Harith Ahmad, Khalil Kamaruzzaman, Muhamad Zharif Samion, Norazriena Yusoff, Bülend Ortaç, Zamri Radzi
MXenes have been demonstrated as saturable absorbers for mode-locking in fiber laser systems operating from 1 to 2 μm wavelength. Despite that, there has been no utilization of MXene as a mode-locker at the extended 2 μm wavelength. In this work, we present the potential of MXene material (Cr2C) for mode-locking in a Holmium-doped fiber laser (HDFL). The Cr2C-SA had a saturation intensity of 1.7 MW/cm2 and a modulation depth of 14.2 %, respectively. Stable fundamental mode-locked pulses were realized at the pump power of 1.6 W. The mode-locked pulses had a repetition rate of 13.74 MHz, centered at 2077.54 nm, with a pulse duration of 1.75 ps. This study presented the first HDFL system to use MXene as a saturable absorber and the first utilization of Cr2C as a mode-locker. © 2025
Photonics Research Centre, Universiti Malaya, Kuala Lumpur, 50603, Malaysia; Department of Physics, Faculty of Science, Universiti Malaya, Kuala Lumpur, 50603, Malaysia; Department of Physics, Universitas Negeri Malang, Malang, 65145, Indonesia; National Nanotechnology Research Center (UNAM) and Institute of Materials Science Nanotechnology, Bilkent University, Ankara, 06800, Turkey; Department of Paediatric Dentistry & Orthodontics, Faculty of Dentistry, Universiti Malaya, Kuala Lumpur, 50603, Malaysia
