BBO Electro-Optic Crystal Basic characteristics
BBO, β-barium borate crystal (β-Barium Borate Crystal), is an important nonlinear optical crystal widely used in laser technology and one of the most established nonlinear optical crystals for the ultraviolet band.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Basic Properties - Crystal Structure [Negative Uniaxial Crystal] | Trigonal Crystal System |
| Basic Properties - Unit Cell Parameters [Room temperature] | a=b=12.532 Å，c=12.717 Å，Z=6 |
| Basic Properties-Melting Point | 1095±5 ℃ |
| Basic Properties - Mohs Hardness | 4.5 |
| Basic Properties - Density | 3.85 g/cm³ |
| Basic Characteristics - Thermal Conductivity [Room temperature] | ⊥c: 1.2 W/m·K；∥c: 1.6 W/m·K |
| Basic Characteristics - Thermal Expansion Coefficient [25~900℃] | α₁₁=4×10⁻⁶/K，α₃₃=36×10⁻⁶/K |
| Basic Properties-Transmission Band | 189~3500 nm |
| Basic Properties-SHG Phase-Matching Range [Room temperature] | 409.6~3500 nm（Type I）；525~3500 nm（Type II） |
| Basic Properties - Thermo-Optic Coefficient [Room temperature] | dnₒ/dT= -16.6×10⁻⁶/℃；dnₑ/dT= -9.3×10⁻⁶/℃ |
| Basic Properties-Absorption Coefficient | α(1064 nm)<0.03%/cm； α(532 nm)<0.05%/cm； α(266nm)＜0.1%/cm |
| Basic Properties-Beam Divergence Angle (Acceptance Angle) | 0.8 mrad·cm（Type I, 1064 nm SHG）； 1.27 mrad·cm（Type II, 1064 nm SHG） |
| Basic Properties - Temperature Bandwidth | ~55 ℃·cm（1064 nm SHG） |
| Basic Properties-Acceptance Spectral Width | 1.1 nm·cm（1064 nm SHG） |
| Basic Properties-Walk-Off Angle | 2.7°（Type I, 1064 nm SHG）； 3.2°（Type II, 1064 nm SHG） |
| Basic Properties-Nonlinear Optical Coefficient [Room temperature] | d₁₁=5.8×d₃₆(KDP)； d₃₁=0.05×d₁₁； d₂₂<0.05×d₁₁ |
| Basic Properties-Nonzero Nonlinear Optical Coefficient [According to Crystal Symmetry] | d₁₁, d₃₁, d₂₂ (Nonzero, with d₁₁ the Largest) |
| Basic Properties-Electro-Optic Coefficient [Room temperature] | γ₂₂=2.7 pm/V |
| Basic Properties - Half-Wave Voltage | 48 kV（1064 nm，3×3×20 mm） |
| Basic Properties-Resistivity [Room temperature] | >10¹¹ Ω·cm |
| Basic Properties-Relative Permittivity [Room temperature] | εᵀ₁₁/ε₀=6.7；εᵀ₃₃/ε₀=8.1；Tanθ<0.001 |
Applications
Key Features
Datasheet
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Supplier Information
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