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

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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.　©　2021　Optical　Society　of　America.

Keyword：

Silica Pumping (laser) Thermal expansion Fiber lasers

Author Community：

[ 1 ] [ZHANG, QIAN]Institute of Laser Engineering, Beijing University of Technology, Beijing; 100124, China
[ 2 ] [ZHANG, QIAN]OzGrav-UWA, Department of Physics, University of Western Australia, WA; 6009, Australia
[ 3 ] [HOU, YUBIN]Institute of Laser Engineering, Beijing University of Technology, Beijing; 100124, China
[ 4 ] [HOU, YUBIN]OzGrav-UWA, Department of Physics, University of Western Australia, WA; 6009, Australia
[ 5 ] [SONG, WEIHUA]Institute of Laser Engineering, Beijing University of Technology, Beijing; 100124, China
[ 6 ] [WANG, XI]Institute of Laser Engineering, Beijing University of Technology, Beijing; 100124, China
[ 7 ] [BLAIR, CARL]OzGrav-UWA, Department of Physics, University of Western Australia, WA; 6009, Australia
[ 8 ] [CHEN, XU]OzGrav-UWA, Department of Physics, University of Western Australia, WA; 6009, Australia
[ 9 ] [LI, JU]OzGrav-UWA, Department of Physics, University of Western Australia, WA; 6009, Australia
[ 10 ] [ZHAO, CHUNNONG]OzGrav-UWA, Department of Physics, University of Western Australia, WA; 6009, Australia
[ 11 ] [WANG, PU]Institute of Laser Engineering, Beijing University of Technology, Beijing; 100124, China

Reprint Author's Address：

[hou, yubin]institute of laser engineering, beijing university of technology, beijing; 100124, china;;[hou, yubin]ozgrav-uwa, department of physics, university of western australia, wa; 6009, australia

Email：

houyubin@bjut.edu.cn

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