| Substrate: | 
BK7 optical glass |  
| Design Wavelength Range: | 
1150~1700nm (O-,S-,C-,L- bands) |  
| Wavefront Distortion: | 
<Lambda/10 at 633nm typ over surface |  
| Surface Quality: | 
20-10 scratch and dig |  
| Outer Dimension: | 
3.2x3.2x3.2mm |  
| Dimension Tolerance: | 
+/-0.1mm |  
| Extinction Ratio(ER): | 
Tp:Ts > 500:1 |  
| Transmission Efficiency: | 
Tp > 96%; (Tp>99% at C+L band) |  
| Reflection Efficiency: | 
Rs > 99% |  
| Reflected Beam Deviation: | 
90-deg +/-5 arc min  |  
| Anti-Reflection Coating: | 
R < 0.25% over O, S, C, L bands |  
| Clear Aperture: | 
> 85% of outer dimension |  
| Damage Threshold: | 
100mJ/cm2, 8nsec pulse; 100W/cm2 |    |