u03c4<\/jats:italic>\n                    =10\n                    <jats:sup>5<\/jats:sup>\n                    s)=10\n                    <jats:sup>\u22127<\/jats:sup>\n                    to\n                    <jats:italic>\u03c3<\/jats:italic>\n                    (\n                    <jats:italic>\u03c4<\/jats:italic>\n                    =10\n                    <jats:sup>5<\/jats:sup>\n                    s)=7\u22c510\n                    <jats:sup>\u22129<\/jats:sup>\n                    ] was achieved at averaging times\n\t\t\t\t\texceeding 500\u00a0s by stabilizing the laser to its internal volume\n\t\t\t\t\tholographic Bragg grating.\n                  <\/jats:p>","DOI":"10.1364\/ao.571474","type":"journal-article","created":{"date-parts":[[2025,9,23]],"date-time":"2025-09-23T14:00:09Z","timestamp":1758636009000},"page":"9049","update-policy":"https:\/\/doi.org\/10.1364\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Micro-integrated diode laser modules enabling mode-hop-free tuning and long-term frequency stabilization"],"prefix":"10.1364","volume":"64","author":[{"ORCID":"https:\/\/orcid.org\/0009-0007-2940-3822","authenticated-orcid":true,"given":"Janpeter","family":"Hirsch","sequence":"first","affiliation":[{"id":[{"id":"https:\/\/ror.org\/02be22443","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Martin","family":"G\u00e4rtner","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/02be22443","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7183-7439","authenticated-orcid":true,"given":"Nora","family":"Goossen-Schmidt","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/02be22443","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sriram","family":"Hariharan","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/02be22443","id-type":"ROR","asserted-by":"publisher"}]},{"name":"eleQtron GmbH"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Simon","family":"Kubitza","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/02be22443","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tamukanashe","family":"Musengezi","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/02be22443","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8666-9922","authenticated-orcid":true,"given":"Max","family":"Schiemangk","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/02be22443","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christoph","family":"St\u00f6lmacker","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/02be22443","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christoph","family":"Tyborski","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/02be22443","id-type":"ROR","asserted-by":"publisher"}]},{"name":"CryLaS Crystal Laser Systems GmbH"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andreas","family":"Wicht","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/02be22443","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"285","published-online":{"date-parts":[[2025,10,14]]},"reference":[{"key":"ao-64-30-9049-R1","doi-asserted-by":"publisher","first-page":"474","DOI":"10.1038\/ncomms1479","type":"journal-article","volume":"2","author":"Geiger","year":"2011","journal-title":"Nat. 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