Essential details
MOQ:10
Shipping:Air freight, Land transport, Sea freight
Product Code:CRY-06
Product Introduction
Product name: Lithium Tantalate (LiTaO3) Crystal
Lithium tantalate is a colourless to pale yellow ferroelectric crystal with strong electro-optic, piezoelectric, pyroelectric and nonlinear optical behaviour. In practice it is the material behind most surface acoustic wave filters and pyroelectric detectors in volume production.
Key properties:
The crystal belongs to the trigonal system with an ilmenite-type structure. Dielectric loss is low, the detection rate is high, and the Curie temperature is high, which is what makes it suitable for high-frequency electronic communication such as pyroelectric infrared detectors and SAW devices. The electro-optic coefficient r33 reaches about 30 pm/V, and in waveguide modulators the modulation voltage is a fraction of what a KDP crystal needs. Periodically poled crystals give 3-5 µm mid-infrared output, and magnesium-doped material has produced 3.58 W of continuous laser power.
The crystal belongs to the trigonal system with an ilmenite-type structure. Dielectric loss is low, the detection rate is high, and the Curie temperature is high, which is what makes it suitable for high-frequency electronic communication such as pyroelectric infrared detectors and SAW devices. The electro-optic coefficient r33 reaches about 30 pm/V, and in waveguide modulators the modulation voltage is a fraction of what a KDP crystal needs. Periodically poled crystals give 3-5 µm mid-infrared output, and magnesium-doped material has produced 3.58 W of continuous laser power.
Typical use:
resonators and filters for SAW devices; electro-optic waveguide modulators; Q-switches; pyroelectric detectors for medical ultrasound and environmental monitoring; periodically poled mid-infrared sources.
Fabrication and options:
Two standard product forms. LTB crystal rods, X, Y or Z ±1°, in Ø2"×50 mm and Ø3"×50 mm. LTW epitaxial polishing wafers, double side polished to Ra < 10 Å, X, Y, Z or Y-rotated with or without a locating flat, in 10×10×0.5 mm, Ø2"×0.5 mm, Ø3"×0.5 mm and Ø3"×1.0 mm. Other sizes and periodically poled wafers on request. Packed in a Class 100 clean bag inside a Class 1000 clean room.
Two standard product forms. LTB crystal rods, X, Y or Z ±1°, in Ø2"×50 mm and Ø3"×50 mm. LTW epitaxial polishing wafers, double side polished to Ra < 10 Å, X, Y, Z or Y-rotated with or without a locating flat, in 10×10×0.5 mm, Ø2"×0.5 mm, Ø3"×0.5 mm and Ø3"×1.0 mm. Other sizes and periodically poled wafers on request. Packed in a Class 100 clean bag inside a Class 1000 clean room.
Ordering:
Minimum order 10 pcs. Tell us whether the wafer is for SAW, electro-optic or pyroelectric use, because the cut and the polish differ between them.
Minimum order 10 pcs. Tell us whether the wafer is for SAW, electro-optic or pyroelectric use, because the cut and the polish differ between them.
Product Parameter：
Material | Lithium tantalate, LiTaO3 single crystal
Purity | above 99.995%
Crystal structure | Trigonal, point group 3m, space group R3c
Lattice constant | a = 5.154 Å, c = 13.783 Å
Melting point | 1650 °C
Curie temperature | 665 ± 5 °C
Density | 7.45 g/cm3
Mohs hardness | 5.5-6
Colour | Colourless or pale yellow
Refractive index | no = 2.176, ne = 2.180 at 633 nm
Primary electro-optic coefficient | r12 = 7.0 × 10-12 m/V
Electromechanical coupling | k15 ≥ 0.3
Resistivity | 10^15 Ω·m
Spontaneous polarisation | 50 × 10-6 C/cm2
Pyroelectric coefficient | 2.3 × 10-7 C/cm2·K
Dielectric constant | εs11/ε0 39-43, εs33/ε0 42-43; εt11/ε0 51-54, εt33/ε0 43-46
Thermal expansion | aa = 1.61 × 10-6 /K, ac = 4.1 × 10-6 /K
Product form LTB | Crystal rod, X, Y, Z ±1°, Ø2"×50 mm and Ø3"×50 mm
Product form LTW | Epitaxial polishing wafer, double side polished Ra < 10 Å, X, Y, Z or Y-rotated with or without locating flat, 10×10×0.5 mm, Ø2"×0.5 mm, Ø3"×0.5 mm, Ø3"×1.0 mm
Packing | Class 100 clean bag, Class 1000 clean room
Minimum order | 10 pcs
Purity | above 99.995%
Crystal structure | Trigonal, point group 3m, space group R3c
Lattice constant | a = 5.154 Å, c = 13.783 Å
Melting point | 1650 °C
Curie temperature | 665 ± 5 °C
Density | 7.45 g/cm3
Mohs hardness | 5.5-6
Colour | Colourless or pale yellow
Refractive index | no = 2.176, ne = 2.180 at 633 nm
Primary electro-optic coefficient | r12 = 7.0 × 10-12 m/V
Electromechanical coupling | k15 ≥ 0.3
Resistivity | 10^15 Ω·m
Spontaneous polarisation | 50 × 10-6 C/cm2
Pyroelectric coefficient | 2.3 × 10-7 C/cm2·K
Dielectric constant | εs11/ε0 39-43, εs33/ε0 42-43; εt11/ε0 51-54, εt33/ε0 43-46
Thermal expansion | aa = 1.61 × 10-6 /K, ac = 4.1 × 10-6 /K
Product form LTB | Crystal rod, X, Y, Z ±1°, Ø2"×50 mm and Ø3"×50 mm
Product form LTW | Epitaxial polishing wafer, double side polished Ra < 10 Å, X, Y, Z or Y-rotated with or without locating flat, 10×10×0.5 mm, Ø2"×0.5 mm, Ø3"×0.5 mm, Ø3"×1.0 mm
Packing | Class 100 clean bag, Class 1000 clean room
Minimum order | 10 pcs
