• High Reflectance in Visible and NIR Regions
• Protective SiO₂ Overcoat Prevents Oxidation
• Laser Damage Threshold: 3 J/cm² (1064 nm, 10 ns Pulse, 10 Hz, Ø1.000 mm)

Silver coated mirrors offer the highest reflection in the visible-NIR spectrum (450 nm – 2 µm, R_avg >97.5%) of any metallic mirror. While excellent in the visible, silver mirrors also offer high reflection in the IR (2 – 20 µm, R_avg >96%). In order to protect these mirrors from oxidation, they have a durable SiO₂ overcoat with an approximate thickness of 100 nm.

Thorlabs also offers these mirrors in 10 packs at a 10% discount over the regular price.

• Diameter: 0.276" (7.0 mm)
• Thickness: 0.079" (2.0 mm)
• Reflectivity: R_avg >97.5% from 450 nm – 2 µm; R_avg >96% from 2-20 µm
• Substrate: Fused Silica
• Front Surface Flatness: ?/10 @ 633 nm
• Surface Quality: 40-20 Scratch-Dig
• Parallelism: <3 acrmin
• Clear Aperture: >90% of Diameter
• Damage Threshold: 3 J/cm² at 1064 nm, 10 ns, 10 Hz, Ø1.000 mm