The Free Electron Laser (FEL) is shown to be a potentially attractive solution to the problem of finding a suitable short wavelength fusion driver. The design of a 3 MJ, 250 nm FEL fusion driver is discussed. An inertial confinement fusion driver must be an efficient, reliable, inexpensive source of high intensity radiation. The free electron laser has the potential for meeting these requirements, therefore we have investigated an approach for incorporating an FEL into a fusion reactor. The major components of an FEL system are a laser master oscillator, an electron accelerator, an FEL amplifier (wiggler magnet), and an electron beam dump for energy recovery. These are shown schematically in Fig. 1.
"The Free Electron Laser As A Fusion Driver", Proc. SPIE 0270, High Power Lasers and Applications, (15 September 1981); doi: 10.1117/12.931741; https://doi.org/10.1117/12.931741