Abstract
We present a conceptual design of a near infrared free electron laser master oscillator/power amplifier (FEL-MOPA) driven by a common radiofrequency accelerator. We present techniques for radiofrequency switching that permit exploration of the FEL-MOPA operation on single electron macropulses, in both the small signal and large signal regimes. Feasibility of this concept is shown by using, as an example, the parameters of the Stanford Mark-III oscillator [1] and the Rockwell tapered undulator [2], the latter in the amplifier configuration. Important physics issues of the FEL-MOPA addressed by this suggested experiment are (1) (synchronization and optimization of electron and laser pulses, and (2) gain-guided temporal and spatial evolution of the laser mode in the amplifier.
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