研究目的
Investigating the generation of high-power harmonic noise-like square pulses at 1.61 μm in an Er:Yb co-doped all-fiber mode-locked laser.
研究成果
The study successfully demonstrates the generation of high-power harmonic noise-like square pulses at 1.61 μm in an Er:Yb co-doped all-fiber mode-locked laser, achieving a record average output power of 1.26 W. This represents the first demonstration of a watt-level harmonic NLSP in such a laser system.
研究不足
The study is limited by the specific configuration of the Er:Yb co-doped fiber laser and the operational parameters such as pump power and polarization state adjustments.
1：Experimental Design and Method Selection:
The study involves a dumbbell-shaped fiber laser system with linear section and two nonlinear optical loop mirrors (NOLM).
2：Sample Selection and Data Sources:
A 976-nm multimode laser diode with maximum output power of
3：7 W is used. The active fiber is a 1 m long Er:
Yb co-doped double-cladding fiber.
4：List of Experimental Equipment and Materials:
Includes a (2+1)×1 combiner, cladding-power-stripper (CPS), 600 m long SMF-28e+, a 10/90 fused coupler, and two polarization controllers (PCs).
5：Experimental Procedures and Operational Workflow:
The setup involves adjusting pump power and polarization state to achieve mode-locking.
6：Data Analysis Methods:
The study analyzes pulse waveforms, optical spectra, and RF spectrum to characterize the laser's performance.
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