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BIBO - Bismuth Trborate
Introduction
Bismuth Triborate (BiB3O6 or BIBO) is a newly developed nonlinear optical crystal. It possesses large effective nonlinear coefficient, high damage threshold and inertness with respect to moisture. Its nonlinear coefficient is 3.5-4 times higher than that of LBO, 1.5-2 times higher than that of BBO. It is a promising doubling crystal to produce blue laser. The top-seeded solution growth (TSSG) technique is used at CASTECH for the growth of BIBO single crystals.
CASTECH offers
- Strict quality control;
- Large crystal size up to 10 × 10 × 15 mm3;
- AR-coating mounts and re-working services;
- A large quantity of crystals in stock;
- Fast delivery (15 days for polished only, 20 days for AR-coated).
Basic Properties
|
Table 1. Chemical and Structural Properties |
|
|
Crystal Structure |
Monoclinic, Point group C2-2 |
|
Lattice Parameter |
a = 7.116 Å, b = 4.993 Å, c = 6.508 Å, β = 105.62°, Z = 2 |
|
Melting Point |
726 ℃ |
|
Mohs Hardness |
5-5.5 Mohs |
|
Density |
5.033 g/cm3 |
|
Thermal Expansion Coefficients |
αa = 4.8 × 10-5 /K, αb = 4.4 × 10-6 /K, αc = - 2.69 × 10-5 /K |
|
Table 2. Optical and Nonlinear Optical Properties |
||
|
Transparency Range |
286 - 2500 nm |
|
|
Absorption Coefficients |
< 0.1%/cm at 1064 nm |
|
|
Physical Axis |
X∥b, (Z, a) = 31.6°, (Y, c) = 47.2° |
|
|
SHG of 1064/532 nm |
Phase matching angle
|
168.9 ° from Z axis in YZ plane |
|
Deff |
3.0 ± 0.1 pm/V |
|
|
Angular acceptance |
2.32 mrad·cm |
|
|
Walk-off angle |
25.6 mrad |
|
|
Temperature acceptance |
2.17 ℃·cm |
|
|
Sellmeier coefficients |
n2i (λ) = A + B / (λ2 - C) - D λ2 (λ in µm) |
|||
|
|
A |
B |
C |
D |
|
n1 |
3.6545 (4) |
0.0511 (2) |
0.0371 (3) |
0.0226 (1) |
|
n2 |
3.0740 (3) |
0.0323 (1) |
0.0316 (3) |
0.01337 (6) |
|
n3 |
3.1685 (3) |
0.0373 (1) |
0.0346 (3) |
0.01750 (8) |
BIBO's Parameters
|
Table 3. Specifications |
|
|
Dimension Tolerance |
(W ± 0.1 mm) × (H ± 0.1 mm) × (L + 0.5/-0.1 mm) (L≧2.5 mm) (W ± 0.1 mm) × (H ± 0. 1 mm ) × (L + 0.1/-0.1 mm) (L＜2.5 mm) |
|
Clear Aperture |
Central 90% of the diameter |
|
Surface Quality (Scratch/Dig) |
10/5 to MIL-PRF-13830B |
|
Flatness |
≦λ/8 @633 nm |
|
Transmitted Wavefront Distortion |
≦λ/8 @633 nm |
|
Parallelism |
20 arc sec |
|
Perpendicularity |
≦15 arc min |
|
Angle Tolerance |
Δθ≦0.25 °, ΔФ≦0.25 ° |
|
Chamfer |
≦0.2 mm × 45° |
|
Chip |
≦0.1 mm |
|
Damage Threshold |
＞0.3 GW/cm2 @1064 nm, 10 ns, 10 Hz (AR-Coated) |
|
Quality Warranty Period |
One year under proper use. |
Coatings
- Dual or triple band AR-coatings of BIBO for SHG and THG applications Broad
- Band AR-coating (BBAR) and P-coating of BIBO for OPO applications
- Low reflectance
- Long durability
- Other coatings are available upon request
Products
-
BIBO - Bismuth Trborate
- BIBO has a large effective nonlinear coefficient which is 3.5 - 4 times higher than that of LBO, 1.5 - 2 times higher than that of BBO. It is used top-seeded solution growth technique at CASTECH.
