High-harmonic spectroscopy of solids driven by structured light
Understanding high-order harmonic generation (HHG) from solid targets holds the key of potential technological innovations in the field of high-frequency coherent sources. Solids present optical nonlinearities at lower driving intensities, and harmonics can be efficiently emitted due to the increase...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2023-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | https://www.epj-conferences.org/articles/epjconf/pdf/2023/13/epjconf_eosam2023_11006.pdf |
| _version_ | 1827768506546913280 |
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| author | García-Cabrera Ana Boyero-García Roberto Zurrón-Cifuentes Óscar Serrano Javier Román Julio San Hernández-García, Carlos Plaja Luis |
| author_facet | García-Cabrera Ana Boyero-García Roberto Zurrón-Cifuentes Óscar Serrano Javier Román Julio San Hernández-García, Carlos Plaja Luis |
| author_sort | García-Cabrera Ana |
| collection | DOAJ |
| description | Understanding high-order harmonic generation (HHG) from solid targets holds the key of potential technological innovations in the field of high-frequency coherent sources. Solids present optical nonlinearities at lower driving intensities, and harmonics can be efficiently emitted due to the increased electron density in comparison with the atomic and molecular counterparts. In addition, crystalline solids introduce a new complexity, as symmetries play a role in the anisotropic character of the optical response. An extraordinary playground is, therefore, the scenario in which solids are driven by vector beams, since crystal symmetries can be directly coupled with the topology of the driving laser beam. In this contribution we analyze the topological properties of the HHG radiation emitted by a single-layer graphene sheet driven by a vector beam. We show that the harmonic field is a complex combination of vortices, whose geometrical properties hold information about the details of the non-linear response of the crystal. We demonstrate, therefore, that the analysis of the topological structure of the harmonic field can be used as a spectroscopic measurement technique, paving the way of topological spectroscopy as a new strategy for the characterization of the optical response of macroscopic targets. |
| first_indexed | 2024-03-11T12:14:07Z |
| format | Article |
| id | doaj.art-c616dda4d4ac42dc895520a40f2e28c3 |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-03-11T12:14:07Z |
| publishDate | 2023-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-c616dda4d4ac42dc895520a40f2e28c32023-11-07T10:20:41ZengEDP SciencesEPJ Web of Conferences2100-014X2023-01-012871100610.1051/epjconf/202328711006epjconf_eosam2023_11006High-harmonic spectroscopy of solids driven by structured lightGarcía-Cabrera Ana0Boyero-García Roberto1Zurrón-Cifuentes Óscar2Serrano Javier3Román Julio San4Hernández-García, Carlos5Plaja Luis6Grupo de Investigación en Aplicaciones del Láser y Fotónica (ALF). Universidad de SalamancaGrupo de Investigación en Aplicaciones del Láser y Fotónica (ALF). Universidad de SalamancaGrupo de Investigación en Aplicaciones del Láser y Fotónica (ALF). Universidad de SalamancaGrupo de Investigación en Aplicaciones del Láser y Fotónica (ALF). Universidad de SalamancaGrupo de Investigación en Aplicaciones del Láser y Fotónica (ALF). Universidad de SalamancaGrupo de Investigación en Aplicaciones del Láser y Fotónica (ALF). Universidad de SalamancaGrupo de Investigación en Aplicaciones del Láser y Fotónica (ALF). Universidad de SalamancaUnderstanding high-order harmonic generation (HHG) from solid targets holds the key of potential technological innovations in the field of high-frequency coherent sources. Solids present optical nonlinearities at lower driving intensities, and harmonics can be efficiently emitted due to the increased electron density in comparison with the atomic and molecular counterparts. In addition, crystalline solids introduce a new complexity, as symmetries play a role in the anisotropic character of the optical response. An extraordinary playground is, therefore, the scenario in which solids are driven by vector beams, since crystal symmetries can be directly coupled with the topology of the driving laser beam. In this contribution we analyze the topological properties of the HHG radiation emitted by a single-layer graphene sheet driven by a vector beam. We show that the harmonic field is a complex combination of vortices, whose geometrical properties hold information about the details of the non-linear response of the crystal. We demonstrate, therefore, that the analysis of the topological structure of the harmonic field can be used as a spectroscopic measurement technique, paving the way of topological spectroscopy as a new strategy for the characterization of the optical response of macroscopic targets.https://www.epj-conferences.org/articles/epjconf/pdf/2023/13/epjconf_eosam2023_11006.pdf |
| spellingShingle | García-Cabrera Ana Boyero-García Roberto Zurrón-Cifuentes Óscar Serrano Javier Román Julio San Hernández-García, Carlos Plaja Luis High-harmonic spectroscopy of solids driven by structured light EPJ Web of Conferences |
| title | High-harmonic spectroscopy of solids driven by structured light |
| title_full | High-harmonic spectroscopy of solids driven by structured light |
| title_fullStr | High-harmonic spectroscopy of solids driven by structured light |
| title_full_unstemmed | High-harmonic spectroscopy of solids driven by structured light |
| title_short | High-harmonic spectroscopy of solids driven by structured light |
| title_sort | high harmonic spectroscopy of solids driven by structured light |
| url | https://www.epj-conferences.org/articles/epjconf/pdf/2023/13/epjconf_eosam2023_11006.pdf |
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