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

Qian Zhang, Yubin Hou, Weihua Song, Xi Wang, Carl Blair, Xu Chen, Ju Li, Chunnong Zhao, Pu Wang

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

We investigated the frequency noise coupling mechanism of a 2 μm polarizationmaintaining 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 Hz/ √Hz at frequencies higher than 100 Hz.

Original languageEnglish
Pages (from-to)3221-3229
Number of pages9
JournalOptics Express
Volume29
Issue number3
DOIs
Publication statusPublished - 1 Feb 2021

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