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BiBO

basic information
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Product description
BIBO crystals are mainly employed in following applications:
● SHG and THG for middle and high power Nd: lasers at 1064nm
● SHG and THG of high power Nd-lasers at 1342nm and 1319nm for red and blue lasers
● SHG for the Nd- Lasers at 914nm and 946nm for blue laser
● Optical Parametric Amplifiers (OPA) and Oscillators (OPO) application
Some typical experiment results are listed as follows for reference:
ØBy introducing frequency doubling to a diode-pumped Nd:YAG laser with BIBO crystal, a continuous-wave (CW) blue radiation of up to 2.86 W at 473nm was realized. A comparison of SHG@ 946nm is listed in the following table:
 
Crystals
Length
Deff
Walk-off
Output Power(W)
Convertion efficiency
(mm)
(pm/V)
(mrad)
BIBO
10.4
3.3
40.7
2.8
63%
LBO
10
0.81
11.3
1.52
33%
BBO
8
2
60.3
2.1
47%
 
ADVANTAGE:
● broad transparent range from 286nm to 2500nm;
● large effective nonlinear coefficient;
● high damage threshold;
● Wide temperature bandwidth
● Non hygroscopic
Dimension Tolerance W(+/-0.1)*H(+/-0.1)*L(+0.5/-0.1)mm
Angle Tolerance +/-0.25° Perpendicularity ≤10′
Scratch/Dig 20/10 Chamfer ≤0.2mmx45°
Parallelism ≤10″ Chips ≤0.1mm
Flatness λ/10@633nm Clear Aperture ≥90%
Wavefront distortion λ/8@633nm
Coatings

C1---AR@1342(<0.2%)&671(R<0.5%)nm

C2---AR@1319(<0.2%)&659.5(R<0.5%)nm

C3---AR@1064(<0.2%)&532(R<0.5%)nm

C4---AR@946(R<0.2%)&473(R<0.5%)nm

C5---AR@914(R<0.2%)&457(R<0.5%)nm

C6---AR@800(R<0.2%)&400(R<0.5%)nm

Damage Threshold 500MW/cm² (1064nm, 10ns, 10Hz)
 

Physical properties:
Crystal Structure Monoclinic,Point group 2
Lattice Parameter a=7.116Å, b=4.993Å, c=6.508Å, β=105.62° ,Z=2
Physical Axis X//b,(Z,a)=31.6°,(Y,c)=47.2°
Melting Point 726°C
Mohs Hardness 5-5.5
Density 5.033 g/cm3
Thermal Expansion coefficient αa=4.8x10-5/K,   αb=4.4x10-6/K,  αc=-2.69x10-5/K
Specific Heat 0.5 J/gm-K at 330 K
Optical Homogeneity Dn~10-6/cm
Hygroscopisity non
Optical Properties:
Transparency Range 286-2500nm
Absorption Coefficient <0.1%/cm at 1064nm
NLO coefficients (pm/V) d12=d14=2.3, d25=d36=2.4, d11=2.53,
d13=-1.3, d35=-0.9, d26=2.8
SHG 1064nm Phase matching angle:168.9° from z axis in YZ plane
Deff:3.0+/-0.1 pm/V
Angular acceptance:2.32 arad-cm
Walk-off angle :25.6 mrad
temperature acceptance:2.17°C-cm
Sellmeier Equations (λ in μm) n12=3.6545+0.0511/(λ2-0.0371)-0.0226λ2
n22=3.0740+0.0323/(λ2-0.0316)-0.01337λ2
n32=3.1685+0.0373/(λ2-0.0346)-0.01750λ2

 

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