The newest CO2 lasers, 10-watts to 500-watts are often RF excited diffusion cooled and closed units. 10-100-watt CO2 lasers are air cooled and water cooled at energy levels over 100-watts. With the water chilling requirement, a chilled water chiller is generally necessary. A CO2 laser is approximately 10% effective, therefore 90% of the input energy is dissipated in temperature that really needs to be taken off the laser by sometimes air or water chilling, therefore more decreasing the wall put efficiency. At power degrees around 500-watts, CO2 lasers must be given a laser make-up gas (the lasing medium) to maintain the productivity energy amount of the laser. This make-up gas is really a consumable and adds to the running cost. The made lower power CO2 lasers typically can last 3 to 5 decades before the need to be energized with gas. The "Q" Changed Nd:YAG or Vanadate Laser with a wavelength of 1,060 nm is better useful for marking and scribing applications. These lasers res...
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