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arXiv · 2404.11165

783-MHz fundamental repetition rate all-fiber ring laser mode-locked by carbon nanotubes

Maolin Dai·Bowen Liu·Yifan Ma·Takuma Shirahata·Ruoao Yang·Zhigang Zhang·Sze Yun Set·Shinji Yamashita
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Abstract

We demonstrate a 783-MHz fundamental repetition rate mode-locked Er-doped all-fiber ring laser with a pulse width of 623 fs. By using carbon nanotubes (CNT) saturable absorber (SA), a relatively low self-starting pump threshold of 108 mW is achieved. The laser has a very compact footprint less than 10 cm * 10 cm, benefiting from the all-active-fiber cavity design. The robust mode-locking is confirmed by the low relative intensity noise (RIN) and a long-term stability test. We propose a new scheme for generating high repetition rate femtosecond optical pulses from a compact and stable all-active-fiber ring oscillator.

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Maolin Dai, Bowen Liu, Yifan Ma, Takuma Shirahata, Ruoao Yang, Zhigang Zhang, Sze Yun Set, Shinji Yamashita. 2024-04-17. 783-MHz fundamental repetition rate all-fiber ring laser mode-locked by carbon nanotubes. https://doi.org/10.35848/1882-0786%2Fad548f

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