Boosting the efficiency of narrowband THz radiators via three-dimensional emission collection
The demand for high-power, narrowband, and tunable THz radiation sources is steadily increasing. Smith-Purcell radiation offers a compact method for resonantly generating narrowband THz sources with notable advantages over other approaches, though the power output still requires improvement. This wo...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2025-05-01
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| Series: | Physical Review Accelerators and Beams |
| Online Access: | http://doi.org/10.1103/PhysRevAccelBeams.28.054501 |
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| author | Tinglian Zhang Rasmus Ischebeck Uwe Niedermayer Thomas Schietinger Pavle Juranić |
| author_facet | Tinglian Zhang Rasmus Ischebeck Uwe Niedermayer Thomas Schietinger Pavle Juranić |
| author_sort | Tinglian Zhang |
| collection | DOAJ |
| description | The demand for high-power, narrowband, and tunable THz radiation sources is steadily increasing. Smith-Purcell radiation offers a compact method for resonantly generating narrowband THz sources with notable advantages over other approaches, though the power output still requires improvement. This work introduces a novel 3D emission-collection concept that enhances the efficiency of THz radiators, achieving an enhancement of over an order of magnitude in coherent radiation power compared to the 2D approach. Systematic simulations reveal that the single-layer helically rotated structure, optimized through inverse design, emits stronger THz radiation than other reported circumferentially closed gratings, achieving millijoule radiated energy. Helix gratings exhibit significant potential for developing accelerator-based high-power and tunable THz radiators and are easy to manufacture. Some methods concerning optimizing beam-grating properties are employed to improve the radiated THz intensity. These results provide new insights into developing high-power THz radiators, which may provide an alternative THz source for free-electron laser facilities. |
| format | Article |
| id | doaj-art-fa936b77c2f04996a92a0c3acd5cdb1e |
| institution | OA Journals |
| issn | 2469-9888 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Accelerators and Beams |
| spelling | doaj-art-fa936b77c2f04996a92a0c3acd5cdb1e2025-08-20T01:48:12ZengAmerican Physical SocietyPhysical Review Accelerators and Beams2469-98882025-05-0128505450110.1103/PhysRevAccelBeams.28.054501Boosting the efficiency of narrowband THz radiators via three-dimensional emission collectionTinglian ZhangRasmus IschebeckUwe NiedermayerThomas SchietingerPavle JuranićThe demand for high-power, narrowband, and tunable THz radiation sources is steadily increasing. Smith-Purcell radiation offers a compact method for resonantly generating narrowband THz sources with notable advantages over other approaches, though the power output still requires improvement. This work introduces a novel 3D emission-collection concept that enhances the efficiency of THz radiators, achieving an enhancement of over an order of magnitude in coherent radiation power compared to the 2D approach. Systematic simulations reveal that the single-layer helically rotated structure, optimized through inverse design, emits stronger THz radiation than other reported circumferentially closed gratings, achieving millijoule radiated energy. Helix gratings exhibit significant potential for developing accelerator-based high-power and tunable THz radiators and are easy to manufacture. Some methods concerning optimizing beam-grating properties are employed to improve the radiated THz intensity. These results provide new insights into developing high-power THz radiators, which may provide an alternative THz source for free-electron laser facilities.http://doi.org/10.1103/PhysRevAccelBeams.28.054501 |
| spellingShingle | Tinglian Zhang Rasmus Ischebeck Uwe Niedermayer Thomas Schietinger Pavle Juranić Boosting the efficiency of narrowband THz radiators via three-dimensional emission collection Physical Review Accelerators and Beams |
| title | Boosting the efficiency of narrowband THz radiators via three-dimensional emission collection |
| title_full | Boosting the efficiency of narrowband THz radiators via three-dimensional emission collection |
| title_fullStr | Boosting the efficiency of narrowband THz radiators via three-dimensional emission collection |
| title_full_unstemmed | Boosting the efficiency of narrowband THz radiators via three-dimensional emission collection |
| title_short | Boosting the efficiency of narrowband THz radiators via three-dimensional emission collection |
| title_sort | boosting the efficiency of narrowband thz radiators via three dimensional emission collection |
| url | http://doi.org/10.1103/PhysRevAccelBeams.28.054501 |
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