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Applications |
◆Optical parametric amplifiers(OPA) and oscillators(OPO) |
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◆Frequency doubling(SHG) and tripling(THG) |
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◆Diode laser pumped Nd:YAG and Nd: YLF laser. Alexandrite, Ti:Sapphire, Dye Lasers, Ultrashort Pulse Lasers |
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Features |
◇Broad transparency range from 160nm to 2600nm |
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◇High optical homogeneity (dn»10-6/cm) and being free of inclusion |
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◇Relatively large effective SHG coefficient (about three times that of KDP) |
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◇High damage threshold (18.9 GW/cm2 for a 1.3ns laser at 1053nm) |
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◇Wide acceptance angle and small walk-off |
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◇Type I and Type II non-critical phase matching (NCPM) in a wide wavelength range |
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◇Spectral NCPM(non-critical phase matching ) near 1300nm |
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| Main Specification |
Material |
LiB3O5 |
| Aperture |
up to 25 × 25 mm² Length up to 40 mm along X axis |
| Orientation accuracy of cut angle |
+/-0.5° (standard), +/-0.1° on request |
| Phase matching range |
SHG Phase Matchable Range |
| 551 ~ 2600nm (Type I) 790-2150nm (Type II) |
| Coating |
AR coatings dual band R < 0.1% |
| Angle tolerance |
Δθ< ± 0.5°; Δφ< ±0.5° |
| Dimension tolerance |
(W±0.1mm)×(H±0.1mm)×(L+0.5/-0.1mm) (L≥2.5mm) |
| (W±0.1mm)×(H±0.1mm)×(L+0.1/-0.1mm) (L<2.5mm) |
| Flatness |
λ/8 @ 633nm |
| Scratch/Dig code |
10/5 Scracth/dig per MIL-O-13830A |
| Parallelism |
<10 arc sec |
| Perpendicularity |
< 5 arc min |
| Wavefront distortion |
< λ/8 @ 633nm |
| Clear aperture |
> 90% central area |
| Working temperature |
25°C |
| Physical Properties |
Crystal Structure |
Orthorhombic, Space group Pna21, Point group mm2 |
| Lattice parameters |
a=8.4473Å, b=7.3788Å , c=5.1395Å , Z=2 |
| Melting Point |
834°C |
| Hardness |
~6 Mohs |
| Density |
2.474 g/cm3 |
| Specific heat |
1060 |
| Absorption Coefficient |
<0.1%/cm at 1064nm |
| <0.3%/cm at 532nm |
| Hygroscopic Susceptibility |
Weak |
| Thermal Expansion Coefficients |
ax=10.8×10-5/K, ay= -8.6×10-5/K, az=3.4×10-5/K |
| (in the range of 25°C- 900°C) |
| Thermal Conductivity |
35 mW.cm-1. °C-1 |
| Linear Optical Properties |
Transparency Range |
160 - 2600 nm |
| Refractive Indices |
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| Therm-Optic Coefficients |
dno/dT = - 9.3 x 10-6/°C |
| dne/dT = -13.6 x 10-6/°C |
| dne/dT = (-6.3+2.1λ) x 10-6/°C |
| Sellmeier Equations |
nx2=2.454140+0.011249/(λ2-0.011350)-0.014591λ2-6.60x10-5λ4 |
| ny2=2.539070+0.012711/(λ2-0.012523)-0.018540λ2+2.0x10-4λ4 |
| nz2=2.586179+0.013099/(λ2-0.011893)-0.017968λ2-2.26x10-4λ4 |
| (λ in μm) |
| Nonlinear Optical Properties |
Conversion efficient |
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| Nonlinear coefficients |
d31 = 1.05 ± 0.09 pm/V |
| d32 = -0.98 ± 0.09 pm/V |
| d33= 0.05 ± 0.006 pm/V |
| Damage Threshold |
[GW/cm2 ] |
| >10 for 1064nm, TEM00, 10ns, 10HZ (polished only) |
| >1 for 1064nm, TEM00, 10ns, 10HZ (AR-coated) |
| >0.5 for 532nm, TEM00, 10ns, 10HZ (AR-coated) |
| Angle Acceptance |
6.54mrad-cm (φ, Type I,1064 SHG) |
| 15.27mrad-cm (q, Type II,1064 SHG) |
| Temperature Acceptance |
4.7°C-cm (Type I, 1064 SHG) |
| 7.5°C-cm (Type II,1064 SHG) |
| Walk-off Angle |
0.60° (Type I 1064 SHG) |
| 0.12° (Type II 1064 SHG) |
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Notice |
| ★LBO has a very low susceptibility to moisture. Users are advised to provide dry conditions for both the use and preservation of LBO |
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★Polished surfaces of LBO requires precautions to prevent any damage |
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★Engineers can select and design the best solution for you, if the main parameters of your laser are provided, such as energy per pulse, pulse width and repetition rate for a pulsed laser, power for a cw laser, laser beam diameter, mode condition, divergence, wavelength tuning range, etc. |
