| Material | UVFS | 
| Surface quality | 40-20 scratch & dig (MIL-PRF-13830B) | 
| Clear aperture | 90% of the diameter | 
| Diameter tolerance | +0.00, -0.12 mm | 
| Thickness tolerance | ±0.2 mm | 
| Surface irregularity | λ/8 @ 633 nm | 
| Concentricity | 3 arcmin | 
| Paraxial focal length | ±2% @ 800 nm | 
        
COATING            
| Technology | Electron beam multilayer dielectric | 
| Adhesion and Durability | Per MIL-C-675A. Insoluble in lab solvents | 
| Clear Aperture | Exceeds central 85% of diameter | 
| Damage Threshold | 50 mJ/cm2, 50 fsec pulse, 100 Hz, 800 nm typical | 
| Coated Surface Flatness | λ/10 at 633 nm over clear aperture | 
| Angle of incidence | 0° | 
| EKSMA Optics Femtoline Thin Lenses 90.14 kB | 
Femtoline Thin AR coated at 700-900 nm Lenses for applications with broadband femtosecond Ti:Sapphire laser pulses. Presented lenses ensure low Group Delay Dispersion of broadband femtosecond Ti:Sapphire laser pulses.