BBO Beta-Barium Borate Crystal for Laser Frequency Conversion
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since 2018
Description
Welcome to Crystech, your trusted provider of high-quality optical crystals. One of our flagship products is the BBO (β-BaB2O4), a beta-barium borate crystal renowned for its exceptional optical properties. Grown using the flux method, BBO is a negative uniaxial crystal with a unique refractive index characteristic, where the ordinary refractive index (no) is larger than the extraordinary refractive index (ne). This distinctive feature allows for both Type I and Type II phase-matching through angle-tuning, making BBO particularly significant in the visible and far UV range.
Our BBO crystals are meticulously engineered to meet the highest standards of optical performance. With a broad phase-matchable range from 409.6 nm to 3500 nm, and a wide transmission region spanning 190 nm to 3500 nm, BBO crystals are versatile and adaptable for various optical applications. Additionally, they boast a high damage threshold and superior optical homogeneity, ensuring reliable performance in demanding environments.
At Crystech, we take pride in the physical and optical properties of our BBO crystals. These crystals have a trigonal crystal structure with space group R3c, and lattice parameters of a = b = 12.532 Å, c = 12.717 Å, with Z = 6. They have a melting point of approximately 1095°C, a Mohs hardness of 4, and a density of 3.85 g/cm3. Furthermore, the thermal conductivity coefficients are ⊥c: 1.2 W/m/K and //c: 1.6 W/m/K, while the thermal expansion coefficients are α11 = 4x10-6/K and α33 = 36x10-6/K.
Our BBO crystals are processed with precision to ensure optimal performance. They have size tolerances of W±0.1mm × H±0.1mm × L+0.5/-0.1mm (L≥2.5mm), a clear aperture of ≥90%, and a surface quality of 10/5 according to MIL-PRF-13830B. The flatness is ≤λ/10@633nm, wavefront distortion is ≤λ/8@633nm, and parallelism is 10". The perpendicularity is ≤10', angle tolerance is ≤0.25°, and chamfer is ≤0.2mm@45°. Additionally, they have a laser-induced damage threshold (LIDT) of >1GW/cm²@1064nm, 10ns, 10Hz with AR coating.
BBO Beta-Barium Borate Crystal for Laser Frequency Conversion
Specifications |
|
|---|---|
| Crystal Type: | BBO (Beta Barium Borate) |
| Phase Mathcing Type: | Type II, Type I |
| Mounting: | Unmounted, Mounted |
| Width: | 3 mm |
| Height: | 3 mm |
| Length: | 0.01 mm |
| Flatness: | <= Lambda/8 |
| Surface Quality (Scratch-Dig): | 10-5 |
| AR Coating: | Not Coated, Both Sides, One side |
| Crystal Structure: | Trigonal, space group R3c |
| Lattice Parameters: | a=b=12.532Å, c=12.717Å, Z=6 |
| Melting Point: | About 1095°C |
| Mohs Hardness: | 4 |
| Density: | 3.85 g/cm3 |
| Thermal Conductivity Coefficients: | ⊥c: 1.2 W/m/K; //c: 1.6 W/m/K |
| Thermal Expansion Coefficients: | α11=4x10-6/K; α33=36x10-6/K |
| Size Tolerance: | W±0.1mm × H±0.1mm × L+0.5/-0.1mm (L≥2.5mm) |
| Clear Aperture (CA): | ≥90% |
| Scratch/Dig (S/D): | 10/5 according to MIL-PRF-13830B |
| Flatness: | ≤λ/10 @ 633nm |
| Wavefront Distortion (WFD): | ≤λ/8 @ 633nm |
| Parallelism: | 10 |
| Perpendicularity: | ≤10' |
| Angle Tolerance: | ≤0.25° |
| Chamfer: | ≤0.2mm @ 45° |
| Chip: | ≤0.1mm |
| Laser-Induced Damage Threshold (LIDT): | >1 GW/cm² @ 1064nm, 10ns, 10Hz (AR coating) |
Features
- Broad Phase Matching Range: 409.6-3500 nm
- Wide Transmission Region: 190-3500 nm
- High Damage Threshold: Ensures durability under intense laser conditions
- High Optical Homogeneity: δn ≈ 10-6/cm for superior performance
- Applications: SHG, THG, 4HG, 5HG of Nd lasers; SHG, THG, 4HG of Ti:Al2O3 and Alexandrite lasers; SHG, THG, and Frequency-mixing of Dye lasers
- Crystal Structure: Trigonal, space group R3c
- Lattice Parameters: a=b=12.532 Å, c=12.717 Å, Z=6
- Melting Point: Approximately 1095°C
- Mohs Hardness: 4
- Density: 3.85 g/cm3
- Thermal Conductivity Coefficients: ⊥c: 1.2 W/m/K; //c: 1.6 W/m/K
- Thermal Expansion Coefficients: α11 = 4x10-6/K; α33 = 36x10-6/K
- Processing Indicators: Size Tolerance W±0.1mm × H±0.1mm × L+0.5/-0.1mm (L≥2.5mm)
- Clear Aperture: ≥90%
- Surface Quality: 10/5 according to MIL-PRF-13830B
- Flatness: ≤λ/10 @ 633 nm
- Wavefront Distortion: ≤λ/8 @ 633 nm
- Parallelism: 10"
- Perpendicularity: ≤10'
- Angle Tolerance: ≤0.25°
Applications
- SHG, THG, 4HG, 5HG of Nd lasers
- SHG, THG, 4HG of Ti:Al2O3 and Alexandrite lasers
- SHG, THG and Frequency-mixing of Dye lasers
Frequently Asked Questions
BBO (Beta-Barium Borate, β-BaB2O4) is a negative uniaxial crystal grown using the flux method, known for its applications in second, third, fourth, and fifth harmonic generation of various lasers.
BBO is used for SHG, THG, 4HG, and 5HG of Nd lasers, SHG, THG, 4HG of Ti:Al2O3 and Alexandrite lasers, and SHG, THG, and frequency-mixing of Dye lasers.
BBO has a broad phase-matchable range from 409.6 nm to 3500 nm.
BBO has a wide transmission region from 190 nm to 3500 nm.
BBO has a high damage threshold greater than 1 GW/cm² at 1064 nm, 10 ns, 10 Hz with AR coating.
BBO has a trigonal crystal structure, a melting point of about 1095°C, Mohs hardness of 4, and a density of 3.85 g/cm³.
BBO crystals have size tolerances of W±0.1mm×H±0.1mm×L+0.5/-0.1mm (L≥2.5mm), flatness ≤λ/10@633nm, and parallelism of 10" among other precise processing indicators.