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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Part No.	Description	Application	Material	Wavelength	Bandwidth	Size	Aperture	Thickness	Length	Angle	Doping	Orientation	Displacement	Retardation	Delay	Coating	End cut	Holder	Price	Availability	Add to Cart

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

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 ~ 76.2 mm

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