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Córdova-Castro RM, van Dam B, Lauri A, Maier SA, Sapienza R, De Wilde Y, Izeddin I, Krachmalnicoff V. Single-emitter super-resolved imaging of radiative decay rate enhancement in dielectric gap nanoantennas. LIGHT, SCIENCE & APPLICATIONS 2024; 13:7. [PMID: 38167240 PMCID: PMC10761855 DOI: 10.1038/s41377-023-01349-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 11/20/2023] [Accepted: 11/29/2023] [Indexed: 01/05/2024]
Abstract
High refractive index dielectric nanoantennas strongly modify the decay rate via the Purcell effect through the design of radiative channels. Due to their dielectric nature, the field is mainly confined inside the nanostructure and in the gap, which is hard to probe with scanning probe techniques. Here we use single-molecule fluorescence lifetime imaging microscopy (smFLIM) to map the decay rate enhancement in dielectric GaP nanoantenna dimers with a median localization precision of 14 nm. We measure, in the gap of the nanoantenna, decay rates that are almost 30 times larger than on a glass substrate. By comparing experimental results with numerical simulations we show that this large enhancement is essentially radiative, contrary to the case of plasmonic nanoantennas, and therefore has great potential for applications such as quantum optics and biosensing.
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Affiliation(s)
- R Margoth Córdova-Castro
- Institut Langevin, ESPCI Paris, PSL University, CNRS, Paris, France
- Department of Physics, University of Ottawa, Ottawa, ON, Canada
| | - Bart van Dam
- Institut Langevin, ESPCI Paris, PSL University, CNRS, Paris, France
| | - Alberto Lauri
- The Blackett Laboratory, Department of Physics, Imperial College London, London, UK
| | - Stefan A Maier
- The Blackett Laboratory, Department of Physics, Imperial College London, London, UK
- School of Physics and Astronomy, Monash University, Clayton, Victoria, Australia
- Chair in Hybrid Nanosystems, Ludwig-Maximilians Universität München, Muenchen, Germany
| | - Riccardo Sapienza
- The Blackett Laboratory, Department of Physics, Imperial College London, London, UK
| | - Yannick De Wilde
- Institut Langevin, ESPCI Paris, PSL University, CNRS, Paris, France
| | - Ignacio Izeddin
- Institut Langevin, ESPCI Paris, PSL University, CNRS, Paris, France.
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2
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Zhang Y, Chen G, Zhao J, Niu C, Wang Z. Low loss sensitivity of the anapole mode in localized defective nanoparticles. APPLIED OPTICS 2023; 62:2952-2959. [PMID: 37133140 DOI: 10.1364/ao.485449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The excitation of a nonradiating anapole in a high-index dielectric nanosphere is an effective pathway for enhancing light absorption. Here, we investigate the effect of localized lossy defects on the nanoparticle based on Mie scattering and multipole expansion theories and find its low sensitivity to absorption loss. The scattering intensity can be switched by tailoring the defect distribution of the nanosphere. For a high-index nanosphere with homogeneous loss distributions, the scattering abilities of all resonant modes reduce rapidly. By introducing loss in the strong field regions of the nanosphere, we achieve independent tuning of other resonant modes without breaking the anapole mode. As the loss increases, the electromagnetic scattering coefficients of the anapole and other resonant modes show opposite trends, along with strongly suppressed corresponding multipole scattering. While regions with strong electric fields are more susceptible to loss, the anapole's inability to emit or absorb light as a dark mode makes it hard to change. Our findings provide new opportunities for the design of multi-wavelength scattering regulation nanophotonic devices via local loss manipulation on dielectric nanoparticles.
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3
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Venkatesh M, Ganeev RA, Kim VV, Boltaev GS, Sapaev IB, Liang J, Yu J, Li W. Application of vector beams for enhanced high-order harmonics generation in laser-induced plasmas. OPTICS EXPRESS 2022; 30:17080-17093. [PMID: 36221538 DOI: 10.1364/oe.454379] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Accepted: 03/21/2022] [Indexed: 06/16/2023]
Abstract
High-order harmonics driven by phase- and polarization-structured femtosecond pulses are unique sources of the extreme ultraviolet vortex and vector beams, which have various applications. Here, we report the generation of intense high-order harmonics during propagation of the polarization-structured vector beams (radially polarized beam, azimuthally polarized beam, and their superposition) through the laser-induced plasmas (In, C, CdS, Zns, Ag2S). Low-order harmonics became stronger with radially polarized and azimuthally polarized driving beams compared with the linearly polarized beams, which is explained on the basis of phase matching and specific properties of vector beams. Contrary to that, the resonance-enhanced harmonic generated in the indium plasma in the case of radially polarized and azimuthally polarized beams was twice weaker compared with the harmonic generated by the LP beam due to modification in the resonant transition selection rules leading to a decrease of the oscillator strength of ionic transitions. Harmonic cut-off and intensity in the case of superposition of the radially and azimuthally polarized beams were lesser compared with the cases of the individual (radially polarized and azimuthally polarized) beams.
