LiNbO3(Lithium Niobate) is so-called all-powerful function crystal, but the versatility make it cannot be the most excellent in specific applications. LNG Optics only deal with laser grade LiNbO3, offers reliable and cost-effective frequency doublers, Optical Parameter Oscillator, Electro-Optic modulator, Q-Switch and Birefringent elements.
Features & Standard specifications from LNG Optics:
Dimensions: Up to 10x10mm²±0.1mm
Length: Up to 60mm +0.2mm/-0.1mm
Phase Matching Angle accuracy: Δθ < 0.5o, Δφ <0.5o
Flatness: λ/8 @ 633nm
Transmitted Wavefront Distortion: λ/4 @ 633nm
Surface quality: 10/5 S/D before coating, 20/10 S/D after regular AR coatings
Clear Aperture: 90% central area
Parallelism: 20 arc seconds
Perpendicularity: 10 arc minutes
Chamfers: 0.2mm x 45°±5°
AR coatings: V-Type, Dual band
Laser damage threshold (polished only): LiNbO3250 MW/cm2, MgO:LiNbO31GW/cm2for 1064nm 10ns pulse
Physical and Chemical Properties:
|
Crystal Structure |
Trigonal, space group R3c, Point group 3m |
|
Lattice Parameters (Å) |
a=5.148, c=13.863 |
|
Melting point (oC) |
1250 |
|
Curie point (oC) |
1140 |
|
Mohs Hardness |
5 |
|
Density (gram/cm3) |
4.64 |
|
Hygroscopic Susceptibility |
No |
|
Thermal Conductivity (W/m/K) |
38 @ room temperature |
|
Thermal Expansion Coefficients (K-1) |
//a, 2 x 10-6, //c, 2.2 x 10-6 |
|
Resistivity (Ω•cm) |
10-20 x 106 |
|
Relative Dielectric Constant @ 25oC 1KHz |
εT11/ε0 = 43.2, εs11/ε0 = 42.5 εT33/ε0 = 20.8, εs33/ε0 = 20.0 |
Optical and Nonlinear Properties
|
Transparency Range |
420-5200nm |
|
Sellmeier Equations (λ in μm) |
no2=4.9048+0.11768/(λ2–0.0475)–0.027169λ2 ne2=4.5820+0.099169/(λ2-0.04443)–0.02195λ2 |
|
Refractive index |
no=2.286, ne=2.203 @ 632.8nm no=2.232, ne=2.156 @ 1064nm |
|
NLO Coefficient @ 1064nm (pm/V) |
d33=34.45, d31=d15=5.95, d22=13.07 |
|
Electro-Optics Coefficients (pm/V) |
γ33=30.8, γ51=28, γ13=8.6, γ22=6 |