研究目的
Investigating the application of black phosphorus (BP) as a saturable absorber (SA) in Yb-doped fiber lasers for generating ultrashort pulses across various wavebands.
研究成果
The study successfully demonstrated various pulse types in Yb-doped fiber lasers using BP-SA, including ultra-stable, wavelength-tunable, and harmonic mode-locked pulses. The research highlights BP's potential in photonics and electromagnetics, suggesting its applicability in practical laser systems.
研究不足
The study primarily focuses on the application of BP in Yb-doped fiber lasers, and the stability and performance of the laser under different conditions could be further optimized. The wavelength-tunable range and cavity loss are areas identified for potential improvement.
1：Experimental Design and Method Selection:
The study utilized BP as a saturable absorber in Yb-doped fiber lasers to explore its potential for generating ultrashort pulses. The mineralizer-assisted gas-phase transformation method was used for the growth of high-quality BP crystals, and the SA was produced by vacuum filtration method.
2：Sample Selection and Data Sources:
BP crystals were used as cathode, and a piece of platinum foil as anode in the exfoliation process. TBA·HSO4 in anhydrous, deoxygenated propylene carbonate was used as electrolyte.
3：List of Experimental Equipment and Materials:
BP crystals, platinum foil, TBA·HSO4, propylene carbonate, Raman spectroscopy for verification.
4：Experimental Procedures and Operational Workflow:
The BP sample was verified by Raman spectroscopy, and its nonlinear optical transmittance was characterized under different input power intensities.
5：Data Analysis Methods:
The modulation depth and saturated intensity of BP were fitted from the nonlinear optical transmittance data.
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