Robust optical-frequency-comb based on the hybrid mode-locked Er:fiber femtosecond laser
Zhang, Y.; Fan, S.; Yan, L.; Zhang, L.; Zhang, X.; Guo, W.; Zhang, S.; Jiang, H.
Optics Express 25(18): 21719-21725
2017
ISSN/ISBN: 1094-4087 PMID: 29041466 DOI: 10.1364/oe.25.021719
Accession: 060214478
We demonstrate an optical frequency comb in which an Er:fiber-based femtosecond laser employs nonlinear amplifier loop mirror (NALM) and nonlinear polarization evolution (NPE) mode-locking mechanisms. The laser combines advantages of good robustness of NALM and low noise feature of NPE. Our experimental results show that the hybrid mode-locked laser has high power, low relative intensity noise and self-started property, enabling the construction of a robust optical frequency comb system. In-loop relative instabilities of both stabilized repetition rate and carrier-envelope-offset frequency are well below 1 × 10-17 at 1 second integration time.