Tailored terahertz pulses from a laser-modulated electron beam
We present a new method to generate steady and tunable, coherent, broadband terahertz radiation from a relativistic electron beam modulated by a femtosecond laser. We have demonstrated this in the electron storage ring at the Advanced Light Source. Interaction of an electron beam with a femtosecond...
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| Veröffentlicht in: | Physical review letters 2006-04, Vol.96 (16), p.164801-164801, Article 164801 |
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| container_end_page | 164801 |
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| container_issue | 16 |
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| container_title | Physical review letters |
| container_volume | 96 |
| creator | Byrd, J M Hao, Z Martin, M C Robin, D S Sannibale, F Schoenlein, R W Zholents, A A Zolotorev, M S |
| description | We present a new method to generate steady and tunable, coherent, broadband terahertz radiation from a relativistic electron beam modulated by a femtosecond laser. We have demonstrated this in the electron storage ring at the Advanced Light Source. Interaction of an electron beam with a femtosecond laser pulse copropagating through a wiggler modulates the electron energies within a short slice of the electron bunch with about the same duration of the laser pulse. The bunch develops a longitudinal density perturbation due to the dispersion of electron trajectories, and the resulting hole emits short pulses of temporally and spatially coherent terahertz pulses synchronized to the laser. We present measurements of the intensity and spectra of these pulses. This technique allows tremendous flexibility in shaping the terahertz pulse by appropriate modulation of the laser pulse. |
| doi_str_mv | 10.1103/PhysRevLett.96.164801 |
| format | Article |
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We have demonstrated this in the electron storage ring at the Advanced Light Source. Interaction of an electron beam with a femtosecond laser pulse copropagating through a wiggler modulates the electron energies within a short slice of the electron bunch with about the same duration of the laser pulse. The bunch develops a longitudinal density perturbation due to the dispersion of electron trajectories, and the resulting hole emits short pulses of temporally and spatially coherent terahertz pulses synchronized to the laser. We present measurements of the intensity and spectra of these pulses. This technique allows tremendous flexibility in shaping the terahertz pulse by appropriate modulation of the laser pulse.</abstract><cop>United States</cop><pmid>16712239</pmid><doi>10.1103/PhysRevLett.96.164801</doi><tpages>1</tpages><oa>free_for_read</oa></addata></record> |
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| identifier | ISSN: 0031-9007 |
| ispartof | Physical review letters, 2006-04, Vol.96 (16), p.164801-164801, Article 164801 |
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| language | eng |
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| source | American Physical Society Journals |
| subjects | ADVANCED LIGHT SOURCE BEAM BUNCHING CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ELECTRON BEAMS ELECTRON DENSITY HOLES LASERS MODULATION PARTICLE ACCELERATORS PULSES RELATIVISTIC RANGE TRAJECTORIES |
| title | Tailored terahertz pulses from a laser-modulated electron beam |
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