Coherent short wave radiation from a solid state free electron laser

S. A. Bogacz, J. B. Ketterson, G. K. Wong

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


The idea of using a crystal lattice or a superlattice as an undulator for a free electron laser is explored. A purely classical treatment of relativistic positrons channeling through the proposed structure is performed in a self-consistent fashion involving the wave equation for the radiating electromagnetic field and the kinetic equation for the positron distribution function. The gain coefficient for a forward radiating field is obtained in closed analytical form and is studied numerically for a (110) planar channeling in Si. This result, combined with a feedback mechanism arising from Bragg diffraction within the basic crystal lattice, may lead to an instability of the radiation inside the crystal.

Original languageEnglish (US)
Pages (from-to)328-336
Number of pages9
JournalNuclear Inst. and Methods in Physics Research, A
Issue number1-2
StatePublished - Sep 1 1986

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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