Experimental observation of coherent cavity soliton frequency combs in silica microspheres.

@article{Webb2016ExperimentalOO,
  title={Experimental observation of coherent cavity soliton frequency combs in silica microspheres.},
  author={Karen E. Webb and Miro Erkintalo and St{\'e}phane Coen and Stuart G. Murdoch},
  journal={Optics letters},
  year={2016},
  volume={41 20},
  pages={
          4613-4616
        }
}
We report on the experimental observation of coherent cavity soliton frequency combs in silica microspheres. Specifically, we demonstrate that careful alignment of the microsphere relative to the coupling fiber taper allows for the suppression of higher-order spatial modes, reducing mode interactions and enabling soliton formation. Our measurements show that the temporal cavity solitons have sub-100-fs durations, exhibit considerable Raman self-frequency shift, and generally come in groups of… 

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