Nd: doping 0.1%,0.2%,0.27%,0.5%,1%,2%,3%,5%
Dimension tolerance:+/-0.1mm
Flatness: /8l @633nm 
Surface quality: Scratch/Dig 10/5
Parallelism:  better than 20 arc sec.
Perpendicularity: better than 15 arc min
Angle tolerance: < 0.5degree
AR coating: AR:R<0.2%@1064nm, R<0.5@808nm
HR:R>99.8%@1064nm,R<5%@ 808nm
Clear aperture: >90% central area
Transmitting wavefront distortion: less than /8l @ 633nm
Quality Warranty Period: one year under proper use