LiNbO3
Lithium niobate(LiNbO3) crystals have excellent properties such as electro-optic, acousto-optic, piezoelectric, and nonlinear. Lithium niobate crystal is an important multifunctional crystal with excellent nonlinear optical properties and a high nonlinear optical coefficient; And it can achieve non critical phase matching. As an electro-optic crystal, it has become an important optical waveguide material; As a piezoelectric crystal, it can be applied to the production of medium to low frequency SAW filters, high-power high-temperature resistant ultrasonic transducers, and so on.
Basic properties
| The crystal structure | Trigonal, point group 3m |
| Lattice Parameters | a=5.148Å, c=13.863Å |
| Melting point | 1250℃ |
| Curie Temperature | 1140℃ |
| Density | 4.64g/cm3 |
| Mohs hardness | 5.0 |
| Refractive index | ne=2.203, no=2.286 @632.8nm |
| Electro-Optic Coefficients | r33=30.4pm/V |
| Dielectric Constants | ε11/ε0=85;ε33/ε0=29.5 |
| Thermal Conductivity | 38W/m/℃ @ 25℃ |
| Thermal Expansion Coefficients (at 25℃) | a1=a2=2×10-6/℃, a3=2.2×10-6/℃ |
| Piezoelectric Strain Constant | d22=2.04×10-11C/N, d33=19.22×10-11C/N |
Specification
| Size | Custom |
| Dimensioin tolerance | Z axis: ±0.3mm X,Y axis: ±0.1mm |
| Flatness | <lambda/8@632.8nm |
| Parallelism | ≤10’ |
| Surface quality | 10/5 |
| Wavefront distortion | ≤λ/4@632.8nm |
| Angle tolerance | ±0.5o |
| Coating | ≤ 0.2%@1064nm or Custom |
*We can provide blanks or chips with the required size and specifications
