2025/03/18 by Tomilov, Sergei, Redkin, Mykyta, Wang, Yicheng +3
#FOS: Physical sciences #Optics (physics.optics)
paper · doi:10.48550/arxiv.2503.14033
We demonstrate peak power and pulse energy scaling of Kerr-lens modelocking (KLM) Ho:YAG thin-disk lasers (TDLs) emitting at 2.1-μm wavelength. We compare different laser configurations to reach a maximum pulse energy of 1.7 μJ at an output power of 29 W with a pulse duration of 434 fs, corresponding to a peak power of 3.7 MW. This represents a 5-fold increase in pulse energy and 4-fold increase in peak power compared to previous KLM Ho:YAG TDLs, thus reaching record high peak power for 2.1-μm mode-locked oscillators. We discuss current limitations at this wavelength and guidelines for future work towards higher power and pulse energies.