Journal
FRONTIERS IN PHYSICS
Volume 10, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fphy.2022.1073201
Keywords
erbium fiber-based femtosecond optical frequency comb; dual-comb fiber laser; mode-locked laser; non-linear amplifying loop mirror; dual-comb spectroscopy
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Funding
- Strategic Priority Research Program of the Chinese Academy of Sciences
- Quantum Control and Quantum Information of the National Key Research and Development Program of China
- National Natural Science Foundation of China
- West Light Foundation of the Chinese Academy of Sciences
- [XDB35030101]
- [2020YFA0309800]
- [12103060]
- [XAB2019B19]
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In this study, a polarization-multiplexed, erbium-doped dual-comb fiber laser based on an all-polarization-maintaining cavity configuration was presented. The laser demonstrated high relative stability and mutual coherence.
In this study, we present a polarization-multiplexed, erbium-doped dual-comb fiber laser based on an all-polarization-maintaining cavity configuration. We observed that the dual-comb fiber laser easily realized the self-starting mode-locking operation due to the non-linear amplifying loop mirror (NALM) with a non-reciprocal phase shifter. Furthermore, owing to the sharing of the NALM part, the two outputs from this laser configuration had similar center wavelengths, with small different repetition rates ( increment f (rep)). In the free-running operation, the standard deviation of relative stability for & UDelta;f (rep) of 2.09 kHz was measured to be 1.59 Hz, and the full width at half-maximum of the relative beat note between the two frequency combs in the optical frequency domain was approximately 1 kHz. These results show that the two frequency combs from this laser configuration have high relative stability and mutual coherence.
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