• UV Enhanced Aluminum: R_avg >90% from 250 - 450 nm
• Surface Flatness: λ/10
• Surface Quality: 40-20 Scratch-Dig

This Thorlabs’ UV-Enhanced Aluminum mirror is a cost effective solution for UV applications. Because bare aluminum is extremely delicate and susceptible to damage, a protective overcoat is layered over the aluminum to prolong the life of the mirror. Our UV-enhanced coating is made by using an overcoat of MgF₂, which offers >90% reflection from 250 to 450 nm.

• Dimensions: Ø1/2" (12.7 mm)
• Thickness: 0.236" (6.0 mm)
• Reflectivity: R_avg >90% from 250 - 450 nm
• Substrate: Fused Silica
• Flatness: λ/10 @ 633 nm
• Parallelism: 3 arcmin
• Clear Aperture: >90% of Diameter
• Damage Threshold: 0.3 J/cm² at 355 nm, 10 ns, 10 Hz, Ø0.381 mm