Pump RIN coupling to frequency noise of a polarization-maintaining 2 µm single frequency fiber laser.
Opt Express
; 29(3): 3221-3229, 2021 Feb 01.
Article
em En
| MEDLINE
| ID: mdl-33770925
ABSTRACT
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 Hz/Hz at frequencies higher than 100 Hz.
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01-internacional
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MEDLINE
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En
Ano de publicação:
2021
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Article