远红外自由电子激光器的性能和可能的应用(英文)

本文提出了远红外自由电子激光器(FIRFEL)的现实优点:对电子束质量要求不太苛刻;比较经济;对远红外区的非线性和相干性研究是唯一的合适的光源。分析了自由电子激光器增益与电子束和摆动器参量的关系,指出对给定的发射度存在一特定的波长,当波长比特定波长短时,增益将急骤下降。概述了远红外区的重要物理现象以及远红外自由电子激光器的可能的应用,预期这些研究对THz电子学发展是很重要的。

PERFORMANCES AND POSSIBLE USES OF FAR INFRARED FREE ELECTRON LASERS

In this paper the advantages of the realisation of a far infrared (FIR) free electron laser (FEL) are shown: it requires an electron beam with less stringent characteriaties, less expensive and it is unique source for nonlinearity and coherence in FIR. The dependence of the FEL performance en parameters of the electron beam and undulator is described. For a given beam emittance there is a specific wavelength below which the gain rapidly becomes very low. The important physical phenomena in the FIB and possible uses of FIRFEL are given in broad outline, these studies could be important for the possible development of a THz electronics.