Tailoring spatiotemporal wavepackets via two-dimensional space-time duality
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arXiv
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866909103228452864 |
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| author | Chen, Wei Yu, Anzhuo Zhou, Zhou Ma, Lingling Wang, Zeyu Yang, Jiachen Qiu, Chengwei Lu, Yanqing |
| author_facet | Chen, Wei Yu, Anzhuo Zhou, Zhou Ma, Lingling Wang, Zeyu Yang, Jiachen Qiu, Chengwei Lu, Yanqing |
| contents | Space-time (ST) beams, ultrafast optical wavepackets with customized spatial and temporal characteristics, present a significant contrast to conventional spatial-structured light and hold the potential to revolutionize our understanding and manipulation of light. However, the progress in ST beam research has been constrained by the absence of a universal framework for their analysis and generation. Here, we introduce the concept of "two-dimensional ST duality", establishing a foundational duality between spatial-structured light and ST beams. We show that breaking the exact balance between paraxial diffraction and narrow-band dispersion is crucial for guiding the dynamics of ST wavepackets. Leveraging this insight, we pioneer a versatile complex-amplitude modulation strategy, enabling the precise crafting of ST beams with an exceptional fidelity exceeding 97%. Furthermore, we uncover a new range of ST wavepackets by harnessing the exact one-to-one relationship between scalar spatial-structured light and ST beams. Our findings suggest a paradigm shift opportunity in ST beam research and may apply to a broader range of wave physics systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_07794 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Tailoring spatiotemporal wavepackets via two-dimensional space-time duality Chen, Wei Yu, Anzhuo Zhou, Zhou Ma, Lingling Wang, Zeyu Yang, Jiachen Qiu, Chengwei Lu, Yanqing Optics Space-time (ST) beams, ultrafast optical wavepackets with customized spatial and temporal characteristics, present a significant contrast to conventional spatial-structured light and hold the potential to revolutionize our understanding and manipulation of light. However, the progress in ST beam research has been constrained by the absence of a universal framework for their analysis and generation. Here, we introduce the concept of "two-dimensional ST duality", establishing a foundational duality between spatial-structured light and ST beams. We show that breaking the exact balance between paraxial diffraction and narrow-band dispersion is crucial for guiding the dynamics of ST wavepackets. Leveraging this insight, we pioneer a versatile complex-amplitude modulation strategy, enabling the precise crafting of ST beams with an exceptional fidelity exceeding 97%. Furthermore, we uncover a new range of ST wavepackets by harnessing the exact one-to-one relationship between scalar spatial-structured light and ST beams. Our findings suggest a paradigm shift opportunity in ST beam research and may apply to a broader range of wave physics systems. |
| title | Tailoring spatiotemporal wavepackets via two-dimensional space-time duality |
| topic | Optics |
| url | https://arxiv.org/abs/2402.07794 |