Round optical window 05Q20RAR.L

fused silica

A nanostructure pattern is created on the surface of high purity fused silica windows to produce a high quality antireflection effect. Because this manufacturing process uses no thin films materials, the lens has a very high damage threshold limit. •High laser damage resistance for pulsed or CW applications •Chemically and mechanically robust/contamination resistant •Reflection loss down to 0.1% •No surface absorption – reduced thermal lensing •Improved beam parameters and long term stability Nano-Texture Technology Sub-wavelength anti-reflection (AR) nano-textures etched directly into the surface of laser grade fused silica windows and lenses exhibit reflection losses down to 0.1% over wide bandwidths from UV-NIR. Because no dissimilar materials are deposited as with thin film AR coatings, there is no added absorption or surface heating. As a result, thermal lensing is reduced, resulting in improved beam parameters and long term stability. Extensive laser damage tests have shown significantly increased pulsed and CW laser damage thresholds compared to traditional thin-film AR coatings. Extreme Broadband Anti-reflection Performance L Type AR nano-textures inherently perform over unprecedented bandwidths allowing coverage of multiple laser wavelengths in a single optic. Newport offers the long wavelength type, specified as “L” type AR textures R<0.1% 500-800nm, R<0.3% 900-1100nm. Extreme Broadband Anti-reflection Performance S Type Newport offers the short wavelength type, specified as “S” type AR textures R<0.1% 250nm-360nm, R<0.3% 400-550nm.