Demonstration of a widely-tunable and fully-coherent high-gain harmonic-generation free-electron laser
Free-electron lasers (FELs) are fourth-generation light sources that deliver extremely high intensity, ultrashort light pulses over a broad wavelength range from far-infrared to hard x ray. FELs based on the self-amplified spontaneous emission principle have been successfully operated with ultrahigh...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2013-02-01
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| Series: | Physical Review Special Topics. Accelerators and Beams |
| Online Access: | http://doi.org/10.1103/PhysRevSTAB.16.020704 |
| _version_ | 1818287433095053312 |
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| author | B. Liu W. B. Li J. H. Chen Z. H. Chen H. X. Deng J. G. Ding Y. Fan G. P. Fang C. Feng L. Feng Q. Gu M. Gu C. Guo D. Z. Huang M. M. Huang W. H. Huang Q. K. Jia T. H. Lan Y. B. Leng D. G. Li W. M. Li X. Li G. Q. Lin L. Shang L. Shen C. X. Tang G. L. Wang L. Wang R. Wang X. T. Wang Zhan S. Wang Zhi S. Wang H. F. Yao K. R. Ye L. X. Yin L. Y. Yu J. Q. Zhang Meng Zhang Miao Zhang T. Zhang W. Y. Zhang S. P. Zhong Q. G. Zhou D. Wang Z. T. Zhao |
| author_facet | B. Liu W. B. Li J. H. Chen Z. H. Chen H. X. Deng J. G. Ding Y. Fan G. P. Fang C. Feng L. Feng Q. Gu M. Gu C. Guo D. Z. Huang M. M. Huang W. H. Huang Q. K. Jia T. H. Lan Y. B. Leng D. G. Li W. M. Li X. Li G. Q. Lin L. Shang L. Shen C. X. Tang G. L. Wang L. Wang R. Wang X. T. Wang Zhan S. Wang Zhi S. Wang H. F. Yao K. R. Ye L. X. Yin L. Y. Yu J. Q. Zhang Meng Zhang Miao Zhang T. Zhang W. Y. Zhang S. P. Zhong Q. G. Zhou D. Wang Z. T. Zhao |
| author_sort | B. Liu |
| collection | DOAJ |
| description | Free-electron lasers (FELs) are fourth-generation light sources that deliver extremely high intensity, ultrashort light pulses over a broad wavelength range from far-infrared to hard x ray. FELs based on the self-amplified spontaneous emission principle have been successfully operated with ultrahigh brightness and a broad wavelengths tuning range with good transverse coherence but poor temporal coherence. In contrast, the laser-seeded FELs have provided full coherence but at selected central wavelengths, usually the harmonics of the laser seeds, with relatively narrower tuning range. We report the experimental demonstration of a high-gain harmonic-generation (HGHG) FEL that is continuously tunable over a wide range using the combination of optical parametrical amplification, variable-gap undulator, and harmonic selection, where the temporal coherence is preserved as confirmed with the Michelson interferometry. In order to achieve higher photon energies, the first try of cascaded HGHG with a fresh-bunch technique is also made at the Shanghai Deep Ultraviolet Free-electron Laser test facility. |
| first_indexed | 2024-12-13T01:40:24Z |
| format | Article |
| id | doaj.art-f08bd06bcea04d0caa5aa436e1340d1b |
| institution | Directory Open Access Journal |
| issn | 1098-4402 |
| language | English |
| last_indexed | 2024-12-13T01:40:24Z |
| publishDate | 2013-02-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Special Topics. Accelerators and Beams |
| spelling | doaj.art-f08bd06bcea04d0caa5aa436e1340d1b2022-12-22T00:03:46ZengAmerican Physical SocietyPhysical Review Special Topics. Accelerators and Beams1098-44022013-02-0116202070410.1103/PhysRevSTAB.16.020704Demonstration of a widely-tunable and fully-coherent high-gain harmonic-generation free-electron laserB. LiuW. B. LiJ. H. ChenZ. H. ChenH. X. DengJ. G. DingY. FanG. P. FangC. FengL. FengQ. GuM. GuC. GuoD. Z. HuangM. M. HuangW. H. HuangQ. K. JiaT. H. LanY. B. LengD. G. LiW. M. LiX. LiG. Q. LinL. ShangL. ShenC. X. TangG. L. WangL. WangR. WangX. T. WangZhan S. WangZhi S. WangH. F. YaoK. R. YeL. X. YinL. Y. YuJ. Q. ZhangMeng ZhangMiao ZhangT. ZhangW. Y. ZhangS. P. ZhongQ. G. ZhouD. WangZ. T. ZhaoFree-electron lasers (FELs) are fourth-generation light sources that deliver extremely high intensity, ultrashort light pulses over a broad wavelength range from far-infrared to hard x ray. FELs based on the self-amplified spontaneous emission principle have been successfully operated with ultrahigh brightness and a broad wavelengths tuning range with good transverse coherence but poor temporal coherence. In contrast, the laser-seeded FELs have provided full coherence but at selected central wavelengths, usually the harmonics of the laser seeds, with relatively narrower tuning range. We report the experimental demonstration of a high-gain harmonic-generation (HGHG) FEL that is continuously tunable over a wide range using the combination of optical parametrical amplification, variable-gap undulator, and harmonic selection, where the temporal coherence is preserved as confirmed with the Michelson interferometry. In order to achieve higher photon energies, the first try of cascaded HGHG with a fresh-bunch technique is also made at the Shanghai Deep Ultraviolet Free-electron Laser test facility.http://doi.org/10.1103/PhysRevSTAB.16.020704 |
| spellingShingle | B. Liu W. B. Li J. H. Chen Z. H. Chen H. X. Deng J. G. Ding Y. Fan G. P. Fang C. Feng L. Feng Q. Gu M. Gu C. Guo D. Z. Huang M. M. Huang W. H. Huang Q. K. Jia T. H. Lan Y. B. Leng D. G. Li W. M. Li X. Li G. Q. Lin L. Shang L. Shen C. X. Tang G. L. Wang L. Wang R. Wang X. T. Wang Zhan S. Wang Zhi S. Wang H. F. Yao K. R. Ye L. X. Yin L. Y. Yu J. Q. Zhang Meng Zhang Miao Zhang T. Zhang W. Y. Zhang S. P. Zhong Q. G. Zhou D. Wang Z. T. Zhao Demonstration of a widely-tunable and fully-coherent high-gain harmonic-generation free-electron laser Physical Review Special Topics. Accelerators and Beams |
| title | Demonstration of a widely-tunable and fully-coherent high-gain harmonic-generation free-electron laser |
| title_full | Demonstration of a widely-tunable and fully-coherent high-gain harmonic-generation free-electron laser |
| title_fullStr | Demonstration of a widely-tunable and fully-coherent high-gain harmonic-generation free-electron laser |
| title_full_unstemmed | Demonstration of a widely-tunable and fully-coherent high-gain harmonic-generation free-electron laser |
| title_short | Demonstration of a widely-tunable and fully-coherent high-gain harmonic-generation free-electron laser |
| title_sort | demonstration of a widely tunable and fully coherent high gain harmonic generation free electron laser |
| url | http://doi.org/10.1103/PhysRevSTAB.16.020704 |
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