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LiNbO3 is widely used as electro-optic modulators and Q-switches for Nd:YAG, Nd:YLF and Ti:Sapphire lasers as well as modulators for fiber optics.
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Fuzhou, ChinaLead Time:
3-4weeks
Lithium niobate (LiNbO3, LN) is a multi-purpose material in photonics and optoelectronics fields. As a highly versatile lithium niobate crystal (often referred to as an LN crystal), it features excellent nonlinear, electro-optic, and piezoelectric properties. This high-purity LiNbO3 single crystal is widely used as electro-optic modulators and Q-switches for Nd:YAG, Nd:YLF, and Ti:Sapphire lasers, as well as modulators for fiber optics. The unique LiNbO3 crystal structure allows it to perform exceptionally well in various complex optical systems.
| NLO Coefficients | d33 = 34.4 pm/V d31 = d15 = 5.95 pm/V d22 = 3.07 pm/V |
| Effective NLO coefficients | deff = 5.7 pm/V for frequency doubling 1300 nm; deff = 5.3 pm/V for OPO pumped at 1064 nm; deff = 17.6 pm/V for quasi-phase-matched structure. |
| Electro-Optic Coefficients | γT33 = 32 pm/V, γs33 = 31 pm/V, γT31 = 10 pm/V, γs31 = 8.6 pm/V, γT22 = 6.8 pm/V, γs22 = 3.4 pm/V |
| Photorefractive Damage Threshold | 50 MW/cm2 (10 ns, 1064 nm) |
| Surface Damage Threshold | 300 MW/cm2 (10 ns, 1064 nm) |
| Chemical Formula | LiNbO3 (Lithium niobate LiNbO3) |
| Lattice Constant, Å | a = b = 5.148 Å, c = 13.863 Å |
| Melting Point | 1250°C |
| Density | 4.64 g/cm3 |
| Curie Temperature | ~ 1140°C |
| Mohs Hardness | 5 |
| Thermal Expansion | a11 = 15.4×10-6/K, a33 = 7.5×10-6/K |
| Thermal Conductivity, W/(m K) at 300 K | 5.6 |
| Refractive Indices | n0 = 2.286, ne = 2.203 @632.8nm |
| Nonlinear Optical Coefficients, pm/V at 1064 nm | d31 = -4.5, d33 = -0.27, d22 = 2.1 |
| Electro-Optical Coefficients, pm/V at 633nm | γT33 = 31, γs31 = 9, γs22 = 3.4 |
| Transmittance Range | 420 ~ 5200 nm (>68% @632.8nm) |
| The Sellmeier equations (λ: μm) | n02(λ) = 4.9048 + 0.11768/(λ2 - 0.04750) - 0.027169 × λ2 ne2(λ) = 4.5820 + 0.099169/(λ2 - 0.04443) - 0.021950 × λ2 |
| Tolerance of cutting angle | Δθ ≤ ±0.25°, Δφ ≤ ±0.25° |
| Tolerance of dimension | Dimension +0/-0.1 mm, L: ±0.1mm |
| Flatness | λ/10 @ 632.8nm |
| Wavefront distortion | λ/8 @ 632.8nm |
| Surface quality | 10/5 per MIL-O-13830A |
| Parallelism | 20″ |
| Perpendicularity | 5′ |
| Clear Aperture | > 90% |
| Chamfer | < 0.1 mm @ 45° |
| Size | Upon customer request (Custom LiNbO3 crystal sizes available) |
| Coating | AR/HR coating upon customer’s request |
| Electrodes | Gold/Chrome plated on X-faces |
| Damage Threshold | 750MW/cm2 at 1064nm, TEM00, 10ns, 10Hz |
| Quality Warranty Period | One year under proper use |
1. What is the difference between LiNbO3 and an LBO crystal?
While both are nonlinear optical materials, an LBO crystal (Lithium Triborate) is primarily used for high-power UV and visible light generation (like SHG/THG) due to its high damage threshold. A LiNbO3 crystal excels in electro-optic modulation, Q-switching, and optical parametric oscillators (OPO) because of its broad transparency and strong electro-optic coefficients.
2. How does the LiNbO3 crystal structure affect its performance?
The LiNbO3 crystal structure belongs to the trigonal crystal system. This unique asymmetric structure is the fundamental reason behind its strong piezoelectric, electro-optic, and nonlinear optical properties, making it indispensable for modern photonics.
3. What determines the lithium niobate price?
The lithium niobate price varies based on the dimensions, specific cut angles, doping requirements (e.g., 5% MgO doped), and custom coatings (AR/HR) or electrodes required for your specific application. Contact us for a precise quote.
HGO offers both pure Lithium niobate (LiNbO3, LN) and 5% MgO doped Lithium niobate crystals for Q-switches with transverse E-O modulation, second harmonic generation (SHG), sum frequency generation (SFG), different frequency generation (DFG), or optical parametric generation (OPA). High quality LiNbO3 single crystals with λ/10 wavefront distortion can be reliably supplied by HGO.
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