【摘要】 从傍轴波动方程出发,给出了超短双曲正割脉冲光束的解析解.此解可以描述单周期以上的超短双曲正割脉冲光束.此脉冲光束解的每个频率分量都是高斯函数与双曲正割函数乘积的形式,具有相同的衍射距离参数.对这种超短脉冲光束在自由空间中的传输性质进行了研究.更多还原

【Abstract】 By starting from the paraxial wave equation,the analytical expression of the ultrashort Hyperbolic Secant pulsed beam are deduced.This solution can be used to describe the ultrashort Hyperbolic Secant pulsed beam whose pulse duration is longer than one optical oscillation period.These pulsed beams with a certain frequency have the product form of the monochromatic Gaussian beam times the complex Hyperbolic Secant function.The propagation properties of the ultrashort Hyperbolic Secant pulsed beam have been studied detailedly in free space.更多还原