Pump RIN coupling to frequency noise of a polarization-maintaining 2 µm single frequency fiber laser | Zendy

Qian Zhang | Zendy; Yubin Hou | Zendy; Weihua Song | Zendy; Xi Wang | Zendy; C. D. Blair | Zendy; Xu Chen | Zendy; L. Ju | Zendy; C. Zhao | Zendy; Pu Wang | Zendy

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Pump RIN coupling to frequency noise of a polarization-maintaining 2 µm single frequency fiber laser

Author(s) -

Qian Zhang,

Yubin Hou,

Weihua Song,

Xi Wang,

C. D. Blair,

Xu Chen,

L. Ju,

C. Zhao,

Pu Wang

Publication year - 2021

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.415298

Subject(s) - relative intensity noise , laser , noise (video) , coupling (piping) , optics , polarization (electrochemistry) , physics , materials science , semiconductor laser theory , chemistry , computer science , artificial intelligence , metallurgy , image (mathematics)

We investigated the frequency noise coupling mechanism of a 2 μm polarization-maintaining single frequency fiber laser (SFFL) theoretically and experimentally. The coupling of pump's relative intensity noise (RIN) to frequency noise of a single-frequency high-gain silica fiber laser is shown experimentally to be consistent with a theoretical model where thermal expansion and thermo-optic effect mediate the coupling. The measured and theoretical frequency noise of the 2 μm SFFL with three pump sources is compared. We find using a 1550 nm single frequency laser pump source produces the lowest frequency noise, less than 100 H z / H z at frequencies higher than 100 Hz.

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