Kerr-lens mode-locking of an Yb:CLNGG laser

Identifier:  imarina:9293313

Handle: https://hdl.handle.net/20.500.11797/imarina9293313

Authors:  Lin, ZL; Loiko, P; Zeng, HJ; Xue, WZ; Zhang, G; Normani, S; Camy, P; Petrov, V; Mateos, X; Lin, HF; Yu, HH; Zhang, HJ; Liu, JH; Wang, L; Chen, WD

Abstract:
We report on a Kerr-lens mode-locked laser based on an Yb3+-doped disordered calcium lithium niobium gallium garnet (Yb:CLNGG) crystal. Pumping by a spatially single-mode Yb fiber laser at 976 nm, the Yb:CLNGG laser delivers soliton pulses as short as 31 fs at 1056.8 nm with an average output power of 66 mW and a pulse repetition rate of ∼77.6 MHz via soft-aperture Kerr-lens mode-locking. The maximum output power of the Kerr-lens mode-locked laser amounted to 203 mW for slightly longer pulses of 37 fs at an absorbed pump power of 0.74 W, which corresponds to a peak power of 62.2 kW and an optical efficiency of 20.3%.