BBO is an excellent nonlinear optical crystal for frequency doubling of visible and near IR wavelength.
High nonlinear optical coefficient
Wide transmission range, suitable for high power laser systems
Good optical uniformity and mechanical strength
Excellent thermal properties
High damage threshold
SPECIFICATIONS | |
Dimensional Tolerance | (W±0.1mm)×(H±0.1mm)×(L±0.2mm) |
Angle Tolerance | Δθ＜0.25°, Δφ＜0.25° |
Parallelism | ＜20″ |
Perpendicularity | ＜5′ |
Clear Aperture | ≥Central 95% of the diameter |
Surface Quality | 10/5 (MIL-PRF-13830B) |
Flatness | λ/10 @633nm |
Wavefront Distortion | ＜λ/8 @633nm |
CHEMICAL AND STRUCTURAL PROPERTIES | |||
Crystal structure | Orthorhombic | ||
Lattice parameters | a=12.532Å, b=6.71Å, c=10.864Å | ||
Melting point | 1090℃ | ||
Mohs hardness | 4.5 | ||
Density | 3.85 g/cm3 | ||
Thermal conductivity | 10W/(m·K) | ||
Thermal expansion coefficient | a:4.4×10-6/K, b:3.5×10-6/K, c:9.3×10-6/K | ||
OPTICAL AND NONLINEAR OPTICAL PROPERTIES | |||
Transmittance | ＞95%(1064nm) | ||
Optical uniformity | ＜0.1% | ||
Temperature stability | ＜10-6/K | ||
Nonlinear optical coefficient | d11=2.2, d31=2.8, d22=0.5, d33=13.5 | ||
Thermal coefficient | dn/dT=10-5/K | ||
Refractive index | no=1.655, ne=1.542(1064nm) | ||
Nonlinear Coefficien(pm/v) | 2.45(SHG), 2.20(THG) | ||
Effective SHG coefficient (SHG, THG) | 1.4(SHG), 0.8(THG) | ||
Walk-off Angle (mrad·cm) | 29.4(type I), 47.2(type II) | ||
Acceptance Angle (mrad·cm) | 18.5(type I), 24.7(type II) | ||
Phase Matching Range (℃m) | 266~291(SHG), 500~740(THG) | ||
Temperature Acceptance (℃) | 55(SHG), 30(THG) | ||
Damage Threshold(GW/cm2) | ~1(SHG), ~0.3(THG) | ||