摘要
利用理论推导和数值模拟方法,给出了超短双曲正割脉冲较为严格的均方根脉冲宽度与通常使用的半高全宽脉冲宽度的解析表达式,并对两种脉冲宽度进行了比较.研究结果表明,对于亚周期(半高全宽脉冲宽度小于一个光学振荡周期)双曲正割脉冲,均方根脉冲宽度与半高全宽脉冲宽度有较大的差异,并且绝对相位对均方根脉冲宽度的影响很大.所以描述亚周期双曲正割脉冲时应该使用更加严格的均方根脉冲宽度.
The analytical expressions of two kinds of pulse width of ultrashort hyperbolic secant pulses were deduced,i, e. the pulse width at full width at half maximum （FWHM） which was used generally and the root mean-square （RMS） pulse width which was precise. The comparison of the two kinds of pulse width shows that the FWHM pulse width is different from the RMS pulse width for the subcycle （FWHM pulse width） hyperbolic secant pulses,and the absolute phase affects the pulse width seriously. The RMS pulse width should be used when the subcyle hyperbolic secant pulses is described.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2008年第9期1722-1725,共4页
Acta Photonica Sinica
基金
河北省自然科学基金(F2006000183
F2007000643)
河北科技大学科学研究基金(XL200741)资助
