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

       

Thickness

mm

       

Primary reference flat

mm

 

Semi-notch

Semi-notch

Semi-notch

LTV (5mmx5mm)

µm

< 0.5

< 0.5

< 0.5

< 0.5

TTV

µm

< 3

<3

<5

<5

Bow

µm

±30

±40

±40

±40

Warp

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

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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