Zeng Huang-Jun, Lin Zhang-Lang, Loiko Pavel, Yuan Feifei, Zhang Ge, Lin Zhoubin, Mateos Xavier, Petrov Valentin, Chen Weidong
Opt Express. 2025 Apr 7;33(7):15057-15066. doi: 10.1364/OE.559152.
We report on the polarized spectroscopy, continuous-wave laser operation, and mode-locked laser performance of an ytterbium-doped disordered tetragonal rare-earth strontium aluminate crystal, Yb:GdSrAlO. In the continuous-wave regime, the diode-pumped Yb:GdSrAlO laser generated a maximum output power of 487 mW at 1064 nm (π-polarization), with a slope efficiency of 61%. By employing a commercial SESAM to initiate and stabilize soliton-like pulse formation, the mode-locked Yb:GdSrAlO laser generated transform-limited pulses as short as 38 fs at 1065.7 nm, with an average output power of 87 mW at a repetition rate of ∼66.5 MHz. The average output power was further scaled to 131 mW for slightly longer pulse duration of 43 fs, corresponding to a peak power of 40.3 kW and a laser efficiency of 15.5%. To the best of our knowledge, this is the first demonstration of mode-locked laser operation of the Yb:GdSrAlO crystal.
我们报道了掺镱无序四方稀土铝酸锶晶体Yb:GdSrAlO的偏振光谱、连续波激光运行及锁模激光性能。在连续波状态下，二极管泵浦的Yb:GdSrAlO激光器在1064nm（π偏振）处产生了487mW的最大输出功率，斜率效率为61%。通过使用商用SESAM来启动和稳定类孤子脉冲形成，锁模Yb:GdSrAlO激光器在1065.7nm处产生了短至38fs的变换极限脉冲，重复频率约为66.5MHz时平均输出功率为87mW。对于稍长的43fs脉冲持续时间，平均输出功率进一步提升至131mW，对应峰值功率为40.3kW，激光效率为15.5%。据我们所知，这是Yb:GdSrAlO晶体锁模激光运行的首次演示。
