What is the primary absorption characteristic of Er:YAG lasers?

The primary absorption characteristic of Er:YAG lasers is related to their strong absorption in water, which peaks in the infrared spectrum. Erbium-doped YAG lasers emit light at a wavelength of approximately 2940 nm, which coincides with a significant absorption peak of water. This strong interaction with water makes Er:YAG lasers particularly effective in medical and dental procedures where efficient tissue ablation is desired. The high absorption by water also leads to minimal thermal damage to surrounding tissues, as the energy is absorbed primarily by the water content in the target tissue.

This characteristic is essential for applications in cosmetic surgery, dermatology, and other fields where precise and controlled removal of tissue is required, allowing for better patient outcomes and quicker recovery times.