Personlized Products Optical Parametric Amplification - LiNbO3 Crystal – WISOPTIC
Personlized Products Optical Parametric Amplification - LiNbO3 Crystal – WISOPTIC Detail:
LiNbO3 (Lithium Niobate) crystal is a multifunctional material that integrates properties of piezoelectric, ferroelectric, pyroelectric, nonlinear, electro-optical, photoelastic, etc. LiNbO3 has good thermal stability and chemical stability.
As one of the most thoroughly characterized nonlinear optical materials, LiNbO3 is suitable for a variety of frequency conversion applications. For example, it is widely used as frequency doublers for wavelength >1 μm and optical parametric oscillators (OPOs) pumped at 1064 nm as well as quasi-phase-matched (QPM) devices. Due to its large E-O and A-O coefficients, LiNbO3 crystal is also commonly used for phase modulators, waveguide substrate, surface acoustic wave wafers, and Q-switching of Nd:YAG, Nd:YLF and Ti-Sapphire lasers.
LiNbO3 can be doped with a variety of elements, such as Er, Pr, Mg, Fe, etc., which give the material unique properties. For example, the damage threshold of MgO: LiNbO3 is more than double that of pure LiNbO3.
Contact us for the best solution for your application of LiNbO3 crystals.
WISOPTIC Capabilities -LiNbO3
• Various sizes of finished components for different applications.
• Strict quality control
• Reliable delivery
• Very competitive price
• Technical support
WISOPTIC Standard Specifications* - LiNbO3
| Dimension Tolerance | ± 0.1 mm |
| Angle Tolerance | ± 0.5° |
| Flatness | < λ/8 @ 632.8 nm |
| Surface Quality | < 20/10 [S/D] |
| Parallelism | < 20” |
| Perpendicularity | ≤ 5′ |
| Chamfer | ≤ 0.2mm @ 45° |
| Transmitted Wavefront Distortion | < λ/4 @ 632.8 nm |
| Clear Aperture | > 90% central area |
| Coating | AR coating: R < 0.2% @ 1064 nm, R < 0.5% @ 532 nm |
| * Products with special requirement upon request. | |
DOWNLOAD Technical Data – LiNbO3
Advantages of MgO:LiNbO3 compared with LiNbO3
• Higher frequency doubling (SHG) efficiency for pulsed Nd:YAG (65%) and CW Nd:YAG (45%)
• Higher performance in applications of OPO, OPA, QPM doublers and integrated waveguide
• Much higher photorefractive damage threshold
Primary Applications – LiNbO3
• Frequency doublers for wavelength >1 μm
• Optical parametric oscillators (OPO) pumped at 1064 nm
• Quasi-phase-matched (QPM) devices
• Q-switches (for Nd:YAG, Nd:YLF and Ti-Sapphire lasers )
• Phase modulators, waveguide substrate, surface acoustic wave wafers
Physical Properties – LiNbO3
| Chemical formula | LiNbO3 |
| Crystal structure | Trigonal |
| Point group | 3m |
| Space group | R3c |
| Lattice constants | a=5.148 Å, c=13.863 Å, Z = 6 |
| Density | 4.628 g/cm3 |
| Melting point | 1255 °C |
| Curie temperature | 1140 °C |
| Mohs hardness | 5 |
| Thermal conductivity | 38 W/(m·K) @ 25°C |
| Thermal expansion coefficients | 2.0×10-6/K (//a), 2.2×10-6/K (//c) |
| Hygroscopicity | Non-hygroscopic |
Optical Properties – LiNbO3
| Transparency region (at “0” transmittance level) |
400-5500 nm | ||||
| Refractive indices | 1300 nm | 1064 nm | 632.8 nm | ||
|
ne=2.146 no=2.220 |
ne=2.156 no=2.232 |
ne=2.203 no=2.286 |
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| Thermal optic coefficients | dno/dT=-0.874×10-6/K @ 1.4 μm dne/dT=39.073×10-6/K @ 1.4 μm |
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Linear absorption coefficients |
326 nm |
1064 nm |
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| α = 2.0 /cm | α = 0.001~0.004 /cm | ||||
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NLO coefficients |
d33 = 34.4 pm/V, d22 = 3.07 pm/V, |
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| 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 |
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| Half-wave voltage (DC) | Electrical field // z, light ⊥ z | 3.03 kV | |||
| Electrical field // x or y, light // z | 4.02 kV | ||||
| Damage threshold | 100 MW/cm2 @ 1064nm, 10 ns | ||||
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