Er:YAG Laser

Er:YAG lasers are solid-state lasers whose lasing medium is erbium-doped yttrium aluminium garnet. The triply ionised erbium dopant (a substance added in minute amounts to another pure substance to alter its conductivity) typically replaces a small fraction of the yttrium ions in the host crystal structure, since the two ions are of similar size. The erbium provides the laser activity in the crystal. Er:YAG lasers typically emit light with a wavelength of 2940 nm, which is infrared light. Unlike Nd:YAG laser, the output of an Er:YAG laser is strongly absorbed by water. This fact limits the use of Er:YAG laser in surgery, and in many other laser applications, to where water is present (healthy skin has a high water content).

Application

•Atrophic acne scars

  • Herpes simplex scars, smallpox scars
    •Sun damaged skin
    •Mild to moderate facial wrinkles
    •Uneven pigment (brown age spots, freckles, melasma)
    •Seborrhoeic keratosis and other benign skin growth
    •Some superficial non-melanoma skin cancers
    •Some vascular birthmarks (capillary vascular malformations)