Terawatt-Isolated Attosecond X-ray Pulse Using a Tapered X-ray Free Electron Laser
High power attosecond (as) X-ray pulses are in great demand for ultrafast dynamics and high resolution microscopy. We numerically demonstrate the generation of a ~230 attosecond, 1.5 terawatt (TW) pulse at a photon energy of 1 keV, and a 115 attosecond, 1.2 TW pulse at a photon energy of 12.4 keV, u...
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MDPI AG
2017-06-01
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| Series: | Applied Sciences |
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| Online Access: | http://www.mdpi.com/2076-3417/7/6/614 |
| _version_ | 1811268321661681664 |
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| author | Sandeep Kumar Alexandra S. Landsman Dong Eon Kim |
| author_facet | Sandeep Kumar Alexandra S. Landsman Dong Eon Kim |
| author_sort | Sandeep Kumar |
| collection | DOAJ |
| description | High power attosecond (as) X-ray pulses are in great demand for ultrafast dynamics and high resolution microscopy. We numerically demonstrate the generation of a ~230 attosecond, 1.5 terawatt (TW) pulse at a photon energy of 1 keV, and a 115 attosecond, 1.2 TW pulse at a photon energy of 12.4 keV, using the realistic electron beam parameters such as those of Korean X-ray free electron laser (XFEL) in a tapered undulator configuration. To compensate the energy loss of the electron beam and maximize its radiation power, a tapering is introduced in the downstream section of the undulator. It is found that the tapering helps in not only amplifying a target radiation pulse but also suppressing the growth of satellite radiation pulses. Tapering allows one to achieve a terawatt-attosecond pulse only with a 60 m long undulator. Such an attosecond X-ray pulse is inherently synchronized to a driving optical laser pulse; hence, it is well suited for the pump-probe experiments for studying the electron dynamics in atoms, molecules, and solids on the attosecond time-scale. For the realization of these experiments, a high level of synchronization up to attosecond precision between optical laser and X-ray pulse is demanded, which can be possible by using an interferometric feedback loop. |
| first_indexed | 2024-04-12T21:20:45Z |
| format | Article |
| id | doaj.art-c90331997d404912ae6f5178bf7fbd99 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-04-12T21:20:45Z |
| publishDate | 2017-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-c90331997d404912ae6f5178bf7fbd992022-12-22T03:16:19ZengMDPI AGApplied Sciences2076-34172017-06-017661410.3390/app7060614app7060614Terawatt-Isolated Attosecond X-ray Pulse Using a Tapered X-ray Free Electron LaserSandeep Kumar0Alexandra S. Landsman1Dong Eon Kim2Department of Physics, Center for Attosecond Science and Technology, Pohang University of Science and Technology, Pohang 790-784, KoreaMax Planck Center for Attosecond Science, Pohang 790-784, KoreaDepartment of Physics, Center for Attosecond Science and Technology, Pohang University of Science and Technology, Pohang 790-784, KoreaHigh power attosecond (as) X-ray pulses are in great demand for ultrafast dynamics and high resolution microscopy. We numerically demonstrate the generation of a ~230 attosecond, 1.5 terawatt (TW) pulse at a photon energy of 1 keV, and a 115 attosecond, 1.2 TW pulse at a photon energy of 12.4 keV, using the realistic electron beam parameters such as those of Korean X-ray free electron laser (XFEL) in a tapered undulator configuration. To compensate the energy loss of the electron beam and maximize its radiation power, a tapering is introduced in the downstream section of the undulator. It is found that the tapering helps in not only amplifying a target radiation pulse but also suppressing the growth of satellite radiation pulses. Tapering allows one to achieve a terawatt-attosecond pulse only with a 60 m long undulator. Such an attosecond X-ray pulse is inherently synchronized to a driving optical laser pulse; hence, it is well suited for the pump-probe experiments for studying the electron dynamics in atoms, molecules, and solids on the attosecond time-scale. For the realization of these experiments, a high level of synchronization up to attosecond precision between optical laser and X-ray pulse is demanded, which can be possible by using an interferometric feedback loop.http://www.mdpi.com/2076-3417/7/6/614UVEUVand X-ray lasersattosecond pulsesfree-electron laserundulator radiation |
| spellingShingle | Sandeep Kumar Alexandra S. Landsman Dong Eon Kim Terawatt-Isolated Attosecond X-ray Pulse Using a Tapered X-ray Free Electron Laser Applied Sciences UV EUV and X-ray lasers attosecond pulses free-electron laser undulator radiation |
| title | Terawatt-Isolated Attosecond X-ray Pulse Using a Tapered X-ray Free Electron Laser |
| title_full | Terawatt-Isolated Attosecond X-ray Pulse Using a Tapered X-ray Free Electron Laser |
| title_fullStr | Terawatt-Isolated Attosecond X-ray Pulse Using a Tapered X-ray Free Electron Laser |
| title_full_unstemmed | Terawatt-Isolated Attosecond X-ray Pulse Using a Tapered X-ray Free Electron Laser |
| title_short | Terawatt-Isolated Attosecond X-ray Pulse Using a Tapered X-ray Free Electron Laser |
| title_sort | terawatt isolated attosecond x ray pulse using a tapered x ray free electron laser |
| topic | UV EUV and X-ray lasers attosecond pulses free-electron laser undulator radiation |
| url | http://www.mdpi.com/2076-3417/7/6/614 |
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