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Basic Info

Model NO.	Finewin
Size	Customized
Shape	Customized
Surface	Single Side Polished or Double Side Polished
Samples	Yes
Transport Package	25PCS Packaging or Individual Packaging
Specification	costomized
Trademark	FineWin
Origin	Henan China
Production Capacity	60000 PCS/Month

Product Description

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

Innovation point: Through the crystal growth machine's modification in rotating and lifting system, the stability of crystal growth interface and growth rate become higher. Also the defects caused by the influence of crystal rotating and rising disturbance on the solid-liquid interface during the crystal growth process are reduced. we create simulation of crystal growth system and can design crystal shape. The computer chip control the changing of crystal shape according to crystal growth status, through the processing of precision sensor signals. The ultra low gradient interface growth temperature field we self-designed make the quality of optical crystals much better.
Optical grade lithium tantalate crystals and wafers

Lithium tantalate optical film
Various lithium tantalate LT shaped blocks
Detailed Photos

SAW Level LT ingot

Optical LT wafers

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