Robust mode-locking all-fiber ultrafast laser in nanocavity of 2D heterostructure, for communications, micromachining, sensing, bio-photonics

https://www.eurekalert.org/news-releases/1097405

"integrating nanocavity MoS2-BN-graphene-BN-MoS2 heterostructure onto fiber end facet exhibits significantly enhanced saturable absorption properties, reducing pulse splitting possibility under different polarization states in fiber ring cavity, achieving single-pulse generation in 85% of configurations compared to 20% for bare graphene-saturable absorber... compact, robust, eliminates need for polarization controller...  65% reduced saturation intensity which is beneficial for self-starting "