LiNbO3 Crystal for Isolator, Circulator
LiNbO3 (Lithium niobate) is a crystal that combines low cost, excellent mechanical and physical properties, and high optical homogeneity.
Therefore, LiNbO3 wedges are widely used in fiber isolators and circulators.
This crystal plays an important role in fields such as optical communication, wireless communication, sensor technology, and optical devices.
LiNbO3LiNbO3 has high transparency and birefringence, making it suitable for optical applications.
In addition, it is also used as an oscillator and modulator by exploiting the piezoelectric effect.
LiNbO3 Q-Switch Specifications
- 50,000 to 100,000 pcs/month of LiNbO3 wedges used for fiber optical isolators and circulators
- Reliable Delivery
- Strict Quality Control
- Technical Support
- Very Competitive Price
Typical SAW Properties
| Crystal Structure | Trigonal, Space group R3c, Point group 3 m |
|---|---|
| Melting Point | 1253 ℃ |
| Mohs Hardness | 5 |
| Density | 4.64 g/cm3 |
| Deliquescence | None |
| Optical Homogeneity | ～5 × 10-5/cm |
| Transparency Range | 420 nm - 5200 nm |
| Absorption Coefficient | ～0.1 %/cm @1064 nm |
| Refractive indices at 1064 nm |
ne = 2.146, no = 2.220 @ 1300 nm ne = 2.156, no = 2.232 @ 1064 nm ne = 2,203, no = 2.286 @ 632.8 nm |
| Thermal Expansion Coefficients (at 25℃) |
//a, 2.0 × 10-6/K //c, 2.2 × 10-6/K |
| Thermal Conductivity Coefficient | 38 W/m/K at 25 ℃ |
| Thermal Optical Coefficient |
dno / dT = -0.874 × 10-6/K at 1.4 µm dne / dT = 39.073 × 10-6/K at 1.4 µm |
| The Sellmeier equations (λ in µm) |
no2 = 4.9048 + 0.11768 / (λ2 - 0.04750) - 0.027169 λ2 ne2 = 4.5820 + 0.099169 / (λ2 - 0.04443) - 0.02195 λ2 |
Specifications of LiNbO3 Wedges
| Aperture | 1.0 × 1.0 mm2 to 4 × 4 mm2 |
|---|---|
| Dimension Tolerance | ±0.05 mm |
| Wedge Angle Tolerance | ±0.1° |
| Optical Axis Orientation | ±0.5° |
| Flatness | λ/4 @ 632.8 nm |
| Surface Quality | 20-10 |
| AR-Coating | R < 0.2% @1550 nm ±40 nm |
| Standard Size | 1.25 mm × 1.25 mm × 0.5 mm with 13° or 15° wedge, phi=22.5° |