D-shaped Mirror, Gold, Fused Silica, 25.4 mm, λ/10, 650-20,000 nm

The 10DD20ER.4 is a D-shaped Gold Broadband Mirror with a 25.4 mm (1.0 inch) diameter, a thickness of 6.0 mm, and a flatness of λ/10. The mirror's straight edge allows multiple tightly packed beams or sources to be separated. The 10DD20ER.4 has a 40-20 surface quality and an average reflectivity greater than 96% from 650 - 1,700 nm and >98% from 1,700 - 20,000 nm (1.7 - 20 µm).