Substrate
| Material | UV grade fused silica | 
| S1 Surface Flatness | λ/10 typical at 633 nm | 
| S1 Surface Quality | 20-10 scratch & dig (MIL-PRF-13830B) | 
| S2 Surface Quality | Commercial polish | 
| Diameter Tolerance | + 0.00 mm, - 0.12 mm | 
| Thickness Tolerance | ± 0.25 mm | 
| Wedge | < 3 minutes | 
| Chamfer | 0.3 mm at 45° typical | 
Coating
| Technology | Electron beam multilayer dielectric Ion beam sputtering (HHR series)  | 
        
| Adhesion and Durability | Per MIL-C-675A. Insoluble in lab solvents | 
| Clear Aperture | Exceeds central 85% of diameter | 
| Damage Threshold | 1 J/cm2, 8 nsec pulse, 1064 nm typical | 
| Coated Surface Flatness | λ/10 at 633 nm over 85% of diameter | 
| Angle of incidence | from 0° to 45° | 
| EKSMA Optics Broadband and Laser Line Mirrors
						 206.77 kB  | 
					
Broadband and laser line dielectric mirrors with high reflectance (greater than 99% over specified range minimum) that operate at all angles of incidence from 0° to 45°. Broadband and laser line mirrors are available for 280-400 nm, 349-355 nm, 400-750 nm, 524-532 nm, 532+1064 nm, 750-1100 nm, 1047-1064 nm wavelength ranges.