10-GHz Ultrashort Optical pulse and Ultraflat Optical Comb Generation via a Semiconductor Mode-locked Laser

10-GHz Ultrashort Optical pulse and Ultraflat Optical Comb Generation via a Semiconductor Mode-locked Laser | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Article 10-GHz Ultrashort Optical pulse and Ultraflat Optical Comb Generation via a Semiconductor Mode-locked Laser Defan Sun, Yueying Niu, Fei Guo, Ruikang Zhang, Lingjuan Zhao, and 1 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-5433318/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract We report a 10-GHz ultrashort pulse and optical comb generation using a quantum well (QW) semiconductor mode-locked laser (SMLL). With a dilute waveguide design, ultrashort pulses with pulse widths as short as 726 fs were also obtained from a 10-GHz SMLL without any compression, and the shortest pulse width of 576 fs was achieved after pulse compression. Direct generation of a flat comb with a −3-dB bandwidth of 9.92 nm (>125 comb lines in a span of 1.24 THz) and a −20-dB bandwidth of 19.22 nm (>240 comb lines in a span of 2.4 THz) was obtained. A further comb span extension was obtained by pumping a highly nonlinear fiber (HNLF) via the SMLL. A −20-dB bandwidth of 89.4 nm and a usable comb span of over 110 nm were demonstrated. Physical sciences/Optics and photonics/Lasers leds and light sources/Mode locked lasers Physical sciences/Optics and photonics/Lasers leds and light sources/Semiconductor lasers Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-5433318","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":383223436,"identity":"6a3f4dba-5e7c-4fa8-9894-8d74350a0530","order_by":0,"name":"Defan Sun","email":"","orcid":"","institution":"Institute of Semiconductors","correspondingAuthor":false,"prefix":"","firstName":"Defan","middleName":"","lastName":"Sun","suffix":""},{"id":383223438,"identity":"d2c24e12-f9fb-46d7-9f9d-e2274e6514e1","order_by":1,"name":"Yueying Niu","email":"","orcid":"","institution":"Institute of Semiconductors","correspondingAuthor":false,"prefix":"","firstName":"Yueying","middleName":"","lastName":"Niu","suffix":""},{"id":383223439,"identity":"0ccde3fa-8c53-4907-b956-1c653ec1db27","order_by":2,"name":"Fei Guo","email":"","orcid":"","institution":"Institute of Semiconductors","correspondingAuthor":false,"prefix":"","firstName":"Fei","middleName":"","lastName":"Guo","suffix":""},{"id":383223441,"identity":"22babd5c-d043-456d-8b95-5bf4f77c135a","order_by":3,"name":"Ruikang Zhang","email":"","orcid":"","institution":"Institute of Semiconductors","correspondingAuthor":false,"prefix":"","firstName":"Ruikang","middleName":"","lastName":"Zhang","suffix":""},{"id":383223442,"identity":"02c67605-43fe-4ede-94a9-554db54f4c9c","order_by":4,"name":"Lingjuan Zhao","email":"","orcid":"","institution":"Institute of Semiconductors","correspondingAuthor":false,"prefix":"","firstName":"Lingjuan","middleName":"","lastName":"Zhao","suffix":""},{"id":383223443,"identity":"0c06738b-4e5c-4963-b66f-71c0eb08ee56","order_by":5,"name":"Dan Lu","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAsklEQVRIiWNgGAWjYBACPgYGAwaGCiCLmVgtbGAtZ0jWwthGisPYJJI3fi6cVyen287A+OEHg10eEVrSiqVnbjtsbHaYgVmyhyG5mAgtOQbSvNsOJG47zMAgzcBwILGBCC3Gv3nn1NUDtTD/JlaLmTRvA3MC0GFsRNrC86zMmufYYcNthxnbLHsMkglr4WdP3nybp6ZO3uz84cM3flTYEdaCBBgbwNE6CkbBKBgFo4AKAACewTLESQcFJAAAAABJRU5ErkJggg==","orcid":"","institution":"Institute of Semiconductors","correspondingAuthor":true,"prefix":"","firstName":"Dan","middleName":"","lastName":"Lu","suffix":""}],"badges":[],"createdAt":"2024-11-11 15:38:23","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-5433318/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-5433318/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":71733552,"identity":"c6453ccc-064c-4246-90a2-cf92c84cc973","added_by":"auto","created_at":"2024-12-18 07:09:08","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":4004092,"visible":true,"origin":"","legend":"","description":"","filename":"ysqbpvkvvmdwcsqbyscntqwkzpccydjx.pdf","url":"https://assets-eu.researchsquare.com/files/rs-5433318/v1_covered_01fd6bc5-19ef-4d79-bc17-71c981500e0d.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"10-GHz Ultrashort Optical pulse and Ultraflat Optical Comb Generation via a Semiconductor Mode-locked Laser","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":true,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"","lastPublishedDoi":"10.21203/rs.3.rs-5433318/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-5433318/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"We report a 10-GHz ultrashort pulse and optical comb generation using a quantum well (QW) semiconductor mode-locked laser (SMLL). 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