Key Features of BBO Crystal:
- High average power handling
- Excellent temperature stability
- Broad transparency range
- Low absorption coefficient
- High electro-optic coefficient
- High damage threshold
- High extinction ratio
Description:
BBO crystals, or Beta Barium Borate crystals (β-BaB₂O₄), are a premier choice for electro-optic applications, particularly in high average power electro-optic Q-switches. Compared to other materials, BBO crystals exhibit superior performance in high power lasers, temperature stability, and immunity to piezoelectric ringing. These advantages make BBO crystals highly suitable for various demanding applications.
BBO crystals offer a broad transparency range (210-2000 nm) and exhibit low absorption coefficients, weak piezoelectric ringing, and superior electro-optic coefficients compared to traditional DKDP electro-optic modulators. These properties, combined with a high damage threshold and high extinction ratio, ensure stable and efficient performance in high-power laser applications.
At Shape Optics, we offer large-size BBO electro-optic crystals, providing a maximum size of up to 20×20×20 mm³.
Physical Properties:
- Chemical Formula: β-BaB₂O₄
- Crystal Structure: Trigonal
- Density: 3.85 g/cm³
- Hardness: Mohs 4.5
- Melting Point: 1095°C
Optical Properties:
- Transparency Range: 210-2000 nm
- Refractive Index: n_o=1.657, n_e=1.546 (at 1064 nm)
- Birefringence: Δn ≈ 0.111 (at 1064 nm)
Standard Specifications:
- Transmission at 1064 nm: >98.5%
- Aperture Size: Customizable (Standard sizes: 3, 4, 5, 6, 7, 8 mm)
- Half-Wave Voltage at 1064 nm: ≈ 7 kV (for 3×3×20 mm)
- Extinction Ratio: >30 dB
- Capacitance: 5-10 pF
Other Properties:
- Nonlinear Coefficient: d₃₆=2.0 pm/V
- Electro-optic Coefficients: γ₆₃=24.3 pm/V
- Absorption Coefficient: <0.006 cm⁻¹ at 1064 nm
Applications:
- Electro-optic Q-switches for high-power lasers
- Pulse pickers
- Laser modulation
- Cavity dumping
- Optical parametric oscillators (OPO)
Processing and Handling:
- BBO crystals require careful handling to avoid stress and temperature fluctuations.
- Recommended operating temperature range: -50°C to +70°C.
- Ensure both crystal faces are maintained at a consistent temperature for optimal performance.
Why Choose Shape Optics:
- Advanced crystal growth and fabrication techniques
- High-quality coating capabilities
- Customized solutions to meet specific requirements
- Reliable and consistent product performance
Shape Optics Strength and Capabilities:
Shape Optics leverages cutting-edge technology and extensive expertise in crystal growth and fabrication to deliver high-performance BBO crystals. Our commitment to quality and innovation ensures that our products meet the stringent demands of various advanced optical applications. Partner with us for reliable, high-quality optical components tailored to your needs.
