Wang Runwen, Heinrich Hora. Generation conditions for lateral free electron laser amplifiers[J]. Chinese Journal of Lasers, 1984, 11(12): 705
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Conditions for direct amplification of laser light by high energy e-beams are analysed theoretically in depth. The major results are:(1)the movement of high energy electrons in a powerful laser field is a conservative field movement, thus the condition for in-phase coupling is obtained;(2)proper coupling angles is necessary to insure the electro-magnetic wave to obtain energy from e-beams. It is pointed out that this new FEL is feasible.