CR AU Coating Lithium Tantalate LiTaO3 Crystal Piezoelectric Effect
Precision Pyroelectricity: LiTaO3's Impact in Motion Sensors
Witness the impact of LiTaO3's pyroelectric effect in the realm of motion sensors, where precision matters most. Our ultra-thin LiTaO3 wafers, at a wafer-level thickness of 20um and diameters reaching 4 inches, play a transformative role in enhancing the accuracy of motion-sensing applications. The inherent pyroelectric effect responds dynamically to temperature changes, allowing for meticulous detection in security systems and automation technologies. LiTaO3's thinness is not just a feature; it's the key to unlocking unparalleled precision in motion sensor applications.
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Material |
Ltihium Tantalate (LT) Wafer |
||
|
Diameter |
3inch |
4inch |
6inch |
|
76.2mm |
100mm |
150mm |
|
|
S/D |
20/10 |
20/10 |
20/10 |
|
TTV |
<3um |
<3um |
<5um |
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PLTV |
>95% |
>95% |
>95% |
|
Warp |
<20um |
<40um |
<50um |
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BOW |
<20um |
<30um |
<30um |
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Roughness |
Ra<0.5nm |
Ra<0.5nm |
Ra<0.5nm |
|
Reduction |
Standard White |
Standard White |
Standard White |
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Doping |
Fe doped |
Fe doped |
Fe doped |
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Properties |
LiTaO3 (LT) |
|
Crystal Structure |
Trigonal,a = 5.154, c = 13.784Å |
|
Melting Point |
1650℃ |
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Curie Temperature |
607℃ |
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Transmission Range |
400 – 5000 nm |
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Absorption edge |
270nm |
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Absorption loss |
< 0.15 %/cm @ 1064 nm |
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Refractive Index |
no=2.176,ne=2.180(at 0.633 µm) |
|
no=2.131,ne=2.134(at 1.2 µm) |
|
|
Density |
7.45g/cm3 |
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Thermal Conductivity |
8.78x 10-7 m2/sec |
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Optical homogeneity |
~10-5 |
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Hardness (Mohs) |
5 |
|
Elastic Coefficient |
CE11 2.33(X 1011 N/m2) |
|
CE33 2.77(X 1011 N/m2) |
|
|
Dielectric Constant |
ε11/ε0 52.7 |
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ε33/ε0 44.5 |
|
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Solubility in Water |
insoluble in water |
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NLO Coefficients |
d33 = 13.8 pm/V |
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d22= 2.4 pm/V |
|
|
d11= 0.85 pm/V |
|
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Electro-Optic Coefficients |
r31 =8.4 pm/V, @633nm |
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r22 =20 pm/V, @633nm |
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r33 =30.5 pm/V, @633nm |
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|
Damage Threshold |
2 MW/cm2@532nm |
Acceptance Check
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