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Lithium Niobate Single crystals
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Molecule of formula

LiNbO 3

Weight of molecule

147.85

Typical ingot size

¦µ 40¡Á200 / ¦µ 76¡Á100 / ¦µ 100¡Á80

Typical orientation

Z, X, Y, 45 0 Z , 128 0 Y, 64 0 Y, 41 0 Y,

Products

Surface Acoustic Wave(SAW) grade ingot, Optical grade ingot,

Adopted LN (Fe, MgO, ZnO etc) and selected orientation ingots



Lithium Niobate properties

Point group

3m

Density

4.64g/cm3

Llattice parameter

a: 0.5148nm
c: 1.3863nm

Hardness (mohs)

5 -- 5.5

Melting point

1260 ¡æ

Curie point

1142¡À1 ¡æ

Solubility:

Insoluble in H 2 O

Heat Capacity (Cp)

89 J / k.mol

Thermal Conductivity

38 W /m /K @ 25 o C

Relative Dielectric Constants

¦Î T 11 / ¦Î 0 : 84.6
¦Î T 33 / ¦Î 0 : 28.6

Elastic Constants

C E 11 : 2.030 ¡Á 10 11 N / m 2
C E 12 : 0.573 ¡Á 10 11 N / m 2
C E 13 : 0.752 ¡Á 10 11 N / m 2
C E 14 : 0.085 ¡Á 10 11 N / m 2
C E 33 : 2.424 ¡Á 10 11 N / m 2
C E 44 : 0.595 ¡Á 10 11 N / m 2

Dielectric Constants

T 11 : 85.2
T 33 : 28.7

Piezoelectric strain constants

d 15 : 7.40¡Á 10 - 11 C/N
d 22 : 2.08¡Á 10 - 11 C/N
d 31 : -0.086¡Á 10 - 11 C/N
d 33 : 19.22¡Á 10 - 11 C/N


Lithium Niobate Optical properties

Transparency range

370 ¡« 5200nm

Refractive index

n e = 2.146, n o = 2.220 @ 1300 nm
n e = 2.156, n o = 2.232 @ 1064 nm
n e = 2.203, n o = 2.286 @ 632.8nm

Gradient of refractive index
@ 633nm

¡Ü5¡Á10 -5 /cm

Transmissivity @ 633nm

¡Ý68%

Electro-Optic Coefficients
@ 633nm

¦Ã T 33 = 32.2 pm/V, ¦Ã S 33 = 36.7 pm/V,
¦Ã T 13 = 10 pm/V, ¦Ã S 13 = 11 pm/V,
¦Ã T 22 = 6.8 pm/V, ¦Ã S 22 = 3.4 pm/V,
¦Ã T 51 = 32 pm/V, ¦Ã S 51 = 18.2 pm/V,

Nonlinear Optical Coefficients @ 1064nm (*d 31 =d 15 )

d 22 / l d 36 KDP l: 6.5
d 31 / l d 36 KDP l: -12.3
d 33 / l d 36 KDP l: -86

Application

Piezoelectric transducer , Surface Acoustic Wave devices, Bulk Acoustic Wave devices, Optical wave guide devices, Electro-optical devices, Acoustic optical devices, Holographic memory, Piezoelectric sensor

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