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Fukuta T, Kato R, Tanaka T, Yano TA. Fabrication of Mie-resonant silicon nanoparticles using laser annealing for surface-enhanced fluorescence spectroscopy. MICROSYSTEMS & NANOENGINEERING 2024; 10:45. [PMID: 38560726 PMCID: PMC10978982 DOI: 10.1038/s41378-024-00666-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 12/18/2023] [Accepted: 01/14/2024] [Indexed: 04/04/2024]
Abstract
Silicon nanostructures with unique Mie resonances have garnered considerable attention in the field of nanophotonics. Here, we present a simple and efficient method for the fabrication of silicon (Si) nanoparticle substrates using continuous-wave (CW) laser annealing. The resulting silicon nanoparticles exhibit Mie resonances in the visible region, and their resonant wavelengths can be precisely controlled. Notably, laser-annealed silicon nanoparticle substrates show a 60-fold enhancement in fluorescence. This tunable and fluorescence-enhancing silicon nanoparticle platform has tremendous potential for highly sensitive fluorescence sensing and biomedical imaging applications.
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Affiliation(s)
- Tatsuya Fukuta
- Institute of Post-LED Photonics, Tokushima University, 2-1 Minami-Josanjima, Tokushima, 770-8506 Japan
- Innovative Photon Manipulation Research Team, RIKEN Center for Advanced Photonics, Wako, Saitama, 351-0198 Japan
- Metamaterials Laboratory, RIKEN Cluster for Pioneering Research, Wako, Saitama, 351-0109 Japan
| | - Ryo Kato
- Institute of Post-LED Photonics, Tokushima University, 2-1 Minami-Josanjima, Tokushima, 770-8506 Japan
- Innovative Photon Manipulation Research Team, RIKEN Center for Advanced Photonics, Wako, Saitama, 351-0198 Japan
- Metamaterials Laboratory, RIKEN Cluster for Pioneering Research, Wako, Saitama, 351-0109 Japan
| | - Takuo Tanaka
- Institute of Post-LED Photonics, Tokushima University, 2-1 Minami-Josanjima, Tokushima, 770-8506 Japan
- Innovative Photon Manipulation Research Team, RIKEN Center for Advanced Photonics, Wako, Saitama, 351-0198 Japan
- Metamaterials Laboratory, RIKEN Cluster for Pioneering Research, Wako, Saitama, 351-0109 Japan
| | - Taka-aki Yano
- Institute of Post-LED Photonics, Tokushima University, 2-1 Minami-Josanjima, Tokushima, 770-8506 Japan
- Innovative Photon Manipulation Research Team, RIKEN Center for Advanced Photonics, Wako, Saitama, 351-0198 Japan
- Metamaterials Laboratory, RIKEN Cluster for Pioneering Research, Wako, Saitama, 351-0109 Japan
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Zhao G, Gao X, Zhou Y, Song M, Du Y, Li Z, Guan J, Cai Y, Ao X. Unidirectional Lasing from Mirror-Coupled Dielectric Lattices. NANO LETTERS 2024; 24:3378-3385. [PMID: 38456747 DOI: 10.1021/acs.nanolett.3c05038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/09/2024]
Abstract
This paper reports how a hybrid system composed of transparent dielectric lattices over a metal mirror can produce high-quality lattice resonances for unidirectional lasing. The enhanced electromagnetic fields are concentrated in the cladding of the periodic dielectric structures and away from the metal. Based on a mirror-image model, we reveal that such high-quality lattice resonances are governed by bound states in the continuum resulting from destructive interference. Using hexagonal arrays of titanium dioxide nanoparticles on a silica-coated silver mirror, we observed lattice resonances with quality factors of up to 2750 in the visible regime. With the lattice resonances as optical feedback and dye solution as the gain medium, we demonstrated unidirectional lasing under optical pumping, where the array size was down to 100 μm × 100 μm. Our scheme can be extended to other spectral regimes to simultaneously achieve strongly enhanced surface fields and high quality factors.
