Carbon dioxide laser marking machine principle

CO2 laser marking machine is the use of CO2 gas as the working medium of the laser marking machine, CO2 laser to CO2 gas as a medium, CO2 and other auxiliary gases into the discharge tube in the electrode with high voltage, the discharge tube produces a glow discharge, so that the gas releases the wavelength of the 10.64um laser, the amount of laser light amplified by the vibrating mirror scanning, mirrors, reflectors and field mirrors focusing, in the computer and laser Under the control of computer and laser marking board card, images, words, numbers and lines can be marked on the workpiece according to the user's requirements.

Carbon dioxide laser is a molecular laser, the main substance is carbon dioxide molecules, it can be expressed in a variety of energy states depending on its vibration and rotation form. The mixture of gases in carbon dioxide (carbon dioxide, helium, nitrogen) is a plasma formed by the low pressure gas due to the release of electrons. As stated in the Maxwell-Boltzmann distribution law, in plasma, the molecules exhibit a variety of excited states. Some will exhibit high energy states. It behaves as an asymmetric oscillating state. Such molecules also lose energy by chance when colliding with a hollow wall or by natural emanation.

Through natural emanation, this high-energy state descends to a symmetrical oscillating form as well as radiating photons (a beam of light with a wavelength of 10.6 μm) that may propagate in any direction, one of which travels along the optical path and oscillates in the galvanometer. Subsequently, it is reflected by the total reflector, so that the laser in the resonant cavity forms a laser beam.

CO2 laser marking machine features

1, non-contact processing: can be in any regular or irregular surface marking out exquisite marking;

2, wide range of application: in the vast majority of non-metallic materials and part of the metal materials marked with graphics;

3、Low running cost: marking speed and marking a shape, very few consumables, and thus low running costs;

4, assembly line marking: can be integrated with other equipment on the production line to improve the automation of the production line;

5, clear marking, permanent non-erasable, beautiful, and effective anti-counterfeiting, long service life, no pollution.