College of Optical Sciences, University of Arizona, Tucson, Arizona 85721, USA.
Opt Lett. 2013 Sep 1;38(17):3233-6. doi: 10.1364/OL.38.003233.
We report a diode-pumped 2.78 μm Er3+-doped ZBLAN fiber laser passively Q switched by a graphene saturable absorber, which was directly deposited onto a fiber dichroic mirror by the method of optically driven deposition. Stable Q-switched operation with a pulse duration of 2.9 μs and a pulse energy of 1.67 μJ was achieved in a 10 m long gain fiber. The pulse duration was reduced to 1 μs when the gain fiber length was shortened to 2 m. This Letter demonstrates that graphene is a promising and reliable saturable absorber for mid-infrared pulse generation at 3 μm.
我们报告了一种由石墨烯可饱和吸收体被动调 Q 的二极管泵浦 2.78 μm Er3+-掺杂 ZBLAN 光纤激光器，该石墨烯可饱和吸收体通过光驱动沉积的方法直接沉积在光纤二色镜上。在 10 m 长的增益光纤中实现了稳定的 Q 开关工作，脉冲持续时间为 2.9 μs，脉冲能量为 1.67 μJ。当增益光纤长度缩短到 2 m 时，脉冲持续时间降低到 1 μs。本研究表明，石墨烯是一种很有前途且可靠的用于在 3 μm 处产生中红外脉冲的可饱和吸收体。
