KENLEY, England, Dec. 23, 2012 — Optical Surfaces Ltd. is offering large, high-precision windows for demanding applications. Made of IR-transmitting materials including zinc sulphide and germanium, the durable windows protect sensitive optics and sensors in aerial surveillance and reconnaissance applications. The company also offers debris shields that are used in ultrahigh-power laser research to protect critical optical components from ablated materials while maintaining optical performance in the beam line. Typical wavefront precision is from λ/5 to λ/10, typical diameter is 372 mm, and typical thickness is 10 mm. Working with a range of glasses, including BK 7 and fused silica, which offer good homogeneity and transmission from the UV to the near-IR, the company also supplies large, high-precision laser windows up to 600 mm in diameter with typical wavefront error of λ/10 and surface finish of 40-20 to 10-5 scratch-dig. To optimize the performance of high-power lasers, dielectric coatings provide minimum pulse distortion, maximum usable bandwidth and durability.