Peixiong Zhang, Wenjie Wu, Zhang-Lang Lin, Zhi-Qiang Li, Pavel Loiko, Simone Normani, Zhenqiang Chen, Zhen Li, Ghassen Zin Elabedine, Xavier Mateos, Huang-Jun Zeng, Ge Zhang, Hai-Yu Nie, Alain Braud, Patrice Camy, Valentin Petrov, Weidong Chen
We present the growth, spectroscopy, continuous-wave (CW) and passively mode-locked (ML) operation of a novel "mixed" tetragonal calcium rare-earth aluminate crystal, Yb3+ :Ca(Gd,Y)AlO4 . The absorption, stimulated-emission, and gain cross-sections are derived for π and σ polarizations. The laser performance of a c-cut Yb:Ca(Gd,Y)AlO4 crystal is studied using a spatially single-mode, 976-nm fiber-coupled laser diode as a pump source. A maximum output power of 347 mW is obtained in the CW regime with a slope efficiency of 48...
January 29, 2024: Optics Express