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Nd:YAG (neodymium-doped yttrium aluminium garnet) is a crystal that is used as a laser medium for solid-state lasers. The triply ionised neodymium [Nd(III)] dopant (i.e. 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 neodymium ion provides the laser activity in the crystal.
Dimension | Diameter from 3 to 40mm |
Nd Dopant level | From 0.3-1.5 atm% |
Wavefront Distortion | 1/8 wave@632 |
Diameter Tolerance | ±0.05mm |
Length Tolerance | ±0.5mm |
Chamfer | 0.10mm@45º |
Flatness | <1/10 wave at 633nm |
Parallelism | < 10 arc Seconds |
Perpendicularity | < 15 arcmin |
Surface Quality | 10/5 Scratch/Dig |
Clear Aperture | >90% |
Damage Threshold | >500MW/cm2 |