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Lithium Niobate - Properties
LiNbO3

Lithium Niobate Forms
LiNbO3 Wafer
LiNbO3 Boule
LiNbO3 Short rod
LiNbO3 Long Boule
LiNbO3 Long Rod
LiNbO3 Polished Wafer
LiNbO3 FG Wafer
LiNbO3 Cassette
LiNbO3 Package
LiNbO3 Short Boule
LiNbO3 Large Boule
LiNbO3 Polished Blank

 

Wafer Specifications

Fundamental Properties

Item    
Melting Point  
1253° C
Crystal System  
Trigonal
Point Group  
3m
Crystal Density  
4.647 x 103 kg / m3
Curie Temperature (Tc)  
1133 ± 3°C

Heat Capacity (Cp)

  
89 J / k.mol
Dielectric Constants
(T11)
85.2
 
(T33)
28.7
Elastic Constants
(CE11)
2.03 x 1011 N / m2
 
(CE12)
0.573
 
(CE13)
0.752
 
(CE14)
0.085
 
(CE33)
2.424
 
(CE44)
0.595
Piezoelectric Strain Constants
(e15)
3.7 C / m2
 
(e22)
2.5
 
(e31)
0.23
 
(e33)
1.33

Typical Acoustic Properties

Surface Acoustic Wave Properties

Description Propagation Design Surface Wave Velocity (m/s) Coupling Coefficient k2 (%) Group Delay Time Temp Coefficient (ppm/°C) Propagation Loss of SAW (dB/cm)
127.86° Y - Cut X - Axis SAW 3980 5.5 75
-
64° Y - Cut X - Axis
L, SAW
4742 11.3 70
-
41° Y - Cut X - Axis L, SAW 4792 17.2 50
-
Y - Cut Z - Axis SAW 3488 4.9 94
0.31 (1GHz)
SAW = Surface Acoustic Wave        L, SAW =Leaky SAW

Selective Piezoelectric Coupling Factors & Frequency Constants

Plate Orientation
Wave Type
Coupling Factor

Resonance Frequency Constant (MHz-mm)
X
S
0.68
1.838
Z
E
0.17
3.615
36° Y - Cut
QE
0.49
3.300
163° Y - Cut
QS
0.62
1.866
E = extensional    S = shear    QE = quasi - extensional    QS = quasi - shear

Typical Optical Properties

Electro-Optic Coefficients r(10-12 mV-1) at 632.8 nm

rT13

10
rS13
11
rT22
6.8
rS22

3.4
rT33
32.2
rS33
36.7
rT51
32
rS51
18.2

Nonlinear Optical Coefficients at 1-06 μ m (*d31=d15)

d22 / l d36KDP l
6.5
d31 / l d36KDP l
-12.3
d33 / l d36KDP l
-86

Refractive Index at 632.8 nm

no
2.2880
ne

2.2030
no: TE mode    ne: TM mode

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