BBO Nonlinear Crystal

Specifications

Crystal Type: BBO (Beta Barium Borate)
Phase Mathcing Type: Not Applicable
Mounting: Unmounted
Width: 3 mm
Height: 3 mm
Length: 20 mm
Flatness: <= Lambda/10
Surface Quality (Scratch-Dig): 20-10
AR Coating: One side
Chemical Formula: BaB2O4
Thermal Conductivity: 1.2 W/m/K (⊥c); 1.6 W/m/K (//c)
Thermal Expansion Coefficient: α,4×10-6/K; c,36×10-6/K
Transparency Range: 189 – 3500 nm
SHG Phase Matchable Range: 409.6 ∼ 3500nm (Type I); 525 ∼ 3500nm (TypeII)
NLO Coefficients: deff(I)=d31sinθ+ (d11cos3φ – d22sin3φ)cosθ,deff(II)=(d11sin3φ+ d22cos3θ)cos2θ
Therm-Optic Coefficients: dno/dT = – 9.3 x 10-6/◦C,dne/dT = -16.6 x 10-6/◦C
Half-Wave Voltage: 48 KV (at 1064 nm)
Damage Threshold At 1.064 μm: 5 GW/cm2 (10 ns); 10 GW/cm2 (1.3 ns)
Damage Threshold At 0.532 μm: 1 GW/cm2 (10 ns); 7 GW/cm2 (250 ps)
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Features


  • High Nonlinear Optical Coefficients: β-BBO exhibits exceptional nonlinear optical properties, making it ideal for frequency conversion applications.

  • Broad Transparency Range: The crystal has a wide transparency range from 189 nm to 3500 nm, suitable for ultraviolet, visible, and near-infrared applications.

  • High Damage Threshold: β-BBO can withstand high-intensity laser beams, ensuring durability and longevity in various optical setups.

  • Phase Matching Capabilities: Offers phase matching for a wide range of second-order interactions, enhancing its versatility in nonlinear optical applications.

  • Wide Range of Applications: Used in frequency converters, optical parametric oscillators, and quantum optics for generating entangled photon pairs.

  • Negative Uniaxial Crystal: Facilitates phase matching over its entire transparency range, making it a preferred choice for nonlinear frequency conversion.

  • High Optical Homogeneity: With δn≈10-6/cm, β-BBO ensures consistent performance across its volume.

  • Good Mechanical Properties: Offers appropriate mechanical stability for various optical applications.

  • Electro-Optic Applications: Utilized as an electro-optic crystal in Pockels cells, enhancing its functionality in optical modulation.

  • Medical and Material Processing Uses: Suitable for 532 nm lasers in medical applications and 266 nm lasers in material processing.

  • Effective SHG Coefficient: Large second harmonic generation (SHG) coefficient for efficient frequency doubling.

  • Thermal Stability: Features a thermal conductivity of 1.2 W/m/K (⊥c) and 1.6 W/m/K (//c), ensuring stable performance under varying temperatures.

Applications


  • Frequency Conversion: Utilized in ultraviolet, visible, and near-infrared frequency conversion applications.

  • Optical Parametric Oscillators (OPO): An essential component in OPO systems for generating a broad range of wavelengths.

  • Quantum Optics: Used to generate entangled photon pairs and ten-photon entanglement.

  • Optical Parametric Chirped Pulse Amplifiers: Crucial for near-infrared applications, delivering high average and ultrahigh peak powers.

  • Pockels Cells: Acts as an electro-optic crystal in Pockels cells for modulating light.

  • Material Processing: 266nm lasers are used in precision material processing applications.

  • Medical Applications: 532nm lasers are employed in various medical procedures.