【摘要】 在时间域中研究了载波相位对超短正弦高斯脉冲的影响.给出了超短正弦高斯脉冲的脉冲能量和时间重心的解析表达式和数值模拟结果.结果表明载波相位和正弦函数的参数对超短正弦高斯脉冲的脉冲能量和时间重心有很大的影响.当载波相位等于nπ和{2n+1} π/2时,超短正弦高斯脉冲的脉冲能量分别达到最小和最大值;当载波相位等于{2n+1} π/4时,载波相位对超短正弦高斯脉冲的脉冲能量没有影响.当载波相位等于{4n+3} π/4和{4n+1}π/4时,超短正弦高斯脉冲的时间重心分别达到最小和最大值;当载波相位等于nπ/2时,超短正弦高斯脉冲的时间重心不发生变化.更多还原

【Abstract】 The influences of the carrier phase on the ultrashort sine-Gaussian pulse were studied in time domain.Expressions of the pulse energy and the center of time gravity were deduced,and some numerical results were given.It is found that the carrier phase and the parameter of sine function affect the pulse energy and the center of time gravity seriously when the pulse width is shorter than one optical oscillation period.The pulse energy of sine-Gaussian pulse reaches respectively the minimum and maximum when the carrier phase is equal to nπ and 2n+1π/2;the pulse energy keeps invariable when the carrier phase takes 2n+1π/4.The center of time gravity of sine-Gaussian pulse reaches respectively the minimum and maximum when the carrier phase is equal to 4n+3π/4 and 4n+1π/4;the center of time gravity keeps invariable when the carrier pahse takes nπ/2.更多还原