LiNbO3 substrate

The main performance parameters

Growth method

Czochralski method

Crystal structure

Trigonal system

Lattice constant

a=b=5.148Å     c=13.863 Å 

Melting point

1250℃

Curie temperature

1142 ℃

Density

4.64 g/cm3

Mohs Hardness

5

Spectral transmission range

0.4-2.9um

Refractive index

No=2.286 ne=2.203 (632.8nm)

Nonlinear coefficient

D33=34.45, d31=d15=5.95, d22=13.07 (PMV^-1)

Electro-optic coefficient

γ13=8.6，γ22=3.4，γ33=30.8，γ51=28.0，γ22=6.00（pmv^-1） 

Spectral transmission range

370 - 5000nm  >68% (632.8nm)

Thermal expansion coefficient

A11=15.4 x 10^-6/k, a33=7.5 x 10^-6/k

Grade:

Optical grade LiNbO3

SAW grade LiNbO3

Orientation

X-cut, Z-cut （+/-0.2°）

Z-cut, Y-cut,

Y-cut 36° off, Y-cut 64° off, Y-cut 128° off

Primary Orientation Flat

Standard Size

φ3"(76.2mm) +/-0.3mm
φ4" (100mm) +/-0.3mm
φ6" (150mm) +/-0.3mm
10x10mm  +/-0.1mm
Or others

φ3" (76.2mm) +/-0.3mm
φ4" (100mm) +/-0.3mm
φ6" (150mm) +/-0.3mm
10x10mm  +/-0.1mm
Or others

Thickness

500μm +/-20μm
1000μm +/-20μm
350μm +/-20μm

Or Ultra thin wafer 20~60μm

500μm +/-20μm
1000μm +/-20μm
350μm +/-20μm

Or Ultra thin wafer 20~60μm

Polishing

 Single or Both side polished

 Surface Finish: 20/10 or 10/5

Single or Both side polished

Surface Finish: 20/10 or 10/5

TTV

≤10um

≤10um

Curie temperature

1142℃ +/-0.7℃

1142℃ +/-3℃

Edge chamfer

Edge rounding

Edge rounding