{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"omics_type":["Unknown"],"volume":["10(2)"],"submitter":["Kalinic B"],"pubmed_abstract":["In the quest for new and increasingly efficient photon sources, the engineering of the photonic environment at the subwavelength scale is fundamental for controlling the properties of quantum emitters. A high refractive index particle can be exploited to enhance the optical properties of nearby emitters without decreasing their quantum efficiency, but the relatively modest <i>Q</i>-factors (<i>Q</i> ∼ 5-10) limit the local density of optical states (LDOS) amplification achievable. On the other hand, ultrahigh <i>Q</i>-factors (up to <i>Q</i> ∼ 10<sup>9</sup>) have been reported for quasi-BIC modes in all-dielectric nanostructures. In the present work, we demonstrate that the combination of quasi-BIC modes with high spectral confinement and nanogaps with spacial confinement in silicon slotted nanoantennas lead to a significant boosting of the electromagnetic LDOS in the optically active region of the nanoantenna array. We observe an enhancement of up to 3 orders of magnitude in the photoluminescence intensity and 2 orders of magnitude in the decay rate of the Er<sup>3+</sup> emission at room temperature and telecom wavelengths. Moreover, the nanoantenna directivity is increased, proving that strong beaming effects can be obtained when the emitted radiation couples to the high <i>Q</i>-factor modes. Finally, via tuning the nanoanntenna aspect ratio, a selective control of the Er<sup>3+</sup> electric and magnetic radiative transitions can be obtained, keeping the quantum efficiency almost unitary."],"journal":["ACS photonics"],"pagination":["534-543"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC9936627"],"repository":["biostudies-literature"],"pubmed_title":["Quasi-BIC Modes in All-Dielectric Slotted Nanoantennas for Enhanced Er<sup>3+</sup> Emission."],"pmcid":["PMC9936627"],"pubmed_authors":["Balasa IG","Mattei G","Jacassi A","Sapienza R","Maier SA","Kalinic B","Cesca T","Trevisani M"],"additional_accession":[]},"is_claimable":false,"name":"Quasi-BIC Modes in All-Dielectric Slotted Nanoantennas for Enhanced Er<sup>3+</sup> Emission.","description":"In the quest for new and increasingly efficient photon sources, the engineering of the photonic environment at the subwavelength scale is fundamental for controlling the properties of quantum emitters. A high refractive index particle can be exploited to enhance the optical properties of nearby emitters without decreasing their quantum efficiency, but the relatively modest <i>Q</i>-factors (<i>Q</i> ∼ 5-10) limit the local density of optical states (LDOS) amplification achievable. On the other hand, ultrahigh <i>Q</i>-factors (up to <i>Q</i> ∼ 10<sup>9</sup>) have been reported for quasi-BIC modes in all-dielectric nanostructures. In the present work, we demonstrate that the combination of quasi-BIC modes with high spectral confinement and nanogaps with spacial confinement in silicon slotted nanoantennas lead to a significant boosting of the electromagnetic LDOS in the optically active region of the nanoantenna array. We observe an enhancement of up to 3 orders of magnitude in the photoluminescence intensity and 2 orders of magnitude in the decay rate of the Er<sup>3+</sup> emission at room temperature and telecom wavelengths. Moreover, the nanoantenna directivity is increased, proving that strong beaming effects can be obtained when the emitted radiation couples to the high <i>Q</i>-factor modes. Finally, via tuning the nanoanntenna aspect ratio, a selective control of the Er<sup>3+</sup> electric and magnetic radiative transitions can be obtained, keeping the quantum efficiency almost unitary.","dates":{"release":"2023-01-01T00:00:00Z","publication":"2023 Feb","modification":"2025-04-04T13:36:36.464Z","creation":"2025-04-04T13:36:36.464Z"},"accession":"S-EPMC9936627","cross_references":{"pubmed":["36820324"],"doi":["10.1021/acsphotonics.2c01703"]}}