Semiconductor LN Crystals by CZ Czochralski method For Optical application
Description
Lithium niobate crystals have excellent electro-optic, acoustooptic, piezoelectric and nonlinear properties. Lithium niobate crystal is an important multifunctional crystal with good nonlinear optical properties and large nonlinear optical coefficient. Moreover, non-critical phase matching can be realized. As an electro-optical crystal, it has been used as an important optical waveguide material. As a piezoelectric crystal, it can be used in the production of low frequency SAW filters, high power high temperature resistant ultrasonic transducers and so on. Doped lithium niobate materials are also widely used. Mg:LN can greatly improve the anti-laser damage threshold, and promote the application of lithium niobate crystals in the field of nonlinear optics. Nd:Mg:LN crystal, can achieve self-doubling effect; Fe:LN crystals can be used for holographic storage in optical volumes.
Application
Lithium niobate crystal is one of the most widely used new inorganic materials, it is a good piezoelectric energy exchange material, ferroelectric material, electro-optical material, lithium niobate as electro-optical material in optical communication to play the role of light modulation. Its single crystals are important materials for optical waveguides, mobile phones, piezoelectric sensors, optical modulators and a variety of other linear and nonlinear optical applications.
Production method
Lithium niobate was prepared using lithium carbonate and niobium pentoxide as raw materials by pulling method: lithium carbonate and niobium pentoxide were put into a platinum crucible and crystals were grown along the direction (001). In order to obtain high quality colorless transparent cylinder, it is necessary to add an appropriate size of electric field when the temperature of the two end faces in the two directions of crystal growth is slightly higher than the Curie temperature, and then form the crystal to cool the crystal to room temperature, that is, to prepare lithium niobate crystal.
Specification
| 晶格常数lattice constant | a=5.148Å, c=13.863Å |
| 密度density | 4.64g/cm3 |
| 熔点melting point | 1250℃ |
| 居里温度the Curie temperature | 1142±3℃ |
| 硬度Hardness | 5 |
| 介电常数dielectric constant | ε11/ε0=85; ε33/ε0=29.5 |
| 电阻系数electrical resistivity | 38W/m/℃ at 25℃ |
| 热膨胀系数coefficient of thermal expansion | a1=a2=2×10-6/℃, a3=2.2×10-6/℃ at 25℃ |
| 压电常数piezoelectric constant | d22=2.04×10-11C/N, d33=19.22×10-11C/N |
| 折射率refractive index | no=2.2827 ± 0.0003 ne=2.1928± 0.0003 |
| 电光系数lithium niobate electroptic coeffcient | r33 30.4pm/V |
Product display
FAQ
Q. Do you have any stock of wafer or ingots?
yes,aslike 3inch,4inch commen size substrates wafers are in stocks.
Q. Where is your company located?
Our company located in shanghai,China. factory is in wuxi city.
Q. How long will take to get the products?
Generally it will take 1~4 weeks to process and then delivery.
It is depend on the quantity and the size of the products.
Q: How about pay term ＆ delivery ?
T/T 50％deposit and left part before delivery by FOB .
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Semiconductor LN Crystals by CZ Czochralski method For Optical application Images
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