研究目的
Investigating the generation of a passively Q-switched Nd:YAG laser at 1074.1 nm by optimizing cavity coatings to suppress parasitic transitions and amplify the 1074 nm line.
研究成果
The study successfully demonstrates a passively Q-switched Nd:YAG laser at 1074.1 nm, achieving stable pulses with a peak power of 1584 W and a pulse width of 23.7 ns. The optimization of cavity coatings effectively suppresses parasitic transitions, enabling single-wavelength operation at 1074.1 nm.
研究不足
The study is limited by the specific cavity design and coatings used, which may not be optimal for all applications. The pulse width and peak power could potentially be improved with higher reflectivity coatings.
1：Experimental Design and Method Selection:
The study employs an elaborate plane-plane cavity design with optimized coatings to suppress unwanted transitions and amplify the 1074 nm line.
2：Sample Selection and Data Sources:
A Nd:YAG cuboid with dimensions of 3 × 3 × 5 mm3, doped with
3：1 at. % Nd3+, is used as the luminescent medium. List of Experimental Equipment and Materials:
The setup includes a fiber-coupled LD for pumping, a Cr:YAG crystal for Q-switching, and mirrors with specific coatings.
4：Experimental Procedures and Operational Workflow:
The laser's performance is evaluated in both CW and Q-switched regimes, measuring output power, pulse width, and repetition rate.
5：Data Analysis Methods:
The output spectrum is analyzed to confirm single-wavelength operation, and pulse characteristics are measured and calculated.
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