from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A hard synthetic yttrium aluminum garnet used in laser technology and as a gemstone.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
Yttrium aluminium garnet, a synthetic material used in lasersand formerly as an artificial gemstone.
from The American Heritage® Dictionary of the English Language, 4th Edition
These lasers include nd: YAG lasers and diode lasers.
At the Centennial branch, Alison Baird (that's her reading in the picture at right) and I were in a large multi-purpose room packed with more than 100 teens, members of an incredibly popular after-school library group (YAG, it's called -- Youth Action Group, if I remember correctly).
If there are a few that stand out, or to decrease the overall number, I use a YAG or ruby laser the kinds that target pigment to get rid of them.
At Mount Sinai we did an in vivo study to see if pigment lasers Q-switched Nd:YAG could change the DNA or cause mutations in skin cells.
There are fractional erbium:YAG lasers the type I use in my office and fractional CO2 lasers, which are much more intense.
A pigment-specific laser such as Nd:YAG can get rid of sunspots and brown spots on the backs of the hands.
Green ink responds only to the ruby laser, for example, and red responds only to the Nd:YAG.
Old-school blue and black inks are the easiest to remove because pigment-specific lasers, such as the ruby and YAG, target those dark colors successfully.
Dermabrasion, a technique to vaporize the skin by way of electrocautery or ablative lasers such as CO2 or erbium: YAG lasers, can remove raised scars.
An exception to this rule: certain birthmarks around the eye and on the back, called “the nevus of Ito and Ota” respectively, are more common in darker skin types and are treated with the Nd:YAG laser.