Kerr-lens mode-locked ytterbium-activated orthoaluminate laser

Zhang-Lang Lin (1) , Wen-Ze Xue (1) , Huang-Jun Zeng (1) , Ge Zhang (1) , Peixiong Zhang (2) , Zhenqiang Chen (2) , Zhen Li (2) , Valentin Petrov (3) , Pavel Loiko (4, 5) , Xavier Mateos (6) , Haifeng Lin (7) , Li Wang (3) , Weidong Chen (3, 1)

1 Fuzhou University [Fuzhou]
2 Jinan University [Guangzhou]
3 MBI - Max-Born Institute for Nonlinear Optics and Short Pulse Spectroscopy
4 OML - Optique, Matériaux et Laser
5 CIMAP - UMR 6252 - Centre de recherche sur les Ions, les MAtériaux et la Photonique
6 Universitat Rovira i Virgili
7 Shenzhen Univerisity [Shenzhen]

We report on the first, to the best of our knowledge, Kerr-lens mode-locked laser based on an Yb 3+ -doped perovskite-type orthoaluminate crystal exploiting two different principal light polarizations. The Yb:(Y,Gd)AlO 3 laser delivers soliton pulses as short as 32 fs at 1067 nm with an average output power of 328 mW and a pulse repetition rate of ∼84.6 MHz for E || a polarization. For the orthogonal E || b polarization, 33-fs pulses are generated at 1057 nm with an average output power of 305 mW. Power scaling to a maximum average output power reaching 2.07 W is achieved at the expense of longer pulse duration (72 fs for E || b ), corresponding to an optical efficiency of 43.9% and a peak power of 303 kW.

Domaines: Optique [physics.optics]

Zhang-Lang Lin, Wen-Ze Xue, Huang-Jun Zeng, Ge Zhang, Peixiong Zhang, et al.. Kerr-lens mode-locked ytterbium-activated orthoaluminate laser. Optics Letters, 2022, 47 (12), pp.3027-3030. ⟨10.1364/OL.460701⟩. ⟨hal-03858737⟩