Design requirements and calculated performance of an XUV FEL oscillator operating on a higher harmonic
Abstract
We study, using numerical simulation methods, the design requirements for the electron beam, wiggler, and optical resonator of an extremeultraviolet (XUV, lambda is equal or between 10 and 100 nm) freeelectron laser oscillator operating on a higher harmonic. Our previous theoretical studies of an XUV FEL oscillator have assumed operation at the fundamental wavelength. Higher harmonic operation is attractive because the energy of the electrons can be reduced, thus reducing the cost of the linac. A further reduction in beam energy is possible with the use of shortperiod wigglers: in the present work, we use the expected properties of pulsedwire wigglers. Operation of an FEL oscillator on the third harmonic has been experimentally demonstrated at Stanford University and Los Alamos, and this mode of operation may also be both possible and desirable for an XUV device.
 Publication:

Presented at the 12th International Free Electron Laser Conference
 Pub Date:
 November 1990
 Bibcode:
 1990ifel.confR..17G
 Keywords:

 Electron Beams;
 Electrons;
 Extreme Ultraviolet Radiation;
 Free Electron Lasers;
 Linear Accelerators;
 Computerized Simulation;
 Cost Reduction;
 Harmonics;
 Optical Resonators;
 Oscillators;
 Three Dimensional Models;
 Wiggler Magnets;
 Lasers and Masers