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利用数值模拟方法研究了超短脉冲Bessel光束传输过程中的空间诱导群速度色散 .数值模拟的结果证实了对于实验中有限宽度的Bessel光束 ,只要其衍射距离大于空间诱导群速度色散的距离 ,空间诱导群速度色散的理论就可以很好地描述脉冲的演化过程 .
The space-induced group velocity dispersion in the ultra-short pulse Bessel beam is studied by using numerical simulation. The numerical simulation results show that for a Bessel beam with a finite width in the experiment, as long as the diffraction distance is larger than the space-induced group velocity dispersion, The theory of induced group velocity dispersion can well describe the evolution of the pulse.