研究目的
Investigating the performance of a tunable erbium-doped fiber laser assisted by a random fiber grating introduced by an fs-laser and a tunable fiber Bragg grating.
研究成果
The study successfully demonstrated a tunable erbium-doped fiber laser with a low threshold power of 18 mW and a slope efficiency of up to 13.2%. The wavelength tuning range was up to 4.45 nm, indicating the potential for applications requiring tunable laser sources.
研究不足
The study is limited by the specific configuration of the laser cavity and the materials used, which may not be optimal for all applications. The tuning range and efficiency could potentially be improved with different designs or materials.
1：Experimental Design and Method Selection:
The experiment involves designing a tunable erbium-doped fiber laser with a half-opened cavity using a random fiber grating and a tunable fiber Bragg grating.
2：Sample Selection and Data Sources:
A 7-m-long erbium-doped fiber and a 7-cm-long random fiber grating with ~10,000 index-modified points were used.
3：List of Experimental Equipment and Materials:
Equipment includes a 980 nm laser diode, a wavelength-division multiplexer, a displacement device, an optical spectrum analyzer, and an optical power meter.
4：Experimental Procedures and Operational Workflow:
The EDF is pumped by the laser diode, and the output is measured under varying pump powers and wavelengths adjusted by the displacement device.
5：Data Analysis Methods:
The output spectra and power were analyzed to determine the laser's performance characteristics.
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