L. Schachter, HIGH-EFFICIENCY BEAM-WAVE INTERACTION IN QUASI-PERIODIC STRUCTURES, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 52(2), 1995, pp. 2037-2044
A semianalytical method for the design and analysis of high-efficienty
(> 50%) generation of radiation in traveling output structures is pre
sented. No a priori assumption about the functional form of the electr
omagnetic field is required. The concept of scalar interaction impedan
ce used in periodic structures is generalized to a matrix in the case
of a nonperiodic system. Its eigenvalue is shown to be directly relate
d to the beam-wave interaction efficiency. The method is demonstrated
with the design and analysis of a 70% efficiency system.