Vector dynamics of pulsating solitons in an ultrafast fiber laser
Wenxiong Du, Heping Li, Junwen Li, Zhuang Wang, Zhiyao Zhang, Shangjian Zhang, Yong Liu
Abstract
We experimentally investigate the vector nature of various pulsating solitons in an ultrafast fiber laser with single-wall carbon nanotubes. By virtue of the dispersive Fourier transform technique, the polarization-resolved spectral evolution of pulsating vector solitons is measured in real time. In the case of single-periodic pulsation, pulsating behaviors of the two orthogonal polarization components can be either synchronous or asynchronous. We also observe double-periodic pulsation in the cavity for the first time, to the best of our knowledge. It is shown that the shot-to-shot spectra oscillate with two combined modulation periods involved in this process. Our results would be beneficial for further understanding of the vector dynamics of pulsating solitons in dissipative systems.