Working principle: The CO2 molecule is a linear symmetrical molecule, and the two oxygen atoms are on both sides of the carbon atom, which represents the equilibrium position of the atom. Each atom in the molecule is always in motion, constantly vibrating around its equilibrium position.

According to molecular vibration theory, CO2 has three different vibration modes:
1.The two oxygen atoms vibrate in opposite directions along the molecular axis, that is, the two oxygen atoms reach the maximum vibration value and the equilibrium value at the same time during the vibration, while the carbon atom in the molecule is still, so its vibration is called symmetry vibration.

2.The two oxygen atoms vibrate in the direction perpendicular to the molecular axis, and the vibration direction is the same, while the carbon atom vibrates in the opposite direction perpendicular to the molecular axis. Since the vibration of the three atoms is synchronous, it is also called deformation vibration.

3.The three atoms vibrate along the axis of symmetry, and the vibration direction of the carbon atom is opposite to that of the two oxygen atoms, which is also called antisymmetric vibration energy. In these three different modes of vibration, different sets of energy levels were determined.

Advantages of CO2 lasers:
CO2 lasers have the advantages of uniform working medium, good coherence, simple structure, convenient operation, long-term stable and continuous work, good beam quality, high efficiency, and low cost. The specific outstanding advantages are as follows: First, it uses the transition between the vibration and rotation energy levels of CO2 molecules, and has relatively abundant spectral lines, and there are dozens of spectral lines near 10 microns. The laser output; second, its output The band is just the window of the atmosphere (that is, the atmosphere has a high transparency to this wavelength), so it is widely used in the national economy and national defense.

Released by Jinan APEX Machinery Equipment Co., Ltd.