Contents
Source: PI-USA.us
Laser Sources for Material Processing
Laser Types
There are various types of lasers used in laser material processing. Gas lasers, such as CO2 lasers, are known for their long emission wavelength and high output power. Excimer lasers, despite their limitations, are still used for generating intense pulses. Solid-state lasers, including diode-pumped lasers and fiber lasers, offer high performance and efficiency.
Gas and Excimer Lasers
CO2 lasers are widely used due to their specific advantages for certain processes, such as superior absorption in materials like polymers and ceramics. Excimer lasers are important for generating intense nanosecond pulses in the ultraviolet range.
Solid-state Lasers
Solid-state lasers, with advancements like diode-pumping, offer high beam quality and output power. They can operate in various wavelengths through frequency conversion. Bulk solid-state lasers are suitable for energetic pulses, while fiber lasers are known for their efficiency and beam quality.
Direct Diode Lasers
Direct diode lasers are cost-effective and efficient, with advancements in beam quality and output power. They are based on gallium arsenide technology and are suitable for applications like cutting and welding.
Important Parameters of Laser Sources
Laser Specifications
In laser material processing, parameters like output power, wavelength, and beam quality are crucial. Pulse duration and repetition rate also play a significant role in various applications. Laser noise and stability are important considerations for precise processing.
Conclusion
Choosing the right laser source for material processing depends on the specific requirements of the application. Gas lasers, solid-state lasers, and direct diode lasers each offer unique advantages for different processing needs. Understanding the parameters and capabilities of laser sources is essential for achieving efficient and accurate material processing outcomes.
Source: MDPI
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