Flatness | λ/8 @ 633 nm |
Parallelism | < 20 arcsec |
Perpendicularity | < 5 arcmin |
Angle tolerance | < 30 arcmin |
Aperture tolerance | ± 0.1 mm |
Surface quality | 10/5 scratch & dig per MIL-O-13830A |
Clear aperture | 90% of full aperture |
Physical and Optical Properties
Chemical formula | LiB3O5 |
Crystal structure | orthorhombic, mm2 |
Optical symmetry | Negative biaxial |
Space group | Pna21 |
Density | 2.47 g/cm3 |
Mohs hardness | 6 |
Optical homogeneity | ∂n = 10-6 cm-1 |
Transparency region at “0” transmittance level | 155 – 3200 nm |
Linear absorption coefficient at 1064 nm | < 0.01 % cm-1 |
Refractive indices: at 1064 nm at 532 nm at 355 nm |
nx ny nz 1.5656 1.5905 1.6055 1.5785 1.6065 1.6212 1.5971 1.6275 1.6430 |
Sellmeier equations (λ, μm) | nx2 = 2.4542 + 0.01125 / (λ2 – 0.01135) – 0.01388 λ2 |
ny2 = 2.5390 + 0.01277 / (λ2 – 0.01189) – 0.01849 λ2 |
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nz2 = 2.5865 + 0.01310 / (λ2 – 0.01223) – 0.01862 λ2 |
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Phase matching range Type 1 SHG | 554 – 2600 nm |
Phase matching range Type 2 SHG | 790 – 2150 nm |
NCPM SHG temperature dependence: Type 1 range 950 – 1300 nm Type 1 range 1300 – 1800 nm Type 2 range 1100 – 1500 nm |
T1 = - 1893.3λ4 + 8886.6λ3 – 13019.8λ2 + 5401.5λ + 863.9 |
NCPM SHG at 1064 nm Type 1 temperature | 149 °C |
NCPM SHG at 1319 nm Type 2 temperature | 43 °C |
Walk-off angle | 7 mrad (Type 1 SHG 1064 nm) |
Thermal acceptance | 6.4 K×cm (Type 1 SHG 1064 nm) |
Angular acceptance | 6.5 mrad×cm (Type 1 SHG 1064 nm) 248 mrad×cm (Type 1 NCPM SHG 1064 nm) |
Nonlinearity coefficients at 1064nm: | d31 = (1.05±0.09) pm/V d32 = -(0.98±0.09) pm/V d33 = (0.05±0.006) pm/V |
Effective nonlinearity: XY plane YZ plane |
dooe = d32 cosφ doeo = deoo = d31 cosθ |
Expansion coefficients: |
αx = 10.8 × 10-5K-1 |
EKSMA Optics LBO Crystals
166.3 kB |
Lithium Triborate (LBO) is a nonlinear optical crystal with a combination of unique features:
LBO crystal is perfectly suitable for various nonlinear optical applications, like frequency doubling and tripling of high peak power pulsed Nd doped, Ti:Sapphire and Dye lasers, optical parametric oscillators (OPO) of both Type 1 and Type 2 phase-matching, non-critical phase-matching for conversion of CW and quasi-CW radiation.
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