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:- Transparent Range: 0.4 - 5.0 μm; E-O Coefficient: r33=30.4;
- 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: - Diameter: f40mm ~ 102mm
- Length: 50mm ~ 150mm
- Orientation: X, Z, 36°Y, 42°Y, 128°Y
- Polish: 0.016mm
Wafers: - Diameter: f40mm ~ 102mm
- Length: 0.2~1.2mm
- Orientation: X, Z, 36°Y, 42°Y, 128°Ys
- Flatness:
<10mm for f40 ~ 65mm <15mm for f65 ~ 102mm - 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 | |
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