Laser Research Optics introduces line of laser lenses for steel cutting

A line of zinc selenide (ZnSe) laser focusing lenses from Laser Research Optics (Providence, RI) is available in focal lengths from 3 to 10 in. in 0.5-in. increments for 200 W to 4 kW CO₂ cutting lasers used to process heavy steel plate. The lenses are offered with the company's Cool-Cut coating, which absorbs <0.15% of laser energy to protect against heat damage, or with standard antireflection coatings to provide <0.2% total absorption. Optimized for 10.6 µm, the lenses are offered in 1–2 in. OD sizes with thicknesses ranging from 0.250 to 0.380 in. They come in plano-convex and -meniscus configurations and can be supplied plain or mounted.

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