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Crystal quartz is a very useful material because of its high
UV, VIS and NIR transmittance, birefringence, ability to rotate
plane polarized light, high damage threshold and resistance
to scratching.
The
optical grade material is featured by highest possible transmittance
throughout range 200 - 2400nm, virtual freedom from bubbles
and inclusions, conformity with Military striae Grade A. Grown
boules are Z - crystals and about 50mm in the direction down
optic axis that limits corresponding dimension in an optical
part.
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