The laser, acronym for light amplification by stimulated emission of radiation, delivers the three characteristics that getting suitable for many uses both medical and commercially produced.
1. Coherent beam of sunshine.
2. Monochromatic light, and also quality . specific wavelength.
3. Very high lighting.
The very high brightness is the predominant cutting feature resulting from a substantial power concentrated in a narrow beam of low.
The other two features, the consistency and the monochromatic aspect, make the laser marking able to perceive movements of the order of micrometers and therefore very useful for automated precision jobs.
Mechanism and function
To cut tubes or plates carbon dioxide laser is preferred for being able to develop a great power, so that the relationship between the pumping power and the power emitted by the laser reaches even 20%.
The wavelength is between 9.4 and 10.6 micrometers.
The mechanism by which laser can cut the pipe is given from concern of the light beam designed with the energy of the excited electrons of the carbon dioxide molecules.
The laser tube contains inside a gas mixture made up mainly of carbon dioxide and nitrogen with tenacious parts which includes oxygen and helium.
The mechanism starts a great electrical discharge through the laser tube colliding nitrogen molecules amongst eachother.
Nitrogen, in order to quickly get rid off the absorbed energy by emitting a photon, transfers energy towards electrons for this carbon dioxide that ' to discharge' will emit a photon, thus establishing the lazer.
The carbon dioxide laser emits an infrared light beam and the tube aren't able to use materials such as glass lenses and mirrors, since in that wavelength the glass isn't transparent.
So to unravel the problem laser tubes are constructed by using lenses of molybdenum and germanium output mirror (you can also find more cheaper materials).
Once we used to employ a mirrors made of salt nevertheless were impractical since they caused problems like deformation and deterioration due to moisture.