Optical Grade Quartz Wafers

Optical Grade Quartz Wafers
Our abundance experience at growing and mass production for optical grade quartz . We are equipped with advanced facilities at Crystal growing, wafer lapping, polishing and checking. 
Manufacturer of Fused Silica & Quartz & Glass Wafers, Piezo Single Crystal Wafers, Series Glass & Fused Silica Wafers, Single Crystal wafers.
Our R&D is active at developing and researching from big material to process 6” optical grade quartz wafer. 
Product Parameters

Material Quartz Crystal 
Cutting Angle X/Y/Z-cut  etc
Diameter/size 1”(25.4mm)-4”(100mm)
Tol(¯) <0.20 mm
Thickness 0.05mm  or more
LTV (5mmx5mm)  <1³´µm
TTV  <3³´µm
Bow -30<bow<30
Warp <40³´µm
Surface Type Single Side Polished /Double Sides Polished
Polished side Ra <0.5nm
Back Side Criteria General is 0.2-0.5³´µm or as customized
Scratch/Dig Bette than 40/20
Edge Criteria R=0.2mm or Bullnose
Material Property ECD Better than grade 4
Inclusion Better than grade I
Q-Value Better than grade C
Wafer Surface Criteria Particles ￠>0.3 ³´µm <= 30
Scratch , Chipping None
Defect No edge cracks, scratches, saw marks, stains
Packaging Qty/Wafer box 25pcs per box 
CQT dedicated to produce series glass wafers, fused silica wafers, SAW grade lithium tantalate wafers, optical grade lithium tantalate wafers, SAW grade lithium niobate wafers, optical grade lithium niobate wafers. CQT is a leading Chinese manufacturer who involves in piezoelectric crystals, surface acoustic wave filters and the single crystal growth.