Tunable radiation source through upshifting without ionization

G. Shvets, N. J. Fisch, J. M. Rax

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)2598-2601
Number of pages4
JournalPhysical review letters
Issue number12
StatePublished - 1998

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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