Metasurface-based multi-harmonic free-electron light source
© 2018, The Author(s). Metasurfaces are subwavelength spatial variations in geometry and material where the structures are of negligible thickness compared to the wavelength of light and are optimized for far-field applications, such as controlling the wavefronts of electromagnetic waves. Here, we i...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
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Springer Nature
2021
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| Online Access: | https://hdl.handle.net/1721.1/134713 |
| _version_ | 1826201987116433408 |
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| author | Rosolen, Gilles Wong, Liang Jie Rivera, Nicholas Maes, Bjorn Soljačić, Marin Kaminer, Ido |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Rosolen, Gilles Wong, Liang Jie Rivera, Nicholas Maes, Bjorn Soljačić, Marin Kaminer, Ido |
| author_sort | Rosolen, Gilles |
| collection | MIT |
| description | © 2018, The Author(s). Metasurfaces are subwavelength spatial variations in geometry and material where the structures are of negligible thickness compared to the wavelength of light and are optimized for far-field applications, such as controlling the wavefronts of electromagnetic waves. Here, we investigate the potential of the metasurface near-field profile, generated by an incident few-cycle pulse laser, to facilitate the generation of high-frequency light from free electrons. In particular, the metasurface near-field contains higher-order spatial harmonics that can be leveraged to generate multiple higher-harmonic X-ray frequency peaks. We show that the X-ray spectral profile can be arbitrarily shaped by controlling the metasurface geometry, the electron energy, and the incidence angle of the laser input. Using ab initio simulations, we predict bright and monoenergetic X-rays, achieving energies of 30 keV (with harmonics spaced by 3 keV) from 5-MeV electrons using 3.4-eV plasmon polaritons on a metasurface with a period of 85 nm. As an example, we present the design of a four-color X-ray source, a potential candidate for tabletop multicolor hard X-ray spectroscopy. Our developments could help pave the way for compact multi-harmonic sources of high-energy photons, which have potential applications in industry, medicine, and the fundamental sciences. |
| first_indexed | 2024-09-23T12:00:08Z |
| format | Article |
| id | mit-1721.1/134713 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T12:00:08Z |
| publishDate | 2021 |
| publisher | Springer Nature |
| record_format | dspace |
| spelling | mit-1721.1/1347132023-09-15T19:38:23Z Metasurface-based multi-harmonic free-electron light source Rosolen, Gilles Wong, Liang Jie Rivera, Nicholas Maes, Bjorn Soljačić, Marin Kaminer, Ido Massachusetts Institute of Technology. Department of Physics © 2018, The Author(s). Metasurfaces are subwavelength spatial variations in geometry and material where the structures are of negligible thickness compared to the wavelength of light and are optimized for far-field applications, such as controlling the wavefronts of electromagnetic waves. Here, we investigate the potential of the metasurface near-field profile, generated by an incident few-cycle pulse laser, to facilitate the generation of high-frequency light from free electrons. In particular, the metasurface near-field contains higher-order spatial harmonics that can be leveraged to generate multiple higher-harmonic X-ray frequency peaks. We show that the X-ray spectral profile can be arbitrarily shaped by controlling the metasurface geometry, the electron energy, and the incidence angle of the laser input. Using ab initio simulations, we predict bright and monoenergetic X-rays, achieving energies of 30 keV (with harmonics spaced by 3 keV) from 5-MeV electrons using 3.4-eV plasmon polaritons on a metasurface with a period of 85 nm. As an example, we present the design of a four-color X-ray source, a potential candidate for tabletop multicolor hard X-ray spectroscopy. Our developments could help pave the way for compact multi-harmonic sources of high-energy photons, which have potential applications in industry, medicine, and the fundamental sciences. 2021-10-27T20:08:48Z 2021-10-27T20:08:48Z 2018 2019-06-04T13:20:37Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/134713 en 10.1038/S41377-018-0065-2 Light: Science and Applications Creative Commons Attribution 4.0 International license https://creativecommons.org/licenses/by/4.0/ application/pdf Springer Nature Nature |
| spellingShingle | Rosolen, Gilles Wong, Liang Jie Rivera, Nicholas Maes, Bjorn Soljačić, Marin Kaminer, Ido Metasurface-based multi-harmonic free-electron light source |
| title | Metasurface-based multi-harmonic free-electron light source |
| title_full | Metasurface-based multi-harmonic free-electron light source |
| title_fullStr | Metasurface-based multi-harmonic free-electron light source |
| title_full_unstemmed | Metasurface-based multi-harmonic free-electron light source |
| title_short | Metasurface-based multi-harmonic free-electron light source |
| title_sort | metasurface based multi harmonic free electron light source |
| url | https://hdl.handle.net/1721.1/134713 |
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