LiTaO3 crystal is also widely used E-O crystal, due to its optical, NLO and E-O poperties similar to those of LiNbO3 crystal, but with higher damage threshold (> 500 MW/cm2 for ns pulsed). Main properties include:
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Transparent Range: 0.4 - 5.0 μm; E-O Coefficient: r33=30.4;
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Refractive Indices: no=2.176, ne=2.180 @ 633 nm.
Maximum LiTaO3 SAW wafer size we can offer is 6 inch in diameter.
Red Optronics provide LiTaO3 in as-cut boules, wafers or slices. Our production capabilities include:
Boules:
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Diameter:
f40mm ~ 102mm
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Length: 50mm ~ 150mm
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Orientation: X, Z, 36�Y, 42�Y, 128�Y
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Polish: 0.016mm
Wafers:
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Diameter: f40mm ~
102mm
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Length: 0.2~1.2mm
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Orientation: X, Z, 36�Y, 42�Y, 128�Ys
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Flatness:
<10mm for f40 ~ 65mm
<15mm for f65 ~ 102mm
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Bow:
<20mm for f40~ 65 mm,
<40mm for f65 ~102mm
Slices:
Size: 100x45x1.5mm ~ 120x40x2mm
Boule
Specifications
|
|
|
Typical Diameter |
φ3"�2mm |
φ4"�2mm |
Typical
Length |
≤120mm |
≤100mm |
Typical Orientation |
36�Y,42�Y, |
|
Wafer
Specifications
|
|
Diameter |
φ3"�2mm,φ4"�2mm |
Thickness |
0.3~1mm |
Orientation |
36�Y,42�Y |
Reference Flat
Orientation |
X |
Ref.Flat Width |
22�2 |
Front Side Polishing |
0.25~0.016μm |
Back Side Lapping |
10~15μm |
Flatness (μm) |
≤20 |
Bow (μm) |
≤30 |
|
Notes: To inquire or
order LiTaO3 crystals, please provide specifications
as detailed in above.
Physical and
Optical Properties
|
|
Crystal Structure: |
Trigonal, space group R3c,Point group 3m |
Cell Parameters: |
a=5.154A,c=13.781A |
Melting point: |
1650�C |
Curie Temperature: |
607�C |
Mohs hardness: |
5.5 |
Density: |
7.46 g/cm3 |
Dielectric Constant: |
ξ11/ξ0 51.7
ξ33/ξ0 44.5 |
Elastic Stiffness Coefficient: |
CE11 2.33(X
1011 N/m2)
CE33 2.77(X 1011 N/m2) |
Piezoelectric Strain Constant: |
d22 2.4(X 10-11 C/N)
d33 0.8(X 10-11 C/N) |
Transmission range: |
400-4500nm |
Electro-optical coefficients: |
r33 30.4pm/V |
Refractive index at 632.8nm: |
no=2.176, ne=2.180
Aperture |
|
SAW Properties
|
Cut Type |
νs(m/s) |
κ2s(%) |
TCV(10-6/�C) |
TCD(10-6/�C) |
X-112�Y |
3295 |
0.75 |
-16.50 |
22.3 |
Y-Z |
3230 |
0.66 |
|
35 |
|
|