XUV plasmonic waveguides by near-zero index heterostructures
The lack of transmissive photonic components in the extreme ultraviolet (XUV) constitutes a challenge for micro/nano-metric confinement. Here, we theoretically design a novel approach to attain XUV radiation guidance based on the electromagnetic properties of titanium–aluminum–titanium heterostructu...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2023-01-01
|
| Series: | JPhys Photonics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2515-7647/acf257 |
| _version_ | 1797683785510158336 |
|---|---|
| author | Luca Assogna Carino Ferrante Alessandro Ciattoni Andrea Marini |
| author_facet | Luca Assogna Carino Ferrante Alessandro Ciattoni Andrea Marini |
| author_sort | Luca Assogna |
| collection | DOAJ |
| description | The lack of transmissive photonic components in the extreme ultraviolet (XUV) constitutes a challenge for micro/nano-metric confinement. Here, we theoretically design a novel approach to attain XUV radiation guidance based on the electromagnetic properties of titanium–aluminum–titanium heterostructures in such a spectral domain. We show that, thanks to the near-zero-index properties of aluminum and titanium, XUV radiation can couple efficiently with plasma oscillations in such heterostructures, enabling the excitation of several distinct plasmon polariton modes. Our predictions, based on the semi-analytical solution of fully vectorial Maxwell’s equations, indicate that the dispersion profile of plasmon polariton modes can get efficiently modulated by the aluminum thickness, enabling nanometer confinement and micrometre propagation length. Moreover, we quantify the third-order nonlinearity enhancement factor, finding that it is resonant at the zero-index wavelength. Our results are promising for the development of future devices enabling advanced control and manipulation of XUV radiation. |
| first_indexed | 2024-03-12T00:19:53Z |
| format | Article |
| id | doaj.art-0ede1a0f9b214930a32bf1eea7a34f6e |
| institution | Directory Open Access Journal |
| issn | 2515-7647 |
| language | English |
| last_indexed | 2024-03-12T00:19:53Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | JPhys Photonics |
| spelling | doaj.art-0ede1a0f9b214930a32bf1eea7a34f6e2023-09-15T13:35:05ZengIOP PublishingJPhys Photonics2515-76472023-01-015404500110.1088/2515-7647/acf257XUV plasmonic waveguides by near-zero index heterostructuresLuca Assogna0Carino Ferrante1Alessandro Ciattoni2Andrea Marini3https://orcid.org/0000-0003-2763-6394Department of Physical and Chemical Sciences, University of L’Aquila , Via Vetoio, 67100 L’Aquila, ItalyCNR-SPIN, c/o Dip.to di Scienze Fisiche e Chimiche , Via Vetoio, 67100 Coppito (L’Aquila), ItalyCNR-SPIN, c/o Dip.to di Scienze Fisiche e Chimiche , Via Vetoio, 67100 Coppito (L’Aquila), ItalyDepartment of Physical and Chemical Sciences, University of L’Aquila , Via Vetoio, 67100 L’Aquila, Italy; CNR-SPIN, c/o Dip.to di Scienze Fisiche e Chimiche , Via Vetoio, 67100 Coppito (L’Aquila), ItalyThe lack of transmissive photonic components in the extreme ultraviolet (XUV) constitutes a challenge for micro/nano-metric confinement. Here, we theoretically design a novel approach to attain XUV radiation guidance based on the electromagnetic properties of titanium–aluminum–titanium heterostructures in such a spectral domain. We show that, thanks to the near-zero-index properties of aluminum and titanium, XUV radiation can couple efficiently with plasma oscillations in such heterostructures, enabling the excitation of several distinct plasmon polariton modes. Our predictions, based on the semi-analytical solution of fully vectorial Maxwell’s equations, indicate that the dispersion profile of plasmon polariton modes can get efficiently modulated by the aluminum thickness, enabling nanometer confinement and micrometre propagation length. Moreover, we quantify the third-order nonlinearity enhancement factor, finding that it is resonant at the zero-index wavelength. Our results are promising for the development of future devices enabling advanced control and manipulation of XUV radiation.https://doi.org/10.1088/2515-7647/acf257nanophotonicsepsilon-near-zero materialsXUV radiation |
| spellingShingle | Luca Assogna Carino Ferrante Alessandro Ciattoni Andrea Marini XUV plasmonic waveguides by near-zero index heterostructures JPhys Photonics nanophotonics epsilon-near-zero materials XUV radiation |
| title | XUV plasmonic waveguides by near-zero index heterostructures |
| title_full | XUV plasmonic waveguides by near-zero index heterostructures |
| title_fullStr | XUV plasmonic waveguides by near-zero index heterostructures |
| title_full_unstemmed | XUV plasmonic waveguides by near-zero index heterostructures |
| title_short | XUV plasmonic waveguides by near-zero index heterostructures |
| title_sort | xuv plasmonic waveguides by near zero index heterostructures |
| topic | nanophotonics epsilon-near-zero materials XUV radiation |
| url | https://doi.org/10.1088/2515-7647/acf257 |
| work_keys_str_mv | AT lucaassogna xuvplasmonicwaveguidesbynearzeroindexheterostructures AT carinoferrante xuvplasmonicwaveguidesbynearzeroindexheterostructures AT alessandrociattoni xuvplasmonicwaveguidesbynearzeroindexheterostructures AT andreamarini xuvplasmonicwaveguidesbynearzeroindexheterostructures |