LiTaO3,LiNbO3,KTP, YVO4, YAG,TeO2, GGG,TGG, BBO,LBO, YLF,GdVO4,KGW
what's LiTaO3(LT) crystal wafer? where's lithium tantalate single crystal & LiTaO3 thin wafer? how to buy optical substrate LiTaO3(LT) or SAW LiTaO3?

DFNano® supplier of optical substrate LiTaO3 or SAW LiTaO3 wafers,discs; manufacturer of lithium tantalate single crystal & LiTaO3(LT) thin wafer in china.

what is lithium tantalate LiTaO3(LT)?

Lithium tantalite (LiTaO3) is similar to lithium niobate. both are grown by the Czochralski method which yields large, high quality single crystals. Lithium tantalate possesses unique electro-optical, pyroelectric and piezoelectric properties combined with good mechanical and chemical stability and wide transparency range and high optical damage threshold, which makes LiTaO3 attractive for numerous applications including electro-optical modulators, pyroelectric detectors, piezoelectric transducers and sensors, optical waveguide and SAW substrates, piezoelectric transducers etc. It has good mechanical and chemical stability, a wide transparency range and a high optical damage threshold.

properties of lithium tantalate LiTaO3(LT) crystal rods

lithium tantalate LiTaO3(LT) crystal rods
Axial Y36°,Y38.7°,Y42°, Y, X, Z
Diameter φ3",φ4", φ5".
Directional surface: +/-18
Reference surface: +/-12
Polarization single domain
Package 100 grade clean bag, 1000 grade exactly clean bag
Total lithium tantalate LiTaO3(LT) crystal rods

SAW(surface acoustic wave) grade lithium tantalate LiTaO3(LT) crystal wafer

SAW(surface acoustic wave) grade LiTaO3(LT) wafer
Growth direction: All of LiTaO3(LT) crystal to +/-18
Diameter φ3",φ4", φ5".
Thickness 0.35 mm-0.37mm
width of reference surface: According to users
Smoothness angle: <10μm
Curvature angle: <10μm
Back According to users
Surface Mirror polishing
chamfer all
Package 100 grade clean bag, 1000 grade exactly clean bag
Total SAW(surface acoustic wave) grade LiTaO3(LT) crystal wafer

material properties of lithium tantalate LiTaO3(LT) crystal wafer

lithium tantalate LiTaO3(LT) crystal wafer
Material purity >99.995%
Crystal symmetry Trigonal, 3m
Lattice constant, A a-5.154; c = 13.783
Density, g/cm3 7.45
Melting point ,°C 1650
Curie point, °C 610
Mohs hardness 5.5-6
Solubility Insoluble in water
Color Colorless or light yellow
Thermal expansion coefficient, 10-6/ k aa=16 ac=4.1
Specific heat, cal/g°C 0.06
Thermal conductivity , mW/cm °C 46
Dielectric Constant(@100KHz) ea=54 ec-43
Transparency range, mm 0.4-5.0
Refractive indices@633nm no = 2.175ne = 2.180
Electro-optic coefficients, pm/V @633 nm, high frequency r33 = 33, r13 = 8, r22 = 20
Nonlinear optical coefficients p/m/V @ 1064 nm d22 = 2.0, d31 = - 1, d33 = -21
Pyroelectric Coefficient: -2.3 10-4 C/°C/m2
Optical homogeneity ~10-5
Absorption loss @ 1064 nm < 0.15 %/cm
Total 20 lithium tantalate LiTaO3(LT)

Optical grade lithium tantalate LiTaO3(LT) wafer

lithium tantalate LiTaO3(LT) crystal rods
Orientation X-cut Z-cut
Diameter 76.2mm+/-0.3mm; 100.0mm+/-0.3mm 76.2mm+/-0.3mm; 100.0mm+/-0.3mm
Orientation Flat 22mm+/-2mm; Perpendicular to X+/-0.2° 22mm+/-2mm; Perpendicular to X+/-0.2°
Thickness 0.4-1mm 0.4-1mm
Surface roughness Double sides polished S/D 20/10 Double sides polished S/D 20/10
Package 100 grade clean bag, 1000 grade exactly clean bag
Total 6 Optical grade lithium tantalate LiTaO3(LT) wafer
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