介质镜的反射特性对飞秒高斯脉冲的影响

Influences of reflection characteristics of multiplayer dielectric mirrors on femtosecond Gaussian pulse

研究了介质镜反射系数的振幅与位相二阶导数对飞秒高斯脉冲的影响。结果表明 ,振幅特性也可以用来对脉冲进行压缩 ,即在中心频率处反射率下凹的镜子可以使啁啾参量较小的脉冲变窄 。

Studies have been made on the influences of the second order derivatives of the amplitude and phase of the reflection coefficient on the Gaussian pulse upon reflection from the dielectric mirrors. Results show that the amplitude characteristics of the reflection may also be used to compress the pulse. Specifically, mirrors with a minimum reflectivity at the central frequency can be used to reduce the widths of less chirped pulses and those with a maximum reflectivity can compress pulses of larger chirping factors.