How are Co2 lasers absorbed?

Carbon dioxide (CO2) lasers are primarily absorbed by water, which is a significant component of biological tissues. The wavelengths emitted by CO2 lasers are specifically around 10,600 nanometers, which correlate closely with the vibrational frequencies of water molecules. When the CO2 laser energy is directed at the skin, the water in the tissues absorbs this energy effectively.

This absorption leads to a rapid increase in temperature within the targeted tissue, causing thermal effects that can result in tissue vaporization or coagulation. This property makes CO2 lasers particularly useful in medical and aesthetic procedures, such as skin resurfacing and surgical cutting, as they can precisely target areas while minimizing damage to surrounding tissues.

The capability of the CO2 laser to be absorbed effectively by water is a critical factor in its operation, differentiating it from other types of lasers that might have different absorption characteristics or are designed for other applications. Understanding this fundamental principle is crucial for practitioners in the field of medical aesthetics, as it informs treatment choices and techniques.