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LiNbO3 for AO

LiNbO3 for AO
LiNbO3 for AO

Lithium Niobate (LiNbO3) features,

High electro-mechanical coupling coefficients,
A wide transparency range,
Excellent chemical and mechanical stability.
 
Therefore it has been widely used for surface acoustic wave (SAW) devices, accoustic transducers, and integrated optic devices.  Newlight Photonics offers LN wafers wth the following parameters, 

Diameters: Φ1", Φ2", Φ3"
Thickness: 0.25 ~ 1.0 mm
Orientation: X, Y, Z, 127.86° Y, 64° Y, 135° Y

 

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Crystal symmetry: 3m
Density: 4.628 g/cm3
Optical spectral range: 0.4 - 5 μm

Elastic constants cij (1011 dyn/cm2 or 1010 Pa):
 

0.03 0.079 0.104 -0.071 0 0
0.079 0.03 0.104 0.071 0 0
0.172 0.172 0.078 0 0 0
-0.152 0.152 0 0.22 0 0
0 0 0 0 0.22 -0.152
0 0 0 0 -0.071 -0.025


Photoelastic constants pij:
 

0.03 0.079 0.104 -0.071 0 0
0.079 0.03 0.104 0.071 0 0
0.172 0.172 0.078 0 0 0
-0.152 0.152 0 0.22 0 0
0 0 0 0 0.22 -0.152
0 0 0 0 -0.071 -0.025


Sound velocity:
 

Direction Polarization v (105 cm/s)
[100] [100], L 6.549
[010] [010], L 6.838
[010] S 4.4667
[001] [001], L 7.331
[001] [100], S 3.5885
[010] [100], S 3.838
[001] [001], L 7.271
[100] [001], S 4.801
[100] [010], S 4.0593
[010] [010], QL 6.882
[010] [100], S 3.962
[010] [001], QS 4.494
[001] [001] L 7.333
[001] [001] L 7.22
[010] [010] L 6.58
[100] [100] L 6.57
[001] [010] S 3.57
[001] [100] S 3.57
[001] [001] L 7.331


Some more physical properties of LN crystal can be found at 

http://www.newlightphotonics.com/E-O-Crystals/LN-for-EO

under the "properties" tab.


Standard LiNbO3 SAW Wafers
 

Diameter: Φ40.0 mm, Φ50.8 mm, Φ76.2 mm , Φ101.6 mm
Thickness: 0.25 ~ 1.0 mm
Orientation: X, Y, Z, 127.86° Y, 64° Y, 135° Y
Front polish: 0.016 ~0.001 μm
Back lapping: 0.3 ~10 μm
Flatness: < 15 μm
Bow: < 20 μm for Φ40 ~ 65 mm,  < 40 μm for Φ65 ~101.6 mm

 

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