LiNbo 3
Lithium niobate crystals are often abbreviated LN or LNB. They have a melting point of approximately 1253℃, are negative uniaxial crystals in the trigonal system, and transmit over 0.4-5μm. Lithium niobate combines piezoelectric, electro-optic, nonlinear, photoelectric, photorefractive, birefringent, pyroelectric, and laser-active effects. Optical-waveguide substrates, electro-optic Q-switches, surface acoustic wave devices, birefringent wedges, and superlattice structures made from these crystals are widely used in waveguide modulators, laser gyroscopes, Q-switched lasers, interdigital filters, optical isolators, optical circulators, and optical parametric oscillators. These devices are important in optical communications, aerospace, military industries, electronics, and scientific research.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Crystal Structure | Rhombohedral, space group R3c |
| Unit Cell Parameters | a=0.515, c=13.863, Z=6 |
| Curie Point | about 1140 |
| Mohs Hardness | 5 |
| Transmission Band | 420-5200nm |
| Refractive Index [1064nm] | ne=2.156, no=2.322 @1064nm |
| Nonlinear Optical Coefficient | d33=34.4 pm/V; d31=d15=5.95 pm/V; d22=3.07 pm/V |
| Optical Homogeneity | Delta n<5×10-5/cm |
| Clear Aperture Dimension | >90% |
| Flatness [632.8nm] | ≤λ/8@632.8nm |
Datasheet
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