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·Optical Materials for The Fiber Optics and Telecommunication Industries |
Lithium Niobate Single
crystals
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 |
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| 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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