Electrically Driven Plasmonic Lasing with Record-low Threshold

Electrically Driven Plasmonic Lasing with Record-low Threshold | 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 Electrically Driven Plasmonic Lasing with Record-low Threshold Bowen Liu, Baoqin Mu, Zelan Tang, Peiwei Si, Yao Yang, Lei Cheng, and 2 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-8646981/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 Electrically driven nanolasers have attracted considerable attention owing to their potential in miniaturize coherent light sources beyond the diffraction limit, enabling ultra-compact photonic integrated circuits. Although significant progress has been made in this field, electrically driven lasing with an ultralow threshold remains challenging. Here, we demonstrate an electrically driven laser by two AA batteries with a threshold of 58 mA cm⁻², which is three-order-of-magnitude lower than the previous record. This breakthrough is mainly attributed to the Bloch surface plasmon polariton (Bloch-SPP) nanocavity, which provides orders of magnitude enhancement electromagnetic field, leading to significantly improved interaction between the gain medium and the optical cavity. Simultaneously, the nanocavity maintains an ultrahigh quality (Q) factor and balanced transparency. Feedbacked by this plasmonic nanocavity, directional lasing with a narrow linewidth, linear polarization, and spatial coherence is achieved. In addition, the laser exhibits excellent operational stability over 24 h (T₅₀ = 24.1 h). These verified lasing properties demonstrate that our device outperforms previously reported electrically driven organic lasers and dual-cavity perovskite lasers. Owing to the advances of the plasmonic cavity, electrically driven lasers that gained by various media is possible. Consequently, applications based on on-chip coherent light sources can be explored and developed. Physical sciences/Materials science/Materials for optics/Lasers, LEDs and light sources Physical sciences/Optics and photonics/Optical materials and structures/Nanocavities Full Text Additional Declarations There is NO Competing Interest. Supplementary Files 4SupplementaryTable.pdf Supplementary Tables 1 and 2 2Table.pdf Extended Data Tables 1 and 2 5SupplementaryInformation.pdf Supplementary Information 3ExtendedData.pdf Extended Data Figures 1-9 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-8646981","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":592790189,"identity":"5855dbfc-67d0-495f-8c02-310ed71953ac","order_by":0,"name":"Bowen 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Although significant progress has been made in this field, electrically driven lasing with an ultralow threshold remains challenging. Here, we demonstrate an electrically driven laser by two AA batteries with a threshold of 58 mA cm⁻², which is three-order-of-magnitude lower than the previous record. This breakthrough is mainly attributed to the Bloch surface plasmon polariton (Bloch-SPP) nanocavity, which provides orders of magnitude enhancement electromagnetic field, leading to significantly improved interaction between the gain medium and the optical cavity. Simultaneously, the nanocavity maintains an ultrahigh quality (Q) factor and balanced transparency. Feedbacked by this plasmonic nanocavity, directional lasing with a narrow linewidth, linear polarization, and spatial coherence is achieved. In addition, the laser exhibits excellent operational stability over 24 h (T₅₀ = 24.1 h). These verified lasing properties demonstrate that our device outperforms previously reported electrically driven organic lasers and dual-cavity perovskite lasers. Owing to the advances of the plasmonic cavity, electrically driven lasers that gained by various media is possible. 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