{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Fujii S"],"funding":["RIKEN","Japan Society for the Promotion of Science"],"pagination":["4209-4216"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC11010230"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["24(14)"],"pubmed_abstract":["Optical nonlinear processes are indispensable in a wide range of applications, including ultrafast lasers, microscopy, and quantum information technologies. Among the diverse nonlinear processes, second-order effects usually overwhelm the higher-order ones, except in centrosymmetric systems, where the second-order susceptibility vanishes to allow the use of the third-order nonlinearity. Here we demonstrate a hybrid photonic platform whereby the balance between second- and third-order susceptibilities can be tuned flexibly. By decorating ultra-high-<i>Q</i> silica microcavities with atomically thin tungsten diselenide, we observe cavity-enhanced second-harmonic generation and sum-frequency generation with continuous-wave excitation at a power level of only a few hundred microwatts. We show "],"journal":["Nano letters"],"pubmed_title":["van der Waals Decoration of Ultra-High-<i>Q</i> Silica Microcavities for χ<sup>(2)</sup>-χ<sup>(3)</sup> Hybrid Nonlinear Photonics."],"pmcid":["PMC11010230"],"funding_grant_id":["JP23H00262","JP22K14624","JP22K14625","JP22H01893","JP22K14623"],"pubmed_authors":["Kozawa D","Yamashita D","Fong CF","Fujii S","Kato YK","Fang N"],"additional_accession":[]},"is_claimable":false,"name":"van der Waals Decoration of Ultra-High-<i>Q</i> Silica Microcavities for χ<sup>(2)</sup>-χ<sup>(3)</sup> Hybrid Nonlinear Photonics.","description":"Optical nonlinear processes are indispensable in a wide range of applications, including ultrafast lasers, microscopy, and quantum information technologies. Among the diverse nonlinear processes, second-order effects usually overwhelm the higher-order ones, except in centrosymmetric systems, where the second-order susceptibility vanishes to allow the use of the third-order nonlinearity. Here we demonstrate a hybrid photonic platform whereby the balance between second- and third-order susceptibilities can be tuned flexibly. By decorating ultra-high-<i>Q</i> silica microcavities with atomically thin tungsten diselenide, we observe cavity-enhanced second-harmonic generation and sum-frequency generation with continuous-wave excitation at a power level of only a few hundred microwatts. We show ","dates":{"release":"2024-01-01T00:00:00Z","publication":"2024 Apr","modification":"2025-04-26T20:11:48.829Z","creation":"2025-04-06T16:20:44.621Z"},"accession":"S-EPMC11010230","cross_references":{"pubmed":["38557205"],"doi":["10.1021/acs.nanolett.4c00273"]}}