Erbium lasers are a type of solid-state laser that use erbium, a rare earth element, as the active medium. They emit light at a wavelength of 1540 nanometers, which is particularly effective for various medical and industrial applications. These lasers are known for their precision and minimal thermal damage, making them suitable for delicate procedures. In medicine, erbium lasers are commonly used in dermatology for skin resurfacing and treating scars. They can also be employed in dental procedures for cutting and removing tissue. Their versatility and effectiveness have made them a popular choice in both cosmetic and surgical fields.