Microfiber-based gold nanorods as saturable absorber for femtosecond pulse generation in a fiber laser

作者：Wang, Xu De; Luo, Zhi Chao; Liu, Hao; Liu, Meng; Luo, Ai Ping^*; Xu, Wen Cheng

来源：Applied Physics Letters, 2014, 105(16): 161107.

DOI：10.1063/1.4899133

We reported on the femtosecond pulse generation from an erbium-doped fiber (EDF) laser by using microfiber-based gold nanorods (GNRs) as saturable absorber (SA). By virtue of the geometric characteristic of microfiber-based GNRs, the optical damage threshold of GNRs-SA could be greatly enhanced. The microfiber-based GNRs-SA shows a modulation depth of 4.9% and a nonsaturable loss of 21.1%. With the proposed GNRs-SA, the fiber laser emitted a mode-locked pulse train with duration of similar to 887 fs. The obtained results demonstrated that the GNRs deposited microfiber could indeed serve as a high-performance SA towards the practical applications in the field of ultrafast photonics.

• 出版日期2014-10-20
• 单位华南师范大学; 淮北师范大学