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4
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Melik-Gaykazyan E, Koshelev K, Choi JH, Kruk SS, Bogdanov A, Park HG, Kivshar Y. From Fano to Quasi-BIC Resonances in Individual Dielectric Nanoantennas. NANO LETTERS 2021; 21:1765-1771. [PMID: 33539099 DOI: 10.1021/acs.nanolett.0c04660] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Sharp optical resonances in high-index dielectric nanostructures have recently attracted significant attention for their promising applications in nanophotonics. Fano resonances, as well as resonances associated with bound states in the continuum (BIC), have independently shown a great potential for applications in nanoscale lasers, sensors, and nonlinear optical devices. Here, we demonstrate experimentally a close connection between Fano and quasi-BIC resonances excited in individual dielectric nanoantennas. We analyze systematically the resonant response of AlGaAs nanoantennas pumped with a structured light in the near-infrared range. We trace a variation of the scattering spectrum that fully agrees with an analytical expression governed by a Fano parameter and observe directly a transition to a quasi-BIC resonance. Our results suggest a unified approach toward the analysis of sharp resonances in subwavelength nanostructures originating from strong coupling of optical modes that can provide high energy localization for enhanced light-matter interactions.
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Affiliation(s)
- Elizaveta Melik-Gaykazyan
- Nonlinear Physics Centre, Research School of Physics, Australian National University, Canberra 2601, Australia
- Faculty of Physics, Lomonosov Moscow State University, Moscow 119991, Russia
| | - Kirill Koshelev
- Nonlinear Physics Centre, Research School of Physics, Australian National University, Canberra 2601, Australia
- Department of Physics and Engineering, ITMO University, St Petersburg 197101, Russia
| | - Jae-Hyuck Choi
- Department of Physics, Korea University, Seoul 02841, Republic of Korea
| | - Sergey S Kruk
- Nonlinear Physics Centre, Research School of Physics, Australian National University, Canberra 2601, Australia
| | - Andrey Bogdanov
- Department of Physics and Engineering, ITMO University, St Petersburg 197101, Russia
| | - Hong-Gyu Park
- Department of Physics, Korea University, Seoul 02841, Republic of Korea
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Republic of Korea
| | - Yuri Kivshar
- Nonlinear Physics Centre, Research School of Physics, Australian National University, Canberra 2601, Australia
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5
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Xian M, Xu Y, Ouyang X, Cao Y, Lan S, Li X. Segmented cylindrical vector beams for massively-encoded optical data storage. Sci Bull (Beijing) 2020; 65:2072-2079. [PMID: 36732959 DOI: 10.1016/j.scib.2020.07.016] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 06/07/2020] [Accepted: 06/26/2020] [Indexed: 02/04/2023]
Abstract
The possibility to achieve unprecedented multiplexing of light-matter interaction in nanoscale is of virtue importance from both fundamental science and practical application points of view. Cylindrical vector beams (CVBs) manifested as polarization vortices represent a robust and emerging degree of freedom for information multiplexing with increased capacities. Here, we propose and demonstrate massively-encoded optical data storage (ODS) by harnessing spatially variant electric fields mediated by segmented CVBs. By tight focusing polychromatic segmented CVBs to plasmonic nanoparticle aggregates, record-high multiplexing channels of ODS through different combinations of polarization states and wavelengths have been experimentally demonstrated with a low error rate. Our result not only casts new perceptions for tailoring light-matter interactions utilizing structured light but also enables a new prospective for ultra-high capacity optical memory with minimalist system complexity by combining CVB's compatibility with fiber optics.
