红外短脉冲自由电子激光锁模的解析研究
ANALYTICAL RESEARCH OF MODE LOCKING IN AN INFRARED SHORT-PULSE FREE-ELECTRON LASER
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摘要: 本文对一种自由电子激光中的锁模问题进行了解析研究,给出了自由电子激光中的锁模条件;得到了由于模的耦合,腔内激活的模数将减少mc倍,低增益将增加mc倍,指数增长速率将增加mc1/3倍。mc是电子微脉冲重复频率Δvr与腔内模的间隔Δvc的比值,mc=Δvr/Δvc。Abstract: This paper has made an analytical research of mode locking in a kind of free electron laser （FEL）, given the condition of mode locking in the FEL and obtained that due to mode coupling the number of active cavity modes will be reduced by a factor of mc, the low gain will be increased by a factor of mc, the rate of the exponential growth will be increased by a factor of mc1/3, mc is a ratio of the repetition frequency of the electron beam micropulses and the frequency interval of the cavity modes, mc=△vr/△vc.
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Key words:
- infrared /
- short-pulse /
- free electron laser /
- mode locking
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