Wang Ding, Qiao Lingling, Zhao Ruirui, Zhao Yu, Leng Yuxin
Opt Express. 2017 Feb 20;25(4):3083-3091. doi: 10.1364/OE.25.003083.
The propagation dynamics of radially polarized (RP) pulses in a gas-filled hollow-core fiber (HCF) is numerically studied. It is found that the stable transverse mode of RP pulse in HCF is not TM mode, nor any eigenmodes in terms of Bessel functions. Compared with linearly polarized (LP) pulses, the RP pulses with the same initial pulse duration and energy have higher transmission efficiency, more uniform spectral broadening, and cleaner temporal profile after highly nonlinear propagation in HCF and better focusing properties. These results suggest that energetic few-cycle RP pulses can be generated more efficiently by directly spectral broadening the RP pulses in HCF followed by temporal compression.
对径向偏振（RP）脉冲在充气空心光纤（HCF）中的传输动力学进行了数值研究。研究发现，HCF中RP脉冲的稳定横向模式不是TM模式，也不是贝塞尔函数形式的任何本征模式。与线偏振（LP）脉冲相比，具有相同初始脉冲持续时间和能量的RP脉冲在HCF中经过高度非线性传输后，具有更高的传输效率、更均匀的光谱展宽、更干净的时间轮廓以及更好的聚焦特性。这些结果表明，通过在HCF中直接对RP脉冲进行光谱展宽然后进行时间压缩，可以更有效地产生高能少周期RP脉冲。
