Tunable Radiation Source through Upshifting without Ionization
- 23 March 1998
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 80 (12), 2598-2601
- https://doi.org/10.1103/physrevlett.80.2598
Abstract
A mechanism for generating electromagnetic wakes of infrared radiation by a short laser pulse, propagating through an underdense plasma in the presence of a magnetostatic undulator, is described. As opposed to the undulator radiation, produced when a charged particle bunch propagates in a periodic magnetic field, here a laser pulse is used instead of the particle bunch. This mechanism for a tunable, plasma-based radiation source does not rely on ionization or photoswitching. It is also found that, in the presence of a static periodic magnetic field, long laser pulses become modulationally unstable, generating an electromagnetic wake.Keywords
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