The Transformation from Surface Wave into Radiation Wave Using Composite Subwavelength Holes Array
Smith–Purcell radiation (SPR) is a phenomenon in that free electrons moving above a periodic structure deliver a part of their kinetic energies to electromagnetic waves. It plays an important role in the development of radiation sources and beam diagnosis. With the development of nanofabrication tec...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley-VCH
2022-10-01
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| Series: | Advanced Photonics Research |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/adpr.202100358 |
| _version_ | 1811229330319081472 |
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| author | Ping Zhang Jing Shu Yilin Pan Hongyang Guo Shengpeng Yang Shaomeng Wang Yong Yin Lin Meng Yubin Gong |
| author_facet | Ping Zhang Jing Shu Yilin Pan Hongyang Guo Shengpeng Yang Shaomeng Wang Yong Yin Lin Meng Yubin Gong |
| author_sort | Ping Zhang |
| collection | DOAJ |
| description | Smith–Purcell radiation (SPR) is a phenomenon in that free electrons moving above a periodic structure deliver a part of their kinetic energies to electromagnetic waves. It plays an important role in the development of radiation sources and beam diagnosis. With the development of nanofabrication technology, various complex micro‐nano‐metallic periodic or aperiodic structures have been adopted to improve the efficiency and coherence of SPR. In general, when free electrons move above the metallic periodic structure, the localized surface wave and Smith–Purcell radiation wave are excited simultaneously. As the frequency of the surface wave is always lower than the threshold of Smith–Purcell radiation, the surface wave cannot be radiated. Here, the surface wave is transformed into SPR by using a novel composite subwavelength hole array, thus the SPR is enhanced and it becomes coherent and easy to tune. This work provides a competitive approach to achieve a coherent and high‐efficiency THz radiation source. |
| first_indexed | 2024-04-12T10:12:52Z |
| format | Article |
| id | doaj.art-f08737d319994c9887ba7214964af017 |
| institution | Directory Open Access Journal |
| issn | 2699-9293 |
| language | English |
| last_indexed | 2024-04-12T10:12:52Z |
| publishDate | 2022-10-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Photonics Research |
| spelling | doaj.art-f08737d319994c9887ba7214964af0172022-12-22T03:37:16ZengWiley-VCHAdvanced Photonics Research2699-92932022-10-01310n/an/a10.1002/adpr.202100358The Transformation from Surface Wave into Radiation Wave Using Composite Subwavelength Holes ArrayPing Zhang0Jing Shu1Yilin Pan2Hongyang Guo3Shengpeng Yang4Shaomeng Wang5Yong Yin6Lin Meng7Yubin Gong8School of Electronic Science and Engineering University of Electronic Science and Technology of China Chengdu 610054 ChinaSchool of Electronic Science and Engineering University of Electronic Science and Technology of China Chengdu 610054 ChinaSchool of Electronic Science and Engineering University of Electronic Science and Technology of China Chengdu 610054 ChinaSchool of Electronic Science and Engineering University of Electronic Science and Technology of China Chengdu 610054 ChinaSchool of Electronic Science and Engineering University of Electronic Science and Technology of China Chengdu 610054 ChinaSchool of Electronic Science and Engineering University of Electronic Science and Technology of China Chengdu 610054 ChinaSchool of Electronic Science and Engineering University of Electronic Science and Technology of China Chengdu 610054 ChinaSchool of Electronic Science and Engineering University of Electronic Science and Technology of China Chengdu 610054 ChinaSchool of Electronic Science and Engineering University of Electronic Science and Technology of China Chengdu 610054 ChinaSmith–Purcell radiation (SPR) is a phenomenon in that free electrons moving above a periodic structure deliver a part of their kinetic energies to electromagnetic waves. It plays an important role in the development of radiation sources and beam diagnosis. With the development of nanofabrication technology, various complex micro‐nano‐metallic periodic or aperiodic structures have been adopted to improve the efficiency and coherence of SPR. In general, when free electrons move above the metallic periodic structure, the localized surface wave and Smith–Purcell radiation wave are excited simultaneously. As the frequency of the surface wave is always lower than the threshold of Smith–Purcell radiation, the surface wave cannot be radiated. Here, the surface wave is transformed into SPR by using a novel composite subwavelength hole array, thus the SPR is enhanced and it becomes coherent and easy to tune. This work provides a competitive approach to achieve a coherent and high‐efficiency THz radiation source.https://doi.org/10.1002/adpr.202100358diffraction radiationsubwavelength hole arraysurface wave |
| spellingShingle | Ping Zhang Jing Shu Yilin Pan Hongyang Guo Shengpeng Yang Shaomeng Wang Yong Yin Lin Meng Yubin Gong The Transformation from Surface Wave into Radiation Wave Using Composite Subwavelength Holes Array Advanced Photonics Research diffraction radiation subwavelength hole array surface wave |
| title | The Transformation from Surface Wave into Radiation Wave Using Composite Subwavelength Holes Array |
| title_full | The Transformation from Surface Wave into Radiation Wave Using Composite Subwavelength Holes Array |
| title_fullStr | The Transformation from Surface Wave into Radiation Wave Using Composite Subwavelength Holes Array |
| title_full_unstemmed | The Transformation from Surface Wave into Radiation Wave Using Composite Subwavelength Holes Array |
| title_short | The Transformation from Surface Wave into Radiation Wave Using Composite Subwavelength Holes Array |
| title_sort | transformation from surface wave into radiation wave using composite subwavelength holes array |
| topic | diffraction radiation subwavelength hole array surface wave |
| url | https://doi.org/10.1002/adpr.202100358 |
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