Series Glass & Fused Silica Wafers

Series Glass & Fused Silica Wafers
CQT uses a variety of glass and quartz depending on the application and material requirements. Our designers and engineers are skilled at working with any number of glass and quartz materials to machine and fabricate precision optical products such as fused quartz parts for optics, fused silica parts used in fiber optic applications, and borosilicate glass parts found in semi-conductor manufacturing.
Product Parameters
The general specs are as follows sheet, if your specified is not included with it, you may freely tell us and we’ll pleased to customize them for you.
Find here details of CQT selling lithium niobate wafer, lithium tantanlate wafer, piezo single crystal blanks and glass substrates for biochemistry.
spec unit 6" 8" 10" 12”
Diameter/size(or square) mm 150 200 250 300
Tolerance (¯) mm 0.2 0.2 0.2 0.2
Thickness mm 0.30 or more 0.40 or more 0.50 or more 0.50 or more
Primary reference flat mm 57.5 Semi-notch Semi-notch Semi-notch
LTV (5mmx5mm) ³´µm < 0.5 < 0.5 < 0.5 < 0.5
TTV ³´µm < 3 <3 <5 <5
Bow ³´µm ¯30 ¯40 ¯40 ¯40
Warp ³´µm ≤ 40 ≤ 50 ≤ 50 ≤ 50
PLTV(5mm*5mm)<0.4um % ≥95% ≥95% ≥95% ≥95%
Edge Rounding mm
Surface Type
Polished side Ra nm
Back Side Criteria ³´µm
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.

Process capability:

Item Capability
Diameter 5mm - 400mm
Thickness 50μm or  more
Dimensional Tolerance +/- 25μm
Thickness Tolerance +/- 5μm
Thickness Variation(TTV) < 2μm
Flatness 1/10 Wave/Inch
Surface Roughness (RMS) <5Ǻ
Scratch and Dig 10/5
Particle Size <10μm
Bow/Warp <10μm
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