Photonics Research, 2015, 3 (3): 03000072, Published Online: Jan. 23, 2019
Soliton mode-locked fiber laser based on topological insulator Bi2Te3 nanosheets at 2 μm
Pulse propagation and temporal solitons Ultrafast lasers Lasers and laser optics Mode-locked lasers Nonlinear optical materials
Abstract
We reported diverse soliton operations in a thulium/holmium-doped fiber laser by taking advantage of a tapered fiber-based topological insulator (TI) Bi 2 Te 3 saturable absorber (SA). The SA had a nonsaturable loss of ~ 53.5 % and a modulation depth of 9.8%. Stable fundamentally mode-locked solitons at 1909.5 nm with distinct Kelly sidebands on the output spectrum, a pulse repetition rate of 21.5 MHz, and a measured pulse width of 1.26 ps were observed in the work. By increasing the pump power, both bunched solitons with soliton number up to 15 and harmonically mode-locked solitons with harmonic order up to 10 were obtained. To our knowledge, this is the first report of both bunched solitons and harmonically mode-locked solitons in a fiber laser at 2 μm region incorporated with TIs.
Ke Yin, Bin Zhang, Lei Li, Tian Jiang, Xuanfeng Zhou, Jing Hou. Soliton mode-locked fiber laser based on topological insulator Bi2Te3 nanosheets at 2 μm[J]. Photonics Research, 2015, 3(3): 03000072.