BIBO Laser Crystals
BIBO( BiB3O6) Crystal is a newly developed Nonlinear Optical Crystal. It features a large effective nonlinear coefficient, a high damage threshold, and inertness to moisture. Its nonlinear coefficient is 3.5–4 times higher than that of LBO, and 1.5–2 times higher than that of BBO. It is a promising SHG crystal to generate blue laser output.
Applications of BIBO Laser Crystals
SHG and THG for medium and high power Nd: lasers at 1064nm
SHG and THG of high power Nd: lasers at 1342nm & 1319nm
SHG for the Nd: Lasers at 914nm & 946nm
Optical Parametric Amplifiers (OPA) and Oscillators (OPO) application
Advantages of BIBO Laser Crystals
Large effective nonlinear coefficient
High damage threshold
Inertness to moisture
Specifications of BIBO Laser Crystals
Tolerance of cutting angle
△θ≤±0.25°,△φ≤±0.25°
Dimension tolerance
(W±0.1mm)x(H±0.1mm)x(L+0.5mm/-0.1mm) (L≥2.5mm)
(W±0.1mm)x(H±0.1mm)x(L+0.1mm/-0.1mm) (L<2.5mm)
Transmitting wavefront distortion
λ/8 @ 633 nm
Clear aperture
> 90% central area
Flatness
λ/8 @ 633 nm
Surface quality:Scratch/Dig
10/5 to MIL-O-13830A
Parallelism
better than 20 arc seconds
Perpendicularity
5 arc minutes
Clear Aperture:
> 90%
Chamfer:
< 0.1 mm @ 45°
Size
Upon customer request
Coating
AR/PR coating upon customer’s request
Damage Threshold
>0.3GW/cm2 at 1064nm, TEM00, 10ns, 10Hz
Quality Warranty Period
One year under proper use
Chemical and Structure Properties of BIBO Crystal
Crystal Structure
Monoclinic, Point Group 2
Lattice Parameter
a=7.116Å,b=4.993Å, c=6.508Å, β=105.62° ,Z=2
Melting Point
726°C
Melting Point
726°C
Density
5.033 g/cm3
Thermal Expansion Coefficient
αa=4.8x10^-5 /K, αb=4.4x10^-6 /K, αc=-2.69x10^-5 /K
Optical and Nonlinear Optical Properties of BIBO Crystal
Transparency Range
286–2500nm
Absorption Coefficient
<0.1%/cm at 1064nm
Physical Axis
X//b,(Z,a)=31.6°,(Y,c)=47.2°
SHG of 1064/532
Phase matching angle:168.9° from the z-axis in the YZ plane
Deff:3.0+/-0.1 pm/V
Angular acceptance:2.32 arad-cm
Walk-off angle:25.6 rad
temperature acceptance:2.17°C-cm
Sellmeier Coefficients
ni2(λ)=A+B / (λ2-C)-Dλ2 (λ in um)
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)
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