MXene and PtSe2 saturable absorbers for all-fibre ultrafast mid-infrared lasers

We report on the feasibility of MXene and platinum diselenide (PtSe2) as novel saturable absorbers for the development of wavelength stabilized passively mode-locked midinfrared fibre laser systems. After evaluating the performance of individual absorbers in a test cavity, we demonstrate a linear all-fibre laser cavity that utilizes a high reflective chirped fibre Bragg grating for wavelength selective feedback. The observed mode-locked pulse train from this Er3+:ZBLAN fibre laser has a 37 MHz repetition rate with an average power of 603 mW and a spectral width of 721 pm. Our results show that MXene and PtSe2 are promising nonlinear materials for all-integrated ultrafast fibre laser cavities for the important mid-infrared spectral region. (c) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

Automated summary

In this study, MXene and PtSe2 were investigated as novel saturable absorbers for wavelength stabilized mid-infrared fiber laser systems. The results demonstrated the potential of these materials for ultrafast fiber laser cavities in the mid-infrared spectral region.