and a theoretical model is established to expound the variation of pulse duration and the modulation on the pulse envelope similar to the diffraction characteristics in spatial domain.
通过与光束的空间传输特性类比解析了光栏宽度变化引起的脉宽变化以及脉沖轮廓出现时间衍射调制现象;
with the development of few-cycle pulses (fcp), the phase shift of the optical carrier with respect to the pulse envelope becomes non-negligible.