Specifications:
| Dimension Tolerance | ±0.1mm |
| Optical Axis Orientation | ±0.5deg |
| Surface Quality | 20/10 Scratch and Dig |
| Clear Aperture | >90% |
| Surface Flatness | <λ/4@633nm |
| Wavefront Distortion | <λ/2@633nm |
| Parallelism | <15 arc seconds |
| Beam Deviation | <3 arc minutes |
| AR Coating | Per your Request |
Physical and Optical Properties:
| Transparency Range | 189~3500nm |
| Density | 3.85g/cm3 |
| Mohs Hardness | 4.5 glass like |
| Optical Homogeneity | Δn≈10-6/cm |
| Therm-Optic Coefficients | dno/dT= - 9.3x10-6/°C dne/dT= - 16.6x10-6/°C |
| Thermal Expansion Coefficients(25°C~900°C) | aa=4x10-6/K ac=36x10-6/K |
| Linear Absorption Coefficients | a<0.125px-1 from 300nm to 2300nm |
| Damage Threshold | 1GW/cm2 at 1064nm, 200MW/cm2 at 532nm |
Refractive Index Birefringence (Δn=ne-no) Walk-Off Angle at 45 deg(ρ) | ne=1.53797, no=1.65790, Δn= - 0.11993, ρ= - 4.9532° at 1064nm |
| Sellmeier Equations (λ in um) | no2=2.7471+0.01878/( λ2-0.01822)-0.01354λ2 ne2=2.37153+0.01224/(λ2-0.01667)-0.01516λ2 |
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