• GaAs is used for optical windows, lenses, mirrors, prisms and optical blanks, plates, disks, sheets, slabs particularly for infrared applications.

• GaAs - transparent in wide spectral range from yellow (visible) to far IR. GaAs material is a chemically inert, non-hygroscopic and highly pure product that is very effective in many optical applications due to its extremely low bulk losses, high resistance to thermal shock and stability in virtually all environments, easily machined. To obtain superior transmittance, GaAs crystals are grown by Chemical Vapor Deposition process . GaAs is polycrystalline material, demonstrates superior CO2 laser transmittance and is employed in the transmission optical components used in CO2 laser processing.

• Mateial: GaAs

• Diameter: 20mm 19mm

• Focal length: 4"(101.6mm),2.5"(63.5mm),2"(50.8mm),1.5"(38.1mm)

Laser light path schematic

① Laser tube ② First mirror ③ Second mirror ④ Third mirror ⑤ Focus lens

① Lens tube
② Focus lens (Be sure lens convex faces lazer and concave faces material)
③ Lens ring ④ Nozzle ⑤ Gas nozzle
⑥ Focal length (Distance Between the Lens and the cutting/engraving material)
⑦ Working table

Lens cleaning

① For loose lint or dust: use an air bulb to blow off any loose particles.
② For smudges or fingerprints: squeeze a few drops of acetone onto the lens tissue, wetting the diameter of the optic.
③ For droplets or oils: use a cotton swab and distilled vinegar to wipe the lens, then use a wet cotton swab to remove any acetic acid. Clean with a dry cotton swab.