BBO Beta-Barium Borate Crystal for Laser Frequency Conversion

Specifications

Crystal Type: BBO (Beta Barium Borate)
Phase Mathcing Type: Type II, Type I
Mounting: Unmounted, Mounted
Width: 3 mm
Height: 3 mm
Length: 0.01 mm
Flatness: <= Lambda/8
Surface Quality (Scratch-Dig): 10-5
AR Coating: Not Coated, Both Sides, One side
Crystal Structure: Trigonal, space group R3c
Lattice Parameters: a=b=12.532Å, c=12.717Å, Z=6
Melting Point: About 1095°C
Mohs Hardness: 4
Density: 3.85 g/cm3
Thermal Conductivity Coefficients: ⊥c: 1.2 W/m/K; //c: 1.6 W/m/K
Thermal Expansion Coefficients: α11=4x10-6/K; α33=36x10-6/K
Size Tolerance: W±0.1mm × H±0.1mm × L+0.5/-0.1mm (L≥2.5mm)
Clear Aperture (CA): ≥90%
Scratch/Dig (S/D): 10/5 according to MIL-PRF-13830B
Flatness: ≤λ/10 @ 633nm
Wavefront Distortion (WFD): ≤λ/8 @ 633nm
Parallelism: 10
Perpendicularity: ≤10'
Angle Tolerance: ≤0.25°
Chamfer: ≤0.2mm @ 45°
Chip: ≤0.1mm
Laser-Induced Damage Threshold (LIDT): >1 GW/cm² @ 1064nm, 10ns, 10Hz (AR coating)
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Features


  • Broad Phase Matching Range: 409.6-3500 nm

  • Wide Transmission Region: 190-3500 nm

  • High Damage Threshold: Ensures durability under intense laser conditions

  • High Optical Homogeneity: δn ≈ 10-6/cm for superior performance

  • Applications: SHG, THG, 4HG, 5HG of Nd lasers; SHG, THG, 4HG of Ti:Al2O3 and Alexandrite lasers; SHG, THG, and Frequency-mixing of Dye lasers

  • Crystal Structure: Trigonal, space group R3c

  • Lattice Parameters: a=b=12.532 Å, c=12.717 Å, Z=6

  • Melting Point: Approximately 1095°C

  • Mohs Hardness: 4

  • Density: 3.85 g/cm3

  • Thermal Conductivity Coefficients: ⊥c: 1.2 W/m/K; //c: 1.6 W/m/K

  • Thermal Expansion Coefficients: α11 = 4x10-6/K; α33 = 36x10-6/K

  • Processing Indicators: Size Tolerance W±0.1mm × H±0.1mm × L+0.5/-0.1mm (L≥2.5mm)

  • Clear Aperture: ≥90%

  • Surface Quality: 10/5 according to MIL-PRF-13830B

  • Flatness: ≤λ/10 @ 633 nm

  • Wavefront Distortion: ≤λ/8 @ 633 nm

  • Parallelism: 10"

  • Perpendicularity: ≤10'

  • Angle Tolerance: ≤0.25°

Applications


  • SHG, THG, 4HG, 5HG of Nd lasers

  • SHG, THG, 4HG of Ti:Al2O3 and Alexandrite lasers

  • SHG, THG and Frequency-mixing of Dye lasers