研究目的
Investigating the power scaling of phosphosilicate fiber Raman laser to achieve high power output at 1.24 μm.
研究成果
The study successfully demonstrated a high power phosphosilicate fiber Raman laser at 1238 nm with over 220 W output, achieving a saturated optical efficiency of 64%. This represents a significant advancement in the power scaling of phosphosilicate fiber Raman lasers, with potential for further optimization and application in generating high power lasers at other wavelengths.
研究不足
The splicing loss between phosphosilicate fiber and standard single mode fiber and the optical losses from FBGs and the phosphosilicate fiber length limit the conversion efficiency.
1：Experimental Design and Method Selection:
The experiment utilized a high power 1064 nm Yb fiber laser as the pump source and a 1238 nm Raman fiber oscillator with a 30 m long phosphosilicate fiber as the gain medium.
2：Sample Selection and Data Sources:
The phosphosilicate fiber had a core NA of
3：18, a 5 μm core diameter, and a 125 μm cladding diameter. List of Experimental Equipment and Materials:
Included a home-made Yb fiber laser, phosphosilicate fiber, fiber Bragg gratings (FBGs), and an optical spectrum analyzer (OSA).
4：Experimental Procedures and Operational Workflow:
The setup involved pumping the phosphosilicate fiber with the Yb fiber laser and measuring the output power and spectrum.
5：Data Analysis Methods:
The output power and spectrum were analyzed to determine the efficiency and linewidth of the Raman laser.
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