研究目的
Investigating the effects of different additional phase biases on the self-starting ability and output characteristics of a mode-locked fiber laser.
研究成果
The study successfully demonstrates a robust all polarization-maintaining femtosecond fiber laser with different additional phase biases, showing that the phase bias can effectively influence the self-starting ability and output characteristics of the laser. The results provide valuable insights for designing high repetition rate mode-locked femtosecond fiber lasers.
研究不足
The study is limited to the specific configuration of the all polarization-maintaining fiber laser and the three tested phase biases. Potential areas for optimization include exploring additional phase biases and configurations to further lower the mode-locking threshold and improve output characteristics.
1：Experimental Design and Method Selection:
The experiment involves designing a compact all polarization-maintaining mode-locked femtosecond fiber laser with three different non-reciprocal phase shifters to study their impact on the laser's performance.
2：Sample Selection and Data Sources:
The laser uses a high-gain
3：8 m-long PM-EDF with specific absorption and dispersion characteristics. List of Experimental Equipment and Materials:
Includes a waveplate (WP), Faraday rotator (FR), polarizing beam splitters (PBSs), PM-EDF (PM-ESF-7/125, Nufern), laser diode (LD), wavelength-division multiplexer (WDM), optical spectrum analyzer, real-time oscilloscope, InGaAs photodiode detector (PD), radio frequency (RF) signal analyzer, power meter, and a commercial autocorrelator.
4：Experimental Procedures and Operational Workflow:
The setup involves optimizing the cavity structure to achieve self-start mode-locking, measuring output spectra, RF spectra, pulse trains, and autocorrelation traces.
5：Data Analysis Methods:
Analysis includes measuring the output power as a function of pump power, comparing the effects of different phase biases, and evaluating the laser's performance metrics.
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