High-energy harmonic mode-locked 2 μm dissipative soliton fiber lasers

作者：Yang, Nan^*; Tang, Yulong; Xu, Jianqiu

来源：Laser Physics Letters, 2015, 12(8): 085102.

DOI：10.1088/1612-2011/12/8/085102

• fiber laser
• thulium-doped
• dissipative soliton
• high energy
• harmonic mode-locking
• soliton molecule

High-pulse-energy harmonic mode-locking in 2 mu m Tm-doped fiber lasers (TDFLs) is realized, for the first time, by using a short piece of anomalous dispersion gain fiber and the dissipative soliton mode-locking mechanism. Appropriately designing the cavity dispersion map and adjusting the cavity gain, stable harmonic mode-locking of the dissipative soliton TDFL from the 2nd to the 4th order is achieved, with the pulsing repetition rates and pulse energy being 43.4, 65.1, 86.8 MHz, and 6.27, 4.32 and 3.29 nJ, respectively. The harmonic laser pulse has a pulse width of similar to 30 ps and a center wavelength of similar to 1929 nm with a spectral bandwidth of similar to 3.26 nm, giving a highly chirped laser pulse. Two types of soliton molecules are also observed in this laser system.

• 出版日期2015-8
• 单位上海交通大学