研究目的
Investigating the parameters affecting the welding of transparent materials using femtosecond laser pulses.
研究成果
The study demonstrated that femtosecond laser pulses can effectively weld transparent materials by leveraging nonlinear absorption properties. Key parameters such as the Keldysh parameter, pulse energy, duration, and repetition rate significantly affect the welding process. The research highlights the potential of this technique in industrial applications, despite existing challenges.
研究不足
The challenges include welding materials with considerable differences in melting points and coefficients of thermal expansion, the formation of cracks and defects, and the requirement for close contact between materials to prevent plasma escape.
1：Experimental Design and Method Selection:
The study utilized femtosecond laser pulses for welding transparent materials, focusing on nonlinear absorption properties.
2：Sample Selection and Data Sources:
Transparent materials such as glass and polymers, and opaque materials like metals were used.
3：List of Experimental Equipment and Materials:
Nd: YAG Laser with a pulse repeater rating between 50 kHz and
4：2 MHz at 200 fs with a wavelength of 1064 nm. Experimental Procedures and Operational Workflow:
The laser beam was focused on the materials to induce nonlinear absorption, followed by a re-solidification process to achieve welding.
5：Data Analysis Methods:
The effects of various parameters on the welding process were analyzed, including the Keldysh parameter, pulse energy, pulse repetition rate, pulse duration, and nonlinear absorptivity.
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