A Two-Dimensional Numerical Program Simulating the Effects of Free-Electron Laser Nonrotational Symmetry,
NATIONAL AIR INTELLIGENCE CENTER WRIGHT-PATTERSON AFB OH
Pagination or Media Count:
A nonrotational symmetry 2D FEL numerical simulation program was set up with electron wiggling motion direction extended infinitely. This program was used to calculate light field evolution under conditions of nonideal incidence. Results showed that both shifting the center of the electron beam and tilting the beam axis caused the exponential degradation of luminous power output and excitation of higher order transverse modes, as well as deviation of the light beams barycenter. In addition to emittance, transverse phase space geometry of the electron beam is also an important parameter of FEL operation quality and has an influence on luminous power.
- Lasers and Masers