Crystals Materials
LiNbO3 & MgO:LiNbO3 Crystal for aerospace, medical, and industrial applications
Lithium niobate (LiNbO3 crystal) is widely used for SHG of wavelengths above 1000 nm and optical parametric amplification (OPA) of 1064nm pump light, and can also be used for quasi-phase matching. At the same time, lithium niobate crystals are also widely used in photoelectric regulators and waveguide materials, and used as Nd:YAG, Nd:YLF and Ti:sapphire laser Q switches. Pure LiNbO3 (LN) is a good candidate material for various optical devices, but has great drawbacks due to its low threshold optical damage. MgO:LiNbO3 increasing the threshold laser beam intensity by a factor of 100.
| Thickness/Diameter Tolerance | ±0.05 mm |
| Orientation Tolerence | < 0.5° |
| Size | 3 mm ~ 150 mm or Upon customer request |
| Dimension Tolerances | ±0.05 mm |
| Surface Quality | 10/5 S/D per MIL-O-13830A |
| Parallelism | < 10 arcsec |
| Perpendicularity | < 5 arcmin |
| Clear Aperture | > 90% |
| Wavefront Distortion | λ/8 @ 633 nm |
| Surface Flatness | < λ/8 @ 632.8 nm |
| Chamfer | < 0.1 mm @ 45° |
| Coating | AR/HR/PR coating upon customer's request |
| Chemical Formula | LiNbO3 |
|---|---|
| Crystal Structure | trigonal, R3C |
| Lattice Constant | a=b=5.148 Å, c=13.863 Å |
| Density | 4.64 g/cm3 |
| Melting Point | About 1140°C |
| Hardness (Mohs) | 5 |
| Thermal Conductivity (W/m/k@25°C) | 5.6 W/m/K |
| Thermal Expansion Coefficients | a11 =15.4x10-6/K a33 =7.5x10-6/K |
| Refractive Indices | n0 = 2.286 ne = 2.203 @632.8 nm |
| 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. |
| NLO Coefficients | d33 = 34.4 pm/V; d31 = d15 = 5.95 pm/V; d22 = 3.07 pm/V |
| Photorefractive Damage Threshold | 50 |
| 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 |
| Surface Damage Threshold | 300 MW/cm2 (10 ns, 1064 nm) |
Stock specification list
If need other specifications and quantities products, please contact us(sales@aogcrystal.com).
AR/HR/PR coatings are available at your specified wavelength.
Be sure to wear laser safety goggles when checking optical path and adjusting optical axis.
LiNbO3 & MgO:LiNbO3 is relatively soft and therefore requires precautions to protect its polished surfaces.
When angle adjusting is necessary, keep in mind that the acceptance angle of LiNbO3 & MgO:LiNbO3 is small.
| Part Number | Size | Theta, θ | Phi, φ | Doping | Coating S1/S2 |
|---|---|---|---|---|---|
| MgO-LN-Cry-001 | 5*5*20 mm | 42.9 | 0 | 5% | AR/AR(R < 1%)@2091 + 1045 nm |
| MgO-LN-Cry-002 | 5*5*20 mm | 64.2 | 0 | 5% | AR/AR(R < 1%)@2091 + 1045 nm + 697 nm |
| MgO-LN-Cry-002 | 10*10*2 mm | 44.1 | 0 | 5% | Uncoating |
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