{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T03:27:50Z","timestamp":1760239670969,"version":"build-2065373602"},"reference-count":37,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2020,12,24]],"date-time":"2020-12-24T00:00:00Z","timestamp":1608768000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100002261","name":"Russian Foundation for Basic Research","doi-asserted-by":"publisher","award":["19-52-54003"],"award-info":[{"award-number":["19-52-54003"]}],"id":[{"id":"10.13039\/501100002261","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100012046","name":"Vietnam Academy of Science and Technology","doi-asserted-by":"publisher","award":["QTRU01.01\/19-20"],"award-info":[{"award-number":["QTRU01.01\/19-20"]}],"id":[{"id":"10.13039\/100012046","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>The backscattering spectra of a 500 nm thick gold film, which was excited near the 525 nm transverse localized plasmon resonance of its constituent, self-organized, vertically-aligned nanorods by normally incident 515 nm, 300 fs laser pulses with linear, radial, azimuthal and circular polarizations, revealed a few-percent conversion into Stokes and anti-Stokes side-band peaks. The investigation of these spectral features based on the nanoscale characterization of the oligomeric structure and numerical simulations of its backscattering response indicated nonlinear Fano-like plasmonic interactions, particularly the partially degenerate four-wave mixing comprised by the visible-range transverse plasmon resonance of the individual nanorods and an IR-range collective mode of the oligomeric structure. Such oligomeric structures in plasmonic films may greatly enhance inner nonlinear electromagnetic interactions and inner near-IR hotspots, paving the way for their engineered IR tunability for broad applications in chemosensing and biosensing.<\/jats:p>","DOI":"10.3390\/s21010059","type":"journal-article","created":{"date-parts":[[2020,12,24]],"date-time":"2020-12-24T09:02:44Z","timestamp":1608800564000},"page":"59","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Few Percent Efficient Polarization-Sensitive Conversion in Nonlinear Plasmonic Interactions Inside Oligomeric Gold Structures"],"prefix":"10.3390","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6391-2064","authenticated-orcid":false,"given":"Nikolay","family":"Busleev","sequence":"first","affiliation":[{"name":"Quantum Electronics Division, Lebedev Physical Institute, Leninskiy Prospect 53, 119991 Moscow, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6657-2739","authenticated-orcid":false,"given":"Sergey","family":"Kudryashov","sequence":"additional","affiliation":[{"name":"Quantum Electronics Division, Lebedev Physical Institute, Leninskiy Prospect 53, 119991 Moscow, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Irina","family":"Saraeva","sequence":"additional","affiliation":[{"name":"Quantum Electronics Division, Lebedev Physical Institute, Leninskiy Prospect 53, 119991 Moscow, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6304-1147","authenticated-orcid":false,"given":"Pavel","family":"Danilov","sequence":"additional","affiliation":[{"name":"Quantum Electronics Division, Lebedev Physical Institute, Leninskiy Prospect 53, 119991 Moscow, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3139-421X","authenticated-orcid":false,"given":"Andrey","family":"Rudenko","sequence":"additional","affiliation":[{"name":"Quantum Electronics Division, Lebedev Physical Institute, Leninskiy Prospect 53, 119991 Moscow, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dmitry","family":"Zayarny","sequence":"additional","affiliation":[{"name":"Quantum Electronics Division, Lebedev Physical Institute, Leninskiy Prospect 53, 119991 Moscow, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Stefan A.","family":"Maier","sequence":"additional","affiliation":[{"name":"Chair in Hybrid Nanosystems, Faculty of Physics and Center for Nanoscience, Ludwig-Maximilians University of Munich, 80539 Munich, Germany"},{"name":"Department of Physics, Imperial College London, London SW7 2AZ, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Pham Hong","family":"Minh","sequence":"additional","affiliation":[{"name":"Institute of Physics, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Street, Cau Giay District, Hanoi 10000, Vietnam"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Andrey","family":"Ionin","sequence":"additional","affiliation":[{"name":"Quantum Electronics Division, Lebedev Physical Institute, Leninskiy Prospect 53, 119991 Moscow, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2020,12,24]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"2721","DOI":"10.1021\/nl101938p","article-title":"Transition from Isolated to Collective Modes in Plasmonic Oligomers","volume":"10","author":"Hentschel","year":"2010","journal-title":"Nano Lett."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"2571","DOI":"10.1021\/acs.nanolett.8b00308","article-title":"Collective Effects in Second-Harmonic Generation from Plasmonic Oligomers","volume":"18","author":"Bautista","year":"2018","journal-title":"Nano Lett."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"454","DOI":"10.1021\/acsphotonics.6b00902","article-title":"Nonlinear Symmetry Breaking in Symmetric Oligomers","volume":"4","author":"Rahmani","year":"2017","journal-title":"ACS Photonics"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"20405","DOI":"10.1039\/C5NR04118J","article-title":"Single Protein Sensing with Asymmetric Plasmonic Hexamer via Fano Resonance Enhanced Two-Photon Luminescence","volume":"7","author":"Deng","year":"2015","journal-title":"Nanoscale"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"9215","DOI":"10.1073\/pnas.1220304110","article-title":"Coherent Fano Resonances in a Plasmonic Nanocluster Enhance Optical Four-Wave Mixing","volume":"110","author":"Zhang","year":"2013","journal-title":"Proc. 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