Sub-200  fs, 344  MHz mode-locked Tm-doped fiber laser

Weiyu Lai, Hui Zhang, Zexiu Zhu, Peiguang Yan, Shuangchen Ruan, Zhipei Sun, Jinzhang Wang

Research output: Contribution to journalArticleScientificpeer-review


We demonstrate a compact, self-starting mode-locked thulium-doped fiber laser based on nonlinear polarization evolution (NPE), with a fundamental repetition rate of ∼344MHz and a pulse duration of ∼160fs. The generated pulses centered at ∼1975nm have a maximum output power of ∼560mW, corresponding to a pulse energy of ∼1.63nJ. To the best of our knowledge, the achieved repetition rate represents the highest value of fundamentally NPE mode-locked fiber lasers at ∼2µm, while the average output power is also higher than the previously reported 2 µm ultrafast single-mode fiber oscillators. The timing jitter in the integrated range [5 kHz, 10 MHz] and the integrated relative intensity noise in the range [10 Hz, 10 MHz] reach ∼35fs and ∼0.009%, respectively. Our high-performance laser is an ideal candidate for various applications, including mid-infrared frequency metrology and high-speed optical sampling.

Original languageEnglish
Pages (from-to)5492-5495
Number of pages4
JournalOptics Letters
Issue number19
Publication statusPublished - 1 Oct 2020
MoE publication typeA1 Journal article-refereed

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