Designer Bloch plasmon polariton dispersion in grating-coupled hyperbolic metamaterials
Hyperbolic metamaterials (HMMs) are anisotropic optical materials supporting highly confined propagating electromagnetic modes. However, it is challenging to tailor and excite these modes at optical frequencies by prism coupling because of the unavailability of high refractive index prisms for match...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2020-07-01
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| Series: | APL Photonics |
| Online Access: | http://dx.doi.org/10.1063/5.0008687 |
| _version_ | 1828190424962957312 |
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| author | Nicolò Maccaferri Tommi Isoniemi Michael Hinczewski Marzia Iarossi Giuseppe Strangi Francesco De Angelis |
| author_facet | Nicolò Maccaferri Tommi Isoniemi Michael Hinczewski Marzia Iarossi Giuseppe Strangi Francesco De Angelis |
| author_sort | Nicolò Maccaferri |
| collection | DOAJ |
| description | Hyperbolic metamaterials (HMMs) are anisotropic optical materials supporting highly confined propagating electromagnetic modes. However, it is challenging to tailor and excite these modes at optical frequencies by prism coupling because of the unavailability of high refractive index prisms for matching the momentum between the incident light and the guided modes. Here, we report on the mechanism of excitation of high-index Bloch plasmon polariton modes with sub-diffraction spatial confinement using a meta-grating, which is a combined structure of a metallic diffraction grating and a type II HMM. We show how a one-dimensional plasmonic grating without any mode in the infrared spectral range, if coupled to an HMM supporting high-index modes, can efficiently enable the excitation of these modes via coupling to far-field radiation. Our theoretical predictions are confirmed by experimental reflection measurements as a function of angle of incidence and excitation wavelength. We introduce design principles to achieve a full control of high-index modes in meta-gratings, thus enabling a better understanding of light–matter interaction in this type of hybrid structure. The exploitation of the spectral response of these modes can find applications in bio-chemical sensing, integrated optics, and optical sub-wavelength imaging. |
| first_indexed | 2024-04-12T08:22:16Z |
| format | Article |
| id | doaj.art-8d34ff3e57ca450dab7173f5ab39cffd |
| institution | Directory Open Access Journal |
| issn | 2378-0967 |
| language | English |
| last_indexed | 2024-04-12T08:22:16Z |
| publishDate | 2020-07-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | APL Photonics |
| spelling | doaj.art-8d34ff3e57ca450dab7173f5ab39cffd2022-12-22T03:40:32ZengAIP Publishing LLCAPL Photonics2378-09672020-07-0157076109076109-910.1063/5.0008687Designer Bloch plasmon polariton dispersion in grating-coupled hyperbolic metamaterialsNicolò Maccaferri0Tommi Isoniemi1Michael Hinczewski2Marzia Iarossi3Giuseppe Strangi4Francesco De Angelis5Department of Physics and Materials Science, University of Luxembourg, L-1511 Luxembourg, LuxembourgIstituto Italiano di Tecnologia, I-16163 Genova, ItalyDepartment of Physics, Case Western Reserve University, Cleveland, Ohio 44106, USAIstituto Italiano di Tecnologia, I-16163 Genova, ItalyDepartment of Physics, Case Western Reserve University, Cleveland, Ohio 44106, USAIstituto Italiano di Tecnologia, I-16163 Genova, ItalyHyperbolic metamaterials (HMMs) are anisotropic optical materials supporting highly confined propagating electromagnetic modes. However, it is challenging to tailor and excite these modes at optical frequencies by prism coupling because of the unavailability of high refractive index prisms for matching the momentum between the incident light and the guided modes. Here, we report on the mechanism of excitation of high-index Bloch plasmon polariton modes with sub-diffraction spatial confinement using a meta-grating, which is a combined structure of a metallic diffraction grating and a type II HMM. We show how a one-dimensional plasmonic grating without any mode in the infrared spectral range, if coupled to an HMM supporting high-index modes, can efficiently enable the excitation of these modes via coupling to far-field radiation. Our theoretical predictions are confirmed by experimental reflection measurements as a function of angle of incidence and excitation wavelength. We introduce design principles to achieve a full control of high-index modes in meta-gratings, thus enabling a better understanding of light–matter interaction in this type of hybrid structure. The exploitation of the spectral response of these modes can find applications in bio-chemical sensing, integrated optics, and optical sub-wavelength imaging.http://dx.doi.org/10.1063/5.0008687 |
| spellingShingle | Nicolò Maccaferri Tommi Isoniemi Michael Hinczewski Marzia Iarossi Giuseppe Strangi Francesco De Angelis Designer Bloch plasmon polariton dispersion in grating-coupled hyperbolic metamaterials APL Photonics |
| title | Designer Bloch plasmon polariton dispersion in grating-coupled hyperbolic metamaterials |
| title_full | Designer Bloch plasmon polariton dispersion in grating-coupled hyperbolic metamaterials |
| title_fullStr | Designer Bloch plasmon polariton dispersion in grating-coupled hyperbolic metamaterials |
| title_full_unstemmed | Designer Bloch plasmon polariton dispersion in grating-coupled hyperbolic metamaterials |
| title_short | Designer Bloch plasmon polariton dispersion in grating-coupled hyperbolic metamaterials |
| title_sort | designer bloch plasmon polariton dispersion in grating coupled hyperbolic metamaterials |
| url | http://dx.doi.org/10.1063/5.0008687 |
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