-
Introduction
Bismuth Triborate (BiB3O6 or BIBO) is a newly developed nonlinear optical crystal. It possesses large effective nonlinear coefficient, high damage threshold and inertness with respect to moisture. Its nonlinear coefficient is 3.5-4 times higher than that of LBO, 1.5-2 times higher than that of BBO. It is a promising doubling crystal to produce blue laser. The top-seeded solution growth (TSSG) technique is used at CASTECH for the growth of BIBO single crystals.
CASTECH offers
- Strict quality control;
- Large crystal size up to 10 × 10 × 15 mm3;
- AR-coating mounts and re-working services;
- A large quantity of crystals in stock;
- Fast delivery (15 days for polished only, 20 days for AR-coated).
Basic Properties
|
Table 1. Chemical and Structural Properties |
|
|
Crystal Structure |
Monoclinic, Point group C2-2 |
|
Lattice Parameter |
a = 7.116 Å, b = 4.993 Å, c = 6.508 Å, β = 105.62°, Z = 2 |
|
Melting Point |
726 ℃ |
|
Mohs Hardness |
5-5.5 Mohs |
|
Density |
5.033 g/cm3 |
|
Thermal Expansion Coefficients |
αa = 4.8 × 10-5 /K, αb = 4.4 × 10-6 /K, αc = - 2.69 × 10-5 /K |
|
Table 2. Optical and Nonlinear Optical Properties |
||
|
Transparency Range |
286 - 2500 nm |
|
|
Absorption Coefficients |
< 0.1%/cm at 1064 nm |
|
|
Physical Axis |
X∥b, (Z, a) = 31.6°, (Y, c) = 47.2° |
|
|
SHG of 1064/532 nm |
Phase matching angle
|
168.9 ° from Z axis in YZ plane |
|
Deff |
3.0 ± 0.1 pm/V |
|
|
Angular acceptance |
2.32 mrad·cm |
|
|
Walk-off angle |
25.6 mrad |
|
|
Temperature acceptance |
2.17 ℃·cm |
|
|
Sellmeier coefficients |
n2i (λ) = A + B / (λ2 - C) - D λ2 (λ in µm) |
|||
|
|
A |
B |
C |
D |
|
n1 |
3.6545 (4) |
0.0511 (2) |
0.0371 (3) |
0.0226 (1) |
|
n2 |
3.0740 (3) |
0.0323 (1) |
0.0316 (3) |
0.01337 (6) |
|
n3 |
3.1685 (3) |
0.0373 (1) |
0.0346 (3) |
0.01750 (8) |
BIBO's Parameters
|
Table 3. Specifications |
|
|
Dimension Tolerance |
(W ± 0.1 mm) × (H ± 0.1 mm) × (L + 0.5/-0.1 mm) (L≧2.5 mm) (W ± 0.1 mm) × (H ± 0. 1 mm ) × (L + 0.1/-0.1 mm) (L＜2.5 mm) |
|
Clear Aperture |
Central 90% of the diameter |
|
Surface Quality (Scratch/Dig) |
10/5 to MIL-PRF-13830B |
|
Flatness |
≦λ/8 @633 nm |
|
Transmitted Wavefront Distortion |
≦λ/8 @633 nm |
|
Parallelism |
20 arc sec |
|
Perpendicularity |
≦15 arc min |
|
Angle Tolerance |
Δθ≦0.25 °, ΔФ≦0.25 ° |
|
Chamfer |
≦0.2 mm × 45° |
|
Chip |
≦0.1 mm |
|
Damage Threshold |
＞0.3 GW/cm2 @1064 nm, 10 ns, 10 Hz (AR-Coated) |
|
Quality Warranty Period |
One year under proper use. |
Coatings
- Dual or triple band AR-coatings of BIBO for SHG and THG applications Broad
- Band AR-coating (BBAR) and P-coating of BIBO for OPO applications
- Low reflectance
- Long durability
- Other coatings are available upon request
Enquiry
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