Ultrafast Picosecond Mode-locked Pulse with Dissipative soliton Generation Using Polyaniline Boron Nitride Nanocomposite as Saturable Absorber

Ultrafast Picosecond Mode-locked Pulse with Dissipative soliton Generation Using Polyaniline Boron Nitride Nanocomposite as Saturable Absorber | 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 Research Article Ultrafast Picosecond Mode-locked Pulse with Dissipative soliton Generation Using Polyaniline Boron Nitride Nanocomposite as Saturable Absorber Hasanain Naser Abd Ali, Anas Abdul Latiff, Aeriyn D. Ahmad, Sulaiman Wadi Harun This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-8981506/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 This study demonstrates ultrafast picosecond mode-locked pulse production in an erbium-doped fiber laser, using a Polyaniline–Boron Nitride (PANI–BN) nanocomposite as a saturable absorber. The nanocomposite features substantial nonlinear optical absorption and quick recovery dynamics, which make it feasible for robust self-starting mode-locked operation. It was feasible to make stable dissipative soliton pulses in the normal-dispersion domain by adding the PANI–BN saturable absorber to the laser cavity. The laser's core wavelength is 1531.4 nm, and it emits steady picosecond pulses that recur every 1.860 MHz. The pulse width of 240.1 ps reveals that the system operates extremely swiftly, in the region of picoseconds. The output power rose boosted from 4.6 to 8.08 mW when the input pump power was raised from 122.9 to 210.6 mW (which is the same as an LD current range of (310–500 mA). This means that the slope efficiency was 10.1%. The most energy in a pulse was 4.34409 nJ. The mode-locked pulses had a high signal-to-noise ratio (SNR) of 66.24 dB, which implies they were highly steady and did not change much in amplitude. Dissipative solitons emerge when the cavity's normal dispersion, nonlinearity, gain, and spectral filtering are all in balance. The PANI–BN nanocomposite is particularly critical for beginning and retaining the phase locking of longitudinal modes since its intensity affects how well it works. The findings indicate that the PANI–BN nanocomposite serves as an effective and robust saturable absorber for generating stable ultrafast picosecond dissipative soliton pulses. This work demonstrates the applicability of polymer-based nanocomposite materials in sophisticated ultrafast photonic applications, including optical communications, precision metrology, and high-resolution spectroscopy. Polyacrylonitrile Boron Nitride Ultrafast Mode-locked Picosecond Dissipative Soliton 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. 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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-8981506","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":623757901,"identity":"f5d24a4c-f7b0-4b7a-8f50-4090bb337869","order_by":0,"name":"Hasanain Naser Abd Ali","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAwUlEQVRIiWNgGAWjYBACAxiDH0QkFJCiRbIBpMUAt0pMLQYHULh4gLl0A9vjCgY7eePzqxM/PDBgkOcXO4Bfi+WcA+yGZxiSDbfdeLtZAugww5mzEwg47EYCG9AbzIzbbpzdANKSYHCbOC319ptnnN38gxQthxM38PduI9aWxDbJBoPjyTNu8G6zSDCQIMYvycckGyqqbfv7z26++aPCRp5fmoAWBgbGBkh0SIBVShBSjgz4D5CiehSMglEwCkYSAACBi0C/GjznoAAAAABJRU5ErkJggg==","orcid":"","institution":"Technical University of Malaysia Malacca","correspondingAuthor":true,"prefix":"","firstName":"Hasanain","middleName":"Naser Abd","lastName":"Ali","suffix":""},{"id":623757902,"identity":"44ed2aab-f0be-4916-9b84-ebb6dd759c8e","order_by":1,"name":"Anas Abdul Latiff","email":"","orcid":"","institution":"Technical University of Malaysia Malacca","correspondingAuthor":false,"prefix":"","firstName":"Anas","middleName":"Abdul","lastName":"Latiff","suffix":""},{"id":623757903,"identity":"3184c731-97cf-4e4b-8699-27ba8fd083f3","order_by":2,"name":"Aeriyn D. 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The nanocomposite features substantial nonlinear optical absorption and quick recovery dynamics, which make it feasible for robust self-starting mode-locked operation. It was feasible to make stable dissipative soliton pulses in the normal-dispersion domain by adding the PANI\u0026ndash;BN saturable absorber to the laser cavity. The laser's core wavelength is 1531.4 nm, and it emits steady picosecond pulses that recur every 1.860 MHz. The pulse width of 240.1 ps reveals that the system operates extremely swiftly, in the region of picoseconds. The output power rose boosted from 4.6 to 8.08 mW when the input pump power was raised from 122.9 to 210.6 mW (which is the same as an LD current range of (310\u0026ndash;500 mA). This means that the slope efficiency was 10.1%. The most energy in a pulse was 4.34409 nJ. The mode-locked pulses had a high signal-to-noise ratio (SNR) of 66.24 dB, which implies they were highly steady and did not change much in amplitude. Dissipative solitons emerge when the cavity's normal dispersion, nonlinearity, gain, and spectral filtering are all in balance. The PANI\u0026ndash;BN nanocomposite is particularly critical for beginning and retaining the phase locking of longitudinal modes since its intensity affects how well it works. The findings indicate that the PANI\u0026ndash;BN nanocomposite serves as an effective and robust saturable absorber for generating stable ultrafast picosecond dissipative soliton pulses. This work demonstrates the applicability of polymer-based nanocomposite materials in sophisticated ultrafast photonic applications, including optical communications, precision metrology, and high-resolution spectroscopy.\u003c/p\u003e","manuscriptTitle":"Ultrafast Picosecond Mode-locked Pulse with Dissipative soliton Generation Using Polyaniline Boron Nitride Nanocomposite as Saturable Absorber","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2026-04-17 10:11:41","doi":"10.21203/rs.3.rs-8981506/v1","editorialEvents":[{"type":"communityComments","content":0}],"status":"published","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}}],"origin":"","ownerIdentity":"df97ca18-f16f-4a80-bb65-78ceaae8aef2","owner":[],"postedDate":"April 17th, 2026","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"posted","subjectAreas":[],"tags":[],"updatedAt":"2026-05-14T23:38:50+00:00","versionOfRecord":[],"versionCreatedAt":"2026-04-17 10:11:41","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-8981506","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-8981506","identity":"rs-8981506","version":["v1"]},"buildId":"XKTyCvWXoU3ODBz1xrDgd","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}