20mm Dia Protected Gold, λ/20 Mirror

Product Details Precision Fused Silica Substrate 20-10 Surface Quality Low Coefficient of Thermal Expansion TECHSPEC λ/20 First Surface Mirrors are polished to industry leading surface accuracy and quality specifications to minimize reflected wavefront error. These mirrors feature a precision fused silica substrate with a low coefficient of thermal expansion. Multiple coating options are available, allowing these mirrors to be integrated into applications spanning the visible through infrared spectra. TECHSPEC λ/20 First Surface Mirrors are ideal for beam steering and reflection applications and are available in a variety of size, thickness, and coating options. Note : Surface flatness is measured before coating. Specifications General Type: Flat Mirror Physical & Mechanical Properties Diameter (mm): 20.00 +0.0/-0.20 Thickness (mm): 3.00 ±0.20 Clear Aperture (%): 90.00 Parallelism (arcsec): 30.00 Edges: Ground, protective bevel as needed Back Surface: Commercial Polish Optical Properties Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More Fused Silica (Corning 7980) Coating: Protected Gold (700-10000nm) Coating Type: Metal Coating Specification: R avg >96% @ 700 – 2000nm R avg >96% @ 2000 – 10,000nm Wavelength Range (nm): 700 – 10000 Surface Flatness (P-V): λ/20 (flatness pre-coating) Surface Quality: 20-10 Regulatory Compliance RoHS 2015: Compliant × Certificate of Conformance: View × Reach 247: Compliant ×