超短余弦-高斯脉冲的能量分析

Pulse Energy of the Ultrashort Cosine-Gauss Pulse

研究了超短余弦-高斯脉冲的能量与绝对相位以及余弦函数的参数之间的关系,给出了余弦-高斯脉冲能量的解析表达式.研究结果表明,当脉冲宽度较小时,绝对相位对脉冲能量有很大影响;余弦函数的参数Ω在一定取值范围内对脉冲能量也有很大影响,它会导致脉冲宽度大于一个光学振荡周期的几周期余弦-高斯脉冲能量有较大的变化.

The relations between the pulse energy of ultrashort cosine-Gauss pulse and the absolute phase, the parameter of the cosine function are studied. The expression of pulse energy of ultrashort cosine-Gauss pulse is given. The results show that the absolute phase affects the pulse energy seriously when the pulse width is short ; the pulse energy even for the pulse width longer than one optical oscillation period varies in a large range when the value of the parameter of cosine function takes in a certain range.