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Basic Info

Model NO.	FW-CRYSTAL
Transport Package	Individual Packaging Or25PCS Packaging
Specification	2-7 inch
Trademark	FineWin
Origin	China
Production Capacity	25, 000PCS/Month

Product Description

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