A study of the relation between spontaneous radiation and stimulated emission in transitionradiation freeelectron lasers
Abstract
As a fundamental theorem in freeelectron lasers, the Madey theorem reveals the relationship between the spontaneous radiation and the stimulated radiation. In this paper, this problem is studied for transitionradiation freeelectron lasers. The results show that there is a formula corresponding to the first part of Madey's theorem; the former is more complicated while the second part remains the same. The results obtained are used to simplify the smallsignal gain calculation.
 Publication:

Acta Physica Sinica
 Pub Date:
 March 1990
 Bibcode:
 1990AcPSn..37.1505L
 Keywords:

 Free Electron Lasers;
 Spontaneous Emission;
 Stimulated Emission;
 Electromagnetic Interactions;
 Electromagnetic Radiation;
 Lasers and Masers