复宗量双曲余弦-高斯光束的束传输因子与传输性质

摘要

引入了一类新的复参数双曲余弦-高斯光束,给出了这类光束的束传输因子(M2-因子)的解析表达式,并就这类光束在一阶傍轴光学系统中的传输特性进行了讨论.与实参数双曲余弦-高斯光束相比,这类复参数双曲余弦-高斯光束呈现出了新特性.%An alternative set of cosh-Gaussian (ChG) beams whose parameter in cos h part is complex, termed as complex-argument ChG beams, is introduced. Its beam propagation factor (M2-factor) has been derived and analysed physically. Then , the propagation of complex-argument ChG beams passing through a paraxial optic al ABCD system has been studied detail. Contrast to the usual ChG beams, the com plex-argument ChG beams possess some interesting features.