Parabolic Mirror Focusing of Spatiotemporally Coupled Ultrashort Terahertz Pulses
Ultrashort terahertz (THz) beam is often affected by spatio-temporal distortion due to its long wavelength, and this spatio-temporal coupling will degrade the focusing effect. Here, we develop a numerical model for calculating the vector focusing of ultrashort pulses with arbitrary spatial and tempo...
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| Format: | Article |
| Language: | English |
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IEEE
2023-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/10157985/ |
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| author | Haoran Zhang Cheng Li Zixin Guo Xiazhen Xu Jingya Li Biaobin Li Zhigang He Shancai Zhang Qika Jia |
| author_facet | Haoran Zhang Cheng Li Zixin Guo Xiazhen Xu Jingya Li Biaobin Li Zhigang He Shancai Zhang Qika Jia |
| author_sort | Haoran Zhang |
| collection | DOAJ |
| description | Ultrashort terahertz (THz) beam is often affected by spatio-temporal distortion due to its long wavelength, and this spatio-temporal coupling will degrade the focusing effect. Here, we develop a numerical model for calculating the vector focusing of ultrashort pulses with arbitrary spatial and temporal distribution, which adopt the vector diffraction integral and coherent spectrum superposition methods. Leveraging it, the focusing of a broadband pulse can be characterized together with its vector characteristics and we explore the influences of multifarious spatio-temporal couplings on the focusing of ultrashort THz pulses. In addition, the possibility of focusing the ultrashort THz radiation from an undulator to 1 GV/m is also discussed. This will provide further guidance for the non-equilibrium state of matter induced by ultrashort strong-field THz pulses. |
| format | Article |
| id | doaj-art-e5bc484b4a6948a8b3b17171bcc923e5 |
| institution | Matheson Library |
| issn | 1943-0655 |
| language | English |
| publishDate | 2023-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-e5bc484b4a6948a8b3b17171bcc923e52025-07-01T23:00:21ZengIEEEIEEE Photonics Journal1943-06552023-01-011541810.1109/JPHOT.2023.328748310157985Parabolic Mirror Focusing of Spatiotemporally Coupled Ultrashort Terahertz PulsesHaoran Zhang0https://orcid.org/0000-0002-2413-2679Cheng Li1Zixin Guo2Xiazhen Xu3Jingya Li4Biaobin Li5Zhigang He6https://orcid.org/0000-0002-5332-483XShancai Zhang7Qika Jia8https://orcid.org/0000-0003-3893-512XNational Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, ChinaNational Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, ChinaNational Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, ChinaNational Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, ChinaNational Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, ChinaNational Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, ChinaNational Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, ChinaNational Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, ChinaNational Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, ChinaUltrashort terahertz (THz) beam is often affected by spatio-temporal distortion due to its long wavelength, and this spatio-temporal coupling will degrade the focusing effect. Here, we develop a numerical model for calculating the vector focusing of ultrashort pulses with arbitrary spatial and temporal distribution, which adopt the vector diffraction integral and coherent spectrum superposition methods. Leveraging it, the focusing of a broadband pulse can be characterized together with its vector characteristics and we explore the influences of multifarious spatio-temporal couplings on the focusing of ultrashort THz pulses. In addition, the possibility of focusing the ultrashort THz radiation from an undulator to 1 GV/m is also discussed. This will provide further guidance for the non-equilibrium state of matter induced by ultrashort strong-field THz pulses.https://ieeexplore.ieee.org/document/10157985/Parabolic mirror focusingspatio-temporal couplingultrashort terahertz pulsevector diffraction integral |
| spellingShingle | Haoran Zhang Cheng Li Zixin Guo Xiazhen Xu Jingya Li Biaobin Li Zhigang He Shancai Zhang Qika Jia Parabolic Mirror Focusing of Spatiotemporally Coupled Ultrashort Terahertz Pulses IEEE Photonics Journal Parabolic mirror focusing spatio-temporal coupling ultrashort terahertz pulse vector diffraction integral |
| title | Parabolic Mirror Focusing of Spatiotemporally Coupled Ultrashort Terahertz Pulses |
| title_full | Parabolic Mirror Focusing of Spatiotemporally Coupled Ultrashort Terahertz Pulses |
| title_fullStr | Parabolic Mirror Focusing of Spatiotemporally Coupled Ultrashort Terahertz Pulses |
| title_full_unstemmed | Parabolic Mirror Focusing of Spatiotemporally Coupled Ultrashort Terahertz Pulses |
| title_short | Parabolic Mirror Focusing of Spatiotemporally Coupled Ultrashort Terahertz Pulses |
| title_sort | parabolic mirror focusing of spatiotemporally coupled ultrashort terahertz pulses |
| topic | Parabolic mirror focusing spatio-temporal coupling ultrashort terahertz pulse vector diffraction integral |
| url | https://ieeexplore.ieee.org/document/10157985/ |
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