Space-time couplings in ultrashort lasers with arbitrary nonparaxial focusing
Space-time separability is commonly assumed in the theoretical description of laser beams. However, recent progresses have demonstrated that this assumption often breaks down for ultrashort realistic pulses, giving rise to spatio-temporal effects that modify both the spatial and temporal characteris...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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De Gruyter
2025-01-01
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| Series: | Nanophotonics |
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| Online Access: | https://doi.org/10.1515/nanoph-2024-0616 |
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| author | Jolly Spencer W. Lytova Marianna Vallières Simon Légaré François MacLean Steve Fillion-Gourdeau François |
| author_facet | Jolly Spencer W. Lytova Marianna Vallières Simon Légaré François MacLean Steve Fillion-Gourdeau François |
| author_sort | Jolly Spencer W. |
| collection | DOAJ |
| description | Space-time separability is commonly assumed in the theoretical description of laser beams. However, recent progresses have demonstrated that this assumption often breaks down for ultrashort realistic pulses, giving rise to spatio-temporal effects that modify both the spatial and temporal characteristics of the laser field. In this work, we introduce semi-analytical and numerical diffraction integral models to investigate these spatio-temporal effects in tightly focused configurations. In particular, we investigate how the TM01 beam mode is modified at the focus by chromatic angular dispersion, curvature, and spatial chirp. We compare the two formalisms, thus creating a toolset for modeling extreme localization of structured electromagnetic beams in time and space. |
| format | Article |
| id | doaj-art-eb2e2871d5c64832a931cd198b84d813 |
| institution | DOAJ |
| issn | 2192-8614 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj-art-eb2e2871d5c64832a931cd198b84d8132025-08-20T03:17:56ZengDe GruyterNanophotonics2192-86142025-01-0114681583210.1515/nanoph-2024-0616Space-time couplings in ultrashort lasers with arbitrary nonparaxial focusingJolly Spencer W.0Lytova Marianna1Vallières Simon2Légaré François3MacLean Steve4Fillion-Gourdeau François5Service OPERA-Photonique, 26659Université libre de Bruxelles (ULB), Brussels, BelgiumAdvanced Laser Light Source (ALLS) at INRS-EMT, 1650 boulevard Lionel-Boulet, Varennes, QC, J3X 1P7, CanadaAdvanced Laser Light Source (ALLS) at INRS-EMT, 1650 boulevard Lionel-Boulet, Varennes, QC, J3X 1P7, CanadaAdvanced Laser Light Source (ALLS) at INRS-EMT, 1650 boulevard Lionel-Boulet, Varennes, QC, J3X 1P7, CanadaAdvanced Laser Light Source (ALLS) at INRS-EMT, 1650 boulevard Lionel-Boulet, Varennes, QC, J3X 1P7, CanadaAdvanced Laser Light Source (ALLS) at INRS-EMT, 1650 boulevard Lionel-Boulet, Varennes, QC, J3X 1P7, CanadaSpace-time separability is commonly assumed in the theoretical description of laser beams. However, recent progresses have demonstrated that this assumption often breaks down for ultrashort realistic pulses, giving rise to spatio-temporal effects that modify both the spatial and temporal characteristics of the laser field. In this work, we introduce semi-analytical and numerical diffraction integral models to investigate these spatio-temporal effects in tightly focused configurations. In particular, we investigate how the TM01 beam mode is modified at the focus by chromatic angular dispersion, curvature, and spatial chirp. We compare the two formalisms, thus creating a toolset for modeling extreme localization of structured electromagnetic beams in time and space.https://doi.org/10.1515/nanoph-2024-0616spatio-temporal couplingstightly focused fieldschromatic aberrationsultrashort lasers |
| spellingShingle | Jolly Spencer W. Lytova Marianna Vallières Simon Légaré François MacLean Steve Fillion-Gourdeau François Space-time couplings in ultrashort lasers with arbitrary nonparaxial focusing Nanophotonics spatio-temporal couplings tightly focused fields chromatic aberrations ultrashort lasers |
| title | Space-time couplings in ultrashort lasers with arbitrary nonparaxial focusing |
| title_full | Space-time couplings in ultrashort lasers with arbitrary nonparaxial focusing |
| title_fullStr | Space-time couplings in ultrashort lasers with arbitrary nonparaxial focusing |
| title_full_unstemmed | Space-time couplings in ultrashort lasers with arbitrary nonparaxial focusing |
| title_short | Space-time couplings in ultrashort lasers with arbitrary nonparaxial focusing |
| title_sort | space time couplings in ultrashort lasers with arbitrary nonparaxial focusing |
| topic | spatio-temporal couplings tightly focused fields chromatic aberrations ultrashort lasers |
| url | https://doi.org/10.1515/nanoph-2024-0616 |
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