SUBSTRATE SPECIFICATIONS
Refractive index | Suprasil® – Nd=1.45846 |
Design wavelength | 1030 nm (refractive index N=1.4496) |
Surface quality | 40-20 scratch & dig (uncoated) |
Clear aperture | >85% of diameter |
Diameter tolerance | +0.0, -0.05 mm |
Bevel | 0.3 mm max @ 45° |
Center thickness tolerance | ≤0.05 mm |
EFL tolerance | ≤0.1% |
Asphere figure error P-V | ±1 µm |
Surface form deviation RMS | ≤0.3 µm |
Slope error | <0.3mrad/mm |
Centration | <3 arc min |
COATING SPECIFICATIONS
Technology | Ion Beam Sputtering |
Adhesion and Durability | Per MIL-C-675A. Insoluble in lab solvents |
Clear Aperture | Exceeds central 85% of diameter |
Reflectivity at 1000-1080 nm | <0.1% at AOI=0-15° and <0.3% at AOI=15-33° |
Damage Threshold | >560 mJ/cm2, 200 fsec pulse, 200 Hz, 1030 nm < >16M W/cm2 CW at 1070 nm, linear power density 172 kW/cm |
Absorption in coating | <1 ppm at 1070 nm |
Angle of incidence | 0-33° |
Features:
CNC polished precision aspherical lenses are designed for diffraction-limited performance. We offer convex - aspherical lenses made of Suprasil specially designed to have the best performance and the highest laser induced damage threshold. The standard lenses can be supplied uncoated or anti-reflective coated at 1000-1080nm. Other coating regions are available according the request.