POWDER USED IN LASERS Crossword Clue

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Crossword Puzzle Infos
Yttria is a powder used in lasers. It is an oxide of yttrium, a rare earth metal, and is composed of three oxygen atoms and one yttrium atom. Yttria is used in lasers because it is able to absorb energy from the laser beam and convert it into heat, which helps to increase the efficiency of the laser. Yttria is also used in other applications such as medical imaging and optical coatings.
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