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Photonics Spectra
Apr 2005
Meller-Optics.jpgThe “2005 Stock Parts List” from Meller Optics Inc. describes optics that can be purchased online, including more than 1000 sapphire types in various configurations and more than 1500 others made from silicon, germanium, barium fluoride, calcium fluoride, laser glasses, and fused- and crystalline quartz. The overrun list provides specifications, prices, and information on available quantities. The optics typically have dimension tolerances from ±0.001 to ±0.005 in.,10 waves to l/10 flatness and 10-5 to 80-50 scratch-dig surface finishes.

barium fluoride
A relatively hard crystal, highly resistant to excessive energy radiation, that is frequently used for optical windows, prisms and lenses transmitting from the vacuum UV into the IR.
calcium fluoride
An optical material used in place of crown glass to produce lenses with extraordinary correction of chromatic aberrations. Its high coefficient of thermal expansion and its tendency to absorb moisture limit its range of application.
A crystalline semiconductor material that transmits in the infrared.
barium fluorideBreakthroughMediacalcium fluoridegermaniumlaser glassesMeller Optics Inc.New Mediaopticssiliconlasers

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