A wide bandwidth free-electron laser with mode locking using current modulation.

[摘要] A new scheme for mode locking a free-electron laser amplifier is proposed based on electron beam current modulation. It is found that certain properties of the original concept, based on the energy modulation of electrons, are improved including the spectral brightness of the source and the purity of the series of short pulses. Numerical comparisons are made between the new and old schemes and between a mode-locked free-electron laser and self-amplified spontaneous emission free-electron laser. Illustrative examples using a hypothetical mode-locked free-electron laser amplifier are provided. The ability to generate intense coherent radiation with a large bandwidth is demonstrated.

[发布日期] 2011-01-20

[学科分类] 物理（综合）

[关键词] AMPLIFIERS;BRIGHTNESS;COHERENT RADIATION;ELECTRON BEAMS;ELECTRONS;FREE ELECTRON LASERS;MODE LOCKING;MODULATION