[1] [1] S. L. Allen. Nonlinear absorption of high power free-electron-laser-generated microwaves at electron cyclotron resonance frequencies in the MTX tokamak. Phys. Rev. Lett., 1994, 72(9): 1348～1351

[3] [3] T. J. Orzechowski, B. R. Anderson, J. C. Clark et al.. High-efficiency extraction of microwave radiation from a tapered-wiggler free-electron laser. Phys. Rev. Lett., 1986, 57(17): 2172～2175

[4] [4] P. G. O′Shea, S. C. Bender. Performance of the APEX free-electron laser at Los Alamos national laboratory. Nucl. Instr. and Meth. (A), 1993, 331(1): 62～68

[6] [6] T. H. Chung, H. S. Kim, J. K. Lee. Simulation of tapered FEL amplifiers in millimeter and infrared regions. Nucl. Instr. and Meth. (A), 1993, 331(3): 482～486