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BiBO

BiBO( BiB3O6) is a newly developed Nonlinear Optical Crystal. It possesses large effective nonlinear coeffcient, 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 for the growth of BiBO single crystals.

Basic properties:

Crystal Structure: Monoclinic,Point group 2
Lattice Parameter: a=7.116Å, b=4.993Å, c=6.508Å, ß=105.62°, Z=2
Melting Point: 726°C
Mohs Hardness: 5-5.5
Density: 5.033 g/cm3
Thermal Expansion coefficient: aa=4.8x10-5/K, ab=4.4x10-6/K, ac=-2.69x10-5/K

Optical and Nonlinear Optical properties:

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 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 coefficients:
ni^2(L)=A+B /(L^2-C)-D^2 (L in um)
n1 A=3.6545 B=0.0511 C=0.0371 D=0.0226
n2 A=3.0740 B=0.0323 C=0.0316 D=0.01337
n3 A=3.1685 B=0.0373 C=0.0346 D=0.01750

General Specifications:

Dimension Tolerance: +0/-0.1mm(WxH) and+0.1/-0.2mm thickness
Surface Quality --- 10-5 Scratch-dig
Flatness ---------- <1/8 @633nm
Chamfer ---------- 0.1mm@45deg.
Clear Aperture ---- Central 90% of Diameter
Parallelism ------- <10 arc seconds
Perpendicular ----- <10 arc minutes
Orientation Angle --- +/-0.25deg.
Damage Threshold --- 0.3GW/cm2@1064nm10ns
Coating:
Dual wavelength AR coating: R<0.2%

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