Plasma Micro-Cavity of Terahertz Wave During Laser Filamentation
In this work, we focused on the resonant cavity effect of the air plasma, formed during femtosecond laser filamentation, on the near- and far-field profiles of the generated terahertz (THz) radiation. Via the method of ray tracing, it has been demonstrated that both on-axis propagation and conical f...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2019-01-01
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| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/8789493/ |
| _version_ | 1818715827301515264 |
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| author | Chang Liu Yamin Chen Jiayu Zhao Liezhi Tang Yan Peng Yiming Zhu |
| author_facet | Chang Liu Yamin Chen Jiayu Zhao Liezhi Tang Yan Peng Yiming Zhu |
| author_sort | Chang Liu |
| collection | DOAJ |
| description | In this work, we focused on the resonant cavity effect of the air plasma, formed during femtosecond laser filamentation, on the near- and far-field profiles of the generated terahertz (THz) radiation. Via the method of ray tracing, it has been demonstrated that both on-axis propagation and conical forward emission of THz wave could be qualitatively interpreted in case of considering the filament as a Fabry-Perot-like micro-cavity with radial step refractive index distribution in THz domain. Our theory might potentially solve the contradictions of different experimental observations on THz spatial profiles reported in publications, and renew the understanding of THz wave propagation inside the filament plasma column. |
| first_indexed | 2024-12-17T19:09:33Z |
| format | Article |
| id | doaj.art-732b4228f52447aba86576994665da5e |
| institution | Directory Open Access Journal |
| issn | 1943-0655 |
| language | English |
| last_indexed | 2024-12-17T19:09:33Z |
| publishDate | 2019-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj.art-732b4228f52447aba86576994665da5e2022-12-21T21:35:54ZengIEEEIEEE Photonics Journal1943-06552019-01-0111411410.1109/JPHOT.2019.29335008789493Plasma Micro-Cavity of Terahertz Wave During Laser FilamentationChang Liu0Yamin Chen1Jiayu Zhao2https://orcid.org/0000-0002-7188-8508Liezhi Tang3Yan Peng4Yiming Zhu5https://orcid.org/0000-0003-2353-5713Shanghai Key Laboratory of Modern Optical System, School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai, ChinaShanghai Key Laboratory of Modern Optical System, School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai, ChinaShanghai Key Laboratory of Modern Optical System, School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai, ChinaShanghai Key Laboratory of Modern Optical System, School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai, ChinaShanghai Key Laboratory of Modern Optical System, School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai, ChinaShanghai Key Laboratory of Modern Optical System, School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai, ChinaIn this work, we focused on the resonant cavity effect of the air plasma, formed during femtosecond laser filamentation, on the near- and far-field profiles of the generated terahertz (THz) radiation. Via the method of ray tracing, it has been demonstrated that both on-axis propagation and conical forward emission of THz wave could be qualitatively interpreted in case of considering the filament as a Fabry-Perot-like micro-cavity with radial step refractive index distribution in THz domain. Our theory might potentially solve the contradictions of different experimental observations on THz spatial profiles reported in publications, and renew the understanding of THz wave propagation inside the filament plasma column.https://ieeexplore.ieee.org/document/8789493/Single-color filamentationplasmamicro-cavityterahertz wave. |
| spellingShingle | Chang Liu Yamin Chen Jiayu Zhao Liezhi Tang Yan Peng Yiming Zhu Plasma Micro-Cavity of Terahertz Wave During Laser Filamentation IEEE Photonics Journal Single-color filamentation plasma micro-cavity terahertz wave. |
| title | Plasma Micro-Cavity of Terahertz Wave During Laser Filamentation |
| title_full | Plasma Micro-Cavity of Terahertz Wave During Laser Filamentation |
| title_fullStr | Plasma Micro-Cavity of Terahertz Wave During Laser Filamentation |
| title_full_unstemmed | Plasma Micro-Cavity of Terahertz Wave During Laser Filamentation |
| title_short | Plasma Micro-Cavity of Terahertz Wave During Laser Filamentation |
| title_sort | plasma micro cavity of terahertz wave during laser filamentation |
| topic | Single-color filamentation plasma micro-cavity terahertz wave. |
| url | https://ieeexplore.ieee.org/document/8789493/ |
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