LiTaO3(LT) optical crystals, a kind of transparent crystal, with many kinds of effects like piezoelectricity, electro-optics, acousto-optics, non-linear optics, are excellent materials for acoustic transmission medium and high frequency transducers. LT crystals can be widely used in electro-optical devices, laser frequency multiplier and acousto-optic devices.
Application: surface acoustic wave filter, resonator, Q-switch, optical modulator, acoustooptic switch, laser frequency doubling, optical parametric oscillator, optical storage, high temperature and high frequency ultrasonic detector, infrared detector and optical pickup device.
| Product Name: |
Lithium tantalate (LiTaO3) crystal substrate |
| Product Description: |
Lithium tantalate (LiTaO3) single crystal has a very good electro-optical, piezoelectric and pyroelectric properties, widely used in pyroelectric devices and color television. Branch crystal company specializes in producing high quality and the most competitive price high purity optical grade LiTaO3 crystal substrate |
| Technical parameters: |
| Crystal structure |
Hexagonal |
| Lattice constant |
a = 5.154 Å c = 13.783 Å |
| Mp |
1650 o C |
| Density |
7.45 g / cm3 |
| Curie temperature |
610 o C |
| Hardness |
5.5 - 6 Mohs |
| Thermal expansion coefficient |
aa = 1.61 x 10 -6 / k ac = 4.1 x 10 -6 / k |
| Resistivity |
1015 Wm |
| Permittivity |
es11 / e0: 39 ~ 43 es33 / e0: 42 ~ 43 et11 / e0: 51 ~ 54 et11 / e0: 43 ~ 46 |
| Color |
Colorless |
| Through a range of |
0.4 ~ 5.0 um |
| Index of refraction |
n o = 2.176 n e = 2.180 @ 633 nm |
|
|
Specifications: |
| Name |
Optical-grade LiTaO3 |
Sound table level LiTaO3 |
| Axial |
Z cut + / - 0.2 ° |
36 ° Y cut / 42 ° Y cut / X cut
(+ / - 0.2 °) |
| Diameter |
76.2mm + / - 0.3mm |
76.2mm + /-0.3mm
100mm + /-0.3mm |
| Datum plane |
22mm + / - 2mm |
22mm + /-2mm
32mm + /-2mm |
| Thickness |
500um + /-5mm
1000um + /-5mm |
500um + /-20mm
350um + /-20mm |
| TTV |
≤ 10um |
≤ 10um |
| Curie temperature |
605 °C + / - 0.7 °C (DTAmethod) |
605 °C + / -3 °C (DTAmethod |
| Surface quality |
Double-sided polishing |
Double-sided polishing |
| Chamfered edges |
edge rounding |
edge rounding |
|
| Standard Packaging: |
1000 clean room, 100 clean bag or single box packaging |
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
Photos:
SAW Level LT ingot
Optical LT wafers
Packing
Audited Supplier 
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