研究目的
Investigating the operating principle and characteristics of Q-switched fiber lasers, specifically focusing on active Q-switching techniques for single and dual-wavelength operation.
研究成果
The study successfully demonstrates the operation of actively Q-switched fiber lasers in single and dual-wavelength modes. It highlights the importance of cavity loss adjustment for dual-wavelength operation and the potential of using fiber Bragg gratings and Sagnac interferometers for wavelength tuning and selection.
研究不足
The study is limited by the specific configurations and components used, such as the type of doped fiber and modulators. The need for cavity loss adjustment for wavelength separations above a certain range is also a limitation.
1：Experimental Design and Method Selection:
The study involves the design of fiber lasers using Er/Yb doped fiber as a gain medium and an acousto-optic modulator for Q-switching. Variations include the use of fiber Bragg gratings and a Sagnac interferometer for wavelength selection and tuning.
2：Sample Selection and Data Sources:
The experiments utilize Er/Yb doped fiber and specific optical components like fiber Bragg gratings and a Sagnac interferometer.
3：List of Experimental Equipment and Materials:
Equipment includes an acousto-optic modulator, fiber Bragg gratings, Sagnac interferometer, and Er/Yb doped fiber.
4：Experimental Procedures and Operational Workflow:
The setup involves configuring the fiber laser with the mentioned components, adjusting for single or dual-wavelength operation, and measuring output characteristics.
5：Data Analysis Methods:
Output spectra and pulses are analyzed using an optical spectrum analyzer and oscilloscope, respectively.
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