Crystals Materials
LBO Crystal for Second-harmonic Generation (SHG), Optical Parametric Generators (OPG), Optical Parametric Oscillators (OPO), and Optical Parametric Amplifiers (OPA) applications
Lithium Triborate (LiB3O5 or LBO) is a type of nonlinear crystal that is commonly used in the generation of high-power laser radiation. It has a high damage threshold and a broad transparency range from the ultraviolet to the near-infrared region, making it suitable for a variety of laser applications.
LBO crystal is a negative biaxial crystal, with the main axes X, Y, and Z (nz>ny>nx) parallel to the crystallographic axes a, c, and b respectively.
| Thickness/Diameter Tolerance | ±0.05 mm |
| Cutting angleTole rance | △θ≤±0.25°, △φ≤±0.25° |
| 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 | LiB3O5 |
|---|---|
| Crystal Structure | Orthorhombic, Space group Pna21, Point group mm2 |
| Lattice Constant | a=8.4473Å ,b=7.3788Å, c=5.1395Å, Z=2 |
| Density | 2.47 g/cm3 |
| Melting Point | About 834°C |
| Thermal Conductivity (W/m/k@25°C) | 3.5 W/m/K |
| Thermal Expansion Coefficients | αx=10.8x10-5/K αy=-8.8x10-5/K αz=3.4x10-5/K |
| Hardness (Mohs) | 6 |
| Birefringence | negative biaxial |
| Transparency Range | 160 nm - 2600 nm |
| SHG Phase Matchable Range | 551~2600 nm (Type I) 790~2150 nm (Type II) |
| Therm-optic Coefficient (/℃, λ in μm) | dnx/dT=-9.3x10-6 dny/dT=-13.6x10-6 dnz/dT=(-6.3-2.1λ)x10-6 |
| Absorption Coefficients | < 0.1%/cm(@1064 nm), <0.3%/cm(@532 nm) |
| Angle Acceptance | 6.54mrad·cm (φ, Type I, 1064 SHG) 15.27mrad·cm (θ, Type II,1064 SHG) |
| Temperature Acceptance | 4.7℃·cm (Type I, 1064 SHG) 7.5℃·cm (Type II, 1064 SHG) |
| Spectral Acceptance | 1.0 nm·cm (Type I, 1064 SHG) 1.3 nm·cm (Type II, 1064 SHG) |
| Walk-off Angle | 0.60° (Type I 1064 SHG) 0.12° (Type II 1064 SHG) |
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.
LBO has a low susceptibility to moisture. Users are advised to provide dry conditions for both the use and preservation of LBO.
When angle adjusting is necessary, keep in mind that the acceptance angle of LBO is small.
| Part Number | Size | Theta, θ | Phi, φ | Coating S1/S2 | Application |
|---|---|---|---|---|---|
| LBO-CRY-001 | 3x3x10 mm | 90 | 11.6 | AR/AR@1064+532 nm | SHG@1064 nm |
| LBO-CRY-002 | 3x3x20 mm | 90 | 0 | AR/AR@1064+532 nm | NCPM SHG@1064,T=149°C |
| LBO-CRY-003 | 5x5x15 mm | 42.2 | 90 | AR/AR@1064+532/355nm | SHG@1064 nm |
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