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Affiliation(s)
- Mingcong Xian
- Department of Electronic Engineering, College of Information Science and Technology, Jinan University, Guangzhou 510632, China
| | - Yi Xu
- Department of Electronic Engineering, College of Information Science and Technology, Jinan University, Guangzhou 510632, China.
| | - Xu Ouyang
- Department of Electronic Engineering, College of Information Science and Technology, Jinan University, Guangzhou 510632, China; Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou 510632, China
| | - Yaoyu Cao
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou 510632, China
| | - Sheng Lan
- School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006, China
| | - Xiangping Li
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou 510632, China
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6
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Blake MJ, Colon BA, Calhoun TR. Leaving the Limits of Linearity for Light Microscopy. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2020; 124:24555-24565. [PMID: 34306294 PMCID: PMC8301257 DOI: 10.1021/acs.jpcc.0c07501] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Nonlinear microscopy has enabled additional modalities for chemical contrast, deep penetration into biological tissues, and the ability to collect dynamics on ultrafast timescales across heterogenous samples. The additional light fields introduced to a sample offer seemingly endless possibilities for variation to optimize and customize experimentation and the extraction of physical insight. This perspective highlights three areas of growth in this diverse field: the collection of information across multiple timescales, the selective imaging of interfacial chemistry, and the exploitation of quantum behavior for future imaging directions. Future innovations will leverage the work of the studies reviewed here as well as address the current challenges presented.
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Affiliation(s)
- Marea J Blake
- Department of Chemistry, University of Tennessee, Knoxville, TN 37996
| | - Brandon A Colon
- Department of Chemistry, University of Tennessee, Knoxville, TN 37996
| | - Tessa R Calhoun
- Department of Chemistry, University of Tennessee, Knoxville, TN 37996
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7
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Grinblat G, Zhang H, Nielsen MP, Krivitsky L, Berté R, Li Y, Tilmann B, Cortés E, Oulton RF, Kuznetsov AI, Maier SA. Efficient ultrafast all-optical modulation in a nonlinear crystalline gallium phosphide nanodisk at the anapole excitation. SCIENCE ADVANCES 2020; 6:6/34/eabb3123. [PMID: 32937366 PMCID: PMC7442475 DOI: 10.1126/sciadv.abb3123] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 07/09/2020] [Indexed: 05/15/2023]
Abstract
High-refractive index nanostructured dielectrics have the ability to locally enhance electromagnetic fields with low losses while presenting high third-order nonlinearities. In this work, we exploit these characteristics to achieve efficient ultrafast all-optical modulation in a crystalline gallium phosphide (GaP) nanoantenna through the optical Kerr effect (OKE) and two-photon absorption (TPA) in the visible/near-infrared range. We show that an individual GaP nanodisk can yield differential reflectivity modulations of up to ~40%, with characteristic modulation times between 14 and 66 fs, when probed at the anapole excitation (AE). Numerical simulations reveal that the AE represents a unique condition where both the OKE and TPA contribute with the same modulation sign, maximizing the response. These findings highly outperform previous reports on sub-100-fs all-optical switching from resonant nanoscale dielectrics, which have demonstrated modulation depths no larger than 0.5%, placing GaP nanoantennas as a promising choice for ultrafast all-optical modulation at the nanometer scale.
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Affiliation(s)
- Gustavo Grinblat
- Departamento de Física, FCEN, IFIBA-CONICET, Universidad de Buenos Aires, C1428EGA Buenos Aires, Argentina.
| | - Haizhong Zhang
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 138634, Singapore
| | - Michael P Nielsen
- School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney, NSW 2052, Australia
| | - Leonid Krivitsky
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 138634, Singapore
| | - Rodrigo Berté
- Chair in Hybrid Nanosystems, Nanoinstitut München, Fakultät für Physik, Ludwig-Maximilians-Universität München, 80539 München, Germany
| | - Yi Li
- Chair in Hybrid Nanosystems, Nanoinstitut München, Fakultät für Physik, Ludwig-Maximilians-Universität München, 80539 München, Germany
- School of Microelectronics, MOE Engineering Research Center of Integrated Circuits for Next Generation Communications, Southern University of Science and Technology, Shenzhen, 518055 Guangdong, China
| | - Benjamin Tilmann
- Chair in Hybrid Nanosystems, Nanoinstitut München, Fakultät für Physik, Ludwig-Maximilians-Universität München, 80539 München, Germany
| | - Emiliano Cortés
- Chair in Hybrid Nanosystems, Nanoinstitut München, Fakultät für Physik, Ludwig-Maximilians-Universität München, 80539 München, Germany
| | - Rupert F Oulton
- The Blackett Laboratory, Department of Physics, Imperial College London, London SW7 2AZ, UK
| | - Arseniy I Kuznetsov
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 138634, Singapore
| | - Stefan A Maier
- Chair in Hybrid Nanosystems, Nanoinstitut München, Fakultät für Physik, Ludwig-Maximilians-Universität München, 80539 München, Germany
- The Blackett Laboratory, Department of Physics, Imperial College London, London SW7 2AZ, UK
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