Abstract
We report a self-starting mode-locked all-polarization-maintaining (PM) holmium (Ho)-doped fiber oscillator operating at ∼2.08 µm based on nonlinear polarization evolution (NPE). The oscillator is configured as a linear cavity structure with two output ports exhibiting completely different pulse characteristics. One output port of the oscillator can deliver a stable, clean soliton-like pulse with a pulse duration of 439 fs and an average power of 7.5 mW at a fundamental repetition rate of 61.67 MHz. In contrast, the other port delivers a low-quality pulse with a complex structure. Numerical simulations reveal that the pulse difference between the two ports is mainly caused by the nonlinear optical interactions between the slow-axis and fast-axis modes in the PM fibers. Furthermore, the obtained clean pulses show significant improvements in relative intensity noise and power stability compared to complex pulses. Our study can help researchers obtain high-quality, stable pulses from PM-NPE mode-locked fiber oscillators.
© 2023 Optica Publishing Group
Full Article | PDF ArticleMore Like This
Kuilei Yang, Lei Feng, Kun Wei, Cuiling Liu, Huiye Zhu, Chunyu Guo, Peiguang Yan, Shuangchen Ruan, and Jinzhang Wang
Opt. Lett. 47(19) 4893-4896 (2022)
Jan Szczepanek, Tomasz M. Kardaś, Czesław Radzewicz, and Yuriy Stepanenko
Opt. Lett. 42(3) 575-578 (2017)
Yu Jiang, Shukai Zheng, Geguo Du, Linpeng Yu, Jiachen Wang, Hongyi Chen, Fanlong Dong, Xing Luo, Jinzhang Wang, Peiguang Yan, Qitao Lue, Chunyu Guo, and Shuangchen Ruan
Opt. Express 31(9) 15170-15178 (2023)