W Tian, X Tian, Q Li, G Wang, C Bai, Y Yu, X Xu, J Xu… - Optics Letters, 2023 - opg.optica.org
We report on the demonstration of a pure Kerr-lens mode-locked Yb: CALYO laser which
can directly deliver sub-200 fs pulses with more than 20-W average power. With an incident …