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| Hauptverfasser: | , , , , |
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| Format: | Preprint |
| Veröffentlicht: |
2023
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| Online-Zugang: | https://arxiv.org/abs/2311.18500 |
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| _version_ | 1866929269537505280 |
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| author | Nagai, Kohei Okamoto, Takuya Shinohara, Yasushi Sanada, Haruki Oguri, Katsuya |
| author_facet | Nagai, Kohei Okamoto, Takuya Shinohara, Yasushi Sanada, Haruki Oguri, Katsuya |
| contents | Symmetries essentially provide conservation rules in nonlinear light-matter interactions, that facilitate control and understanding of photon conversion processes or electron dynamics. Since anisotropic solids have rich symmetries, they are strong candidate to control both optical micro- and macroscale structures, namely spin (circular polarization) and orbital angular momentum (spiral wavefront), respectively. Here, we show structured high harmonic generation linked to the anisotropic symmetry of a solid. By strategically preserving a dynamical symmetry arising from the spin-orbit interaction of light, we generate multiple orbital angular momentum states in high-order harmonics. The experimental results exhibit the total angular momentum conservation rule of light even in the extreme nonlinear region, which is evidence that the mechanism originates from a dynamical symmetry. Our study provides a deeper understanding of multiscale nonlinear optical phenomena and a general guideline for using electronic structure to control structured light, such as through Floquet engineering. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2311_18500 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | High harmonic spin-orbit angular momentum generation in crystalline solids preserving multiscale dynamical symmetry Nagai, Kohei Okamoto, Takuya Shinohara, Yasushi Sanada, Haruki Oguri, Katsuya Optics Symmetries essentially provide conservation rules in nonlinear light-matter interactions, that facilitate control and understanding of photon conversion processes or electron dynamics. Since anisotropic solids have rich symmetries, they are strong candidate to control both optical micro- and macroscale structures, namely spin (circular polarization) and orbital angular momentum (spiral wavefront), respectively. Here, we show structured high harmonic generation linked to the anisotropic symmetry of a solid. By strategically preserving a dynamical symmetry arising from the spin-orbit interaction of light, we generate multiple orbital angular momentum states in high-order harmonics. The experimental results exhibit the total angular momentum conservation rule of light even in the extreme nonlinear region, which is evidence that the mechanism originates from a dynamical symmetry. Our study provides a deeper understanding of multiscale nonlinear optical phenomena and a general guideline for using electronic structure to control structured light, such as through Floquet engineering. |
| title | High harmonic spin-orbit angular momentum generation in crystalline solids preserving multiscale dynamical symmetry |
| topic | Optics |
| url | https://arxiv.org/abs/2311.18500 |