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Affiliation(s)
- Guanyue Zhao
- Shandong Provincial Engineering and Technical Center of Light Manipulations & Shandong Provincial Key Laboratory of Optics and Photonic Device, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
| | - Xinyu Gao
- Shandong Provincial Engineering and Technical Center of Light Manipulations & Shandong Provincial Key Laboratory of Optics and Photonic Device, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
| | - Yufeng Zhou
- Shandong Provincial Engineering and Technical Center of Light Manipulations & Shandong Provincial Key Laboratory of Optics and Photonic Device, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
| | - Mengyuan Song
- Shandong Provincial Engineering and Technical Center of Light Manipulations & Shandong Provincial Key Laboratory of Optics and Photonic Device, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
| | - Yixuan Du
- Shandong Provincial Engineering and Technical Center of Light Manipulations & Shandong Provincial Key Laboratory of Optics and Photonic Device, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
| | - Zhuang Li
- Shandong Provincial Engineering and Technical Center of Light Manipulations & Shandong Provincial Key Laboratory of Optics and Photonic Device, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
| | - Jun Guan
- School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, Shenzhen 518172, China
| | - Yangjian Cai
- Shandong Provincial Engineering and Technical Center of Light Manipulations & Shandong Provincial Key Laboratory of Optics and Photonic Device, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
- Collaborative Innovation Center of Light Manipulation and Applications, Shandong Normal University, Jinan 250358, China
- Joint Research Center of Light Manipulation Science and Photonic Integrated Chip of East China Normal University and Shandong Normal University, East China Normal University, Shanghai 200241, China
| | - Xianyu Ao
- Shandong Provincial Engineering and Technical Center of Light Manipulations & Shandong Provincial Key Laboratory of Optics and Photonic Device, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
- Collaborative Innovation Center of Light Manipulation and Applications, Shandong Normal University, Jinan 250358, China
- Joint Research Center of Light Manipulation Science and Photonic Integrated Chip of East China Normal University and Shandong Normal University, East China Normal University, Shanghai 200241, China
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Bashiri A, Vaskin A, Tanaka K, Steinert M, Pertsch T, Staude I. Color Routing of the Emission from Magnetic and Electric Dipole Transitions of Eu 3+ by Broken-Symmetry TiO 2 Metasurfaces. ACS NANO 2024; 18:506-514. [PMID: 38109362 DOI: 10.1021/acsnano.3c08270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2023]
Abstract
Manipulation of magnetic dipole emission with resonant photonic nanostructures is of great interest for both fundamental research and applications. However, obtaining selective control over the emission properties of magnetic dipole transitions is challenging, as they usually occur within a manifold of spectrally close emission lines associated with different spin states of the involved electronic levels. Here we demonstrate spectrally selective directional tailoring of magnetic dipole emission using designed photonic nanostructures featuring a high quality factor. Specifically, we employ a hybrid nanoscale optical system consisting of a Eu3+ compound coupled to a designed broken-symmetry TiO2 metasurface to demonstrate directional color routing of the compound's emission through its distinct electric and magnetic-dominated electronic transition channels. Using low numerical aperture collection optics, we achieve a fluorescence signal enhancement of up to 33.13 for the magnetic-dominated dipole transition at 590 nm when it spectrally overlaps with a spectrally narrow resonance of the metasurface. This makes the, usually weak, magnetic dipole transition the most intense spectral line in our recorded fluorescence spectra. By studying the directional emission properties for the coupled system using Fourier imaging and time-resolved fluorescence measurements, we demonstrate that the high-quality-factor modes in the metasurface enable free-space light routing, where forward-directed emission is established for the magnetic-dominated dipole transition, whereas the light emitted via the electric dipole transition is mainly directed sideways. Our results underpin the importance of magnetic light-matter interactions as an additional degree of freedom in photonic and optoelectronic systems. Moreover, they facilitate the development of spectrometer-free and highly integrated nanophotonic imaging, sensing, and probing devices.
