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CO2 Laser Is A Molecular Laser
- May 21, 2018 -

CO2 laser is a kind of molecular laser, and the main substance is carbon dioxide molecule. Like other gas lasers, the CO2 laser's operating principle is also complicated in its stimulated emission process. There are three different kinds of motions of molecules, that is, the movement of electrons in the molecule. The motion determines the electronic energy state of the molecule. Second, the atomic vibration in the molecule, that is, the atoms in the molecule periodically vibrate around their equilibrium position—and It is determined by the vibrational energy state of the molecule; the third is the rotation of the molecule, ie the molecule rotates continuously in space as a whole, and this motion of the molecule determines the rotational energy state of the molecule. Molecular movements are extremely complex and therefore their energy levels are also complex.

Carbon dioxide laser is a molecular laser. The main substance is carbon dioxide molecules. It can represent a variety of energy states depending on the shape of its vibration and rotation. The basic energy network is shown in Figure 1. The mixed gas in carbon dioxide is a plasma (plasma) formed by a low pressure gas (usually 30-50 Torr) due to the release of electrons. As the Maxwell-Boltzmann distribution law states, molecules in plasma exhibit a variety of excited states. Some will show a high-energy state (00o1) which shows an asymmetric swing state. When colliding with a hollow wall or naturally emitting, this molecule also accidentally loses energy. The natural emission of this high-energy state will decrease to a symmetrically oscillating form (10o0) and emit photons (a 10.6 μm wavelength beam) that may propagate in any direction. Occasionally, a type of photon that will travel down the optical axis cavity will also oscillate in the resonance mirror.