Integrated nonlinear photonics with Van der Waals materials via multi-mode quasi-BICs

Integrated nonlinear photonics with Van der Waals materials via multi-mode quasi-BICs | 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 Integrated nonlinear photonics with Van der Waals materials via multi-mode quasi-BICs Yun-Feng Xiao, Zhuojun Liu, Qi-Tao Cao, Xuying Wang, Guixin Qiu, and 2 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6077849/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted You are reading this latest preprint version Abstract Layered van der Waals (VdW) materials, with their exceptional optical and electronic properties, hold great promise for advancing photonic technologies. However, their integration into high-performance optical systems has been hindered by inefficient light-matter interactions over short interaction lengths. Here, we address this challenge by integrating VdW materials with multi-mode quasi-bound states in the continuum (quasi-BICs), creating a versatile platform to enhance light-matter interactions in compact and scalable photonic devices and thereby enabling record-breaking efficiency in nonlinear and quantum photonic processes. Leveraging vectorial beam excitation, we observe a 1.6 × 10 6 - fold enhancement in second harmonic generation when pump resonates with a high-Q quasi-BIC. The multiple high-Q resonances of quasi-BICs further enable record-high efficient sum-frequency generations in the photonic crystal slabs. In addition, we experimentally demonstrate difference frequency generation, producing vectorial idler light and facilitating parametric amplification of signal emissions under continuous-wave operation. This work establishes a scalable and versatile platform for integrated photonic and quantum technologies, providing new insights into the interplay between VdW materials and BICs for advanced optical applications. Physical sciences/Nanoscience and technology/Nanoscale materials Physical sciences/Optics and photonics/Optical materials and structures Full Text Additional Declarations There is NO Competing Interest. Supplementary Files ExtendedDataFig1.pdf ExtendedDataFig2.pdf ExtendedDataFig3.pdf Cite Share Download PDF Status: Under Review 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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