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Affiliation(s)
- Ayesheh Bashiri
- Institute of Solid State Physics, Abbe Center of Photonics, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Aleksandr Vaskin
- Institute of Applied Physics, Abbe Center of Photonics, Friedrich Schiller University Jena, 07745 Jena, Germany
| | - Katsuya Tanaka
- Institute of Solid State Physics, Abbe Center of Photonics, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Michael Steinert
- Institute of Applied Physics, Abbe Center of Photonics, Friedrich Schiller University Jena, 07745 Jena, Germany
| | - Thomas Pertsch
- Institute of Applied Physics, Abbe Center of Photonics, Friedrich Schiller University Jena, 07745 Jena, Germany
| | - Isabelle Staude
- Institute of Solid State Physics, Abbe Center of Photonics, Friedrich Schiller University Jena, 07743 Jena, Germany
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Zinovyev VA, Smagina ZV, Zinovieva AF, Bloshkin AA, Dvurechenskii AV, Rodyakina EE, Stepikhova MV, Peretokin AV, Novikov AV. Emission Enhancement of Ge/Si Quantum Dots in Hybrid Structures with Subwavelength Lattice of Al Nanodisks. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2422. [PMID: 37686930 PMCID: PMC10490227 DOI: 10.3390/nano13172422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Revised: 08/19/2023] [Accepted: 08/23/2023] [Indexed: 09/10/2023]
Abstract
The effects of resonance interaction of plasmonic and photonic modes in hybrid metal-dielectric structures with square Al nanodisk lattices coupled with a Si waveguide layer were investigated using micro-photoluminescence (micro-PL) spectroscopy. As radiation sources, GeSi quantum dots were embedded in the waveguide. A set of narrow PL peaks superimposed on the broad bands were observed in the range of quantum dot emissions. At optimal parameters of Al nanodisks lattices, almost one order increasing of PL intensity was obtained. The experimental PL spectra are in good agreement with results of theoretical calculations. The realization of high-quality bound states in the continuum was confirmed by a comparative analysis of the experimental spectra and theoretical dispersion dependences. The results demonstrated the perspectives of these type structures for a flat band realization and supporting the slow light.
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Affiliation(s)
- Vladimir A. Zinovyev
- Rzhanov Institute of Semiconductor Physics, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia; (Z.V.S.); (A.F.Z.); (A.A.B.); (A.V.D.); (E.E.R.)
| | - Zhanna V. Smagina
- Rzhanov Institute of Semiconductor Physics, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia; (Z.V.S.); (A.F.Z.); (A.A.B.); (A.V.D.); (E.E.R.)
| | - Aigul F. Zinovieva
- Rzhanov Institute of Semiconductor Physics, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia; (Z.V.S.); (A.F.Z.); (A.A.B.); (A.V.D.); (E.E.R.)
- Department of Physics, Novosibirsk State University, 630090 Novosibirsk, Russia
| | - Aleksei A. Bloshkin
- Rzhanov Institute of Semiconductor Physics, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia; (Z.V.S.); (A.F.Z.); (A.A.B.); (A.V.D.); (E.E.R.)
- Department of Physics, Novosibirsk State University, 630090 Novosibirsk, Russia
| | - Anatoly V. Dvurechenskii
- Rzhanov Institute of Semiconductor Physics, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia; (Z.V.S.); (A.F.Z.); (A.A.B.); (A.V.D.); (E.E.R.)
- Department of Physics, Novosibirsk State University, 630090 Novosibirsk, Russia
| | - Ekaterina E. Rodyakina
- Rzhanov Institute of Semiconductor Physics, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia; (Z.V.S.); (A.F.Z.); (A.A.B.); (A.V.D.); (E.E.R.)
- Department of Physics, Novosibirsk State University, 630090 Novosibirsk, Russia
| | - Margarita V. Stepikhova
- Institute for Physics of Microstructures of the Russian Academy of Sciences, 603950 Nizhny Novgorod, Russia; (M.V.S.); (A.V.P.); (A.V.N.)
| | - Artem V. Peretokin
- Institute for Physics of Microstructures of the Russian Academy of Sciences, 603950 Nizhny Novgorod, Russia; (M.V.S.); (A.V.P.); (A.V.N.)
| | - Alexey V. Novikov
- Institute for Physics of Microstructures of the Russian Academy of Sciences, 603950 Nizhny Novgorod, Russia; (M.V.S.); (A.V.P.); (A.V.N.)
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