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BBO Nonlinear Crystals / Beta Barium Borate β-BaB2O4 Trigonal 1095°C Melting

Categories Nonlinear Crystals
Brand Name: CRYLINK
Place of Origin: China
Certification: Iso9001
MOQ: 1 Pieces
Price: negotiation
Packaging Details: Carton
Delivery Time: 3-4 weeks
Payment Terms: TT
Supply Ability: 100 pieces /month
Model Number: CRYLINK-BBO Nonlinear Crystal
Chemical formula: BaB2O4
Crystal structure: trigonal, 3m
Lattice Parameter: a=b=12.532Å,c=12.717Å, Z=6
Mass density: 3.85 g/cm3
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    BBO Nonlinear Crystals / Beta Barium Borate β-BaB2O4 Trigonal 1095°C Melting

    BBO Crystal is a one of the most important nonlinear optical crystals, beta-barium borate (β-BaB2O4,β-BBO) combines many outstanding features such as its high nonlinear optical coefficients, low group-velocity dispersion, broad transparency range (189–3500 nm) and high damage threshold. This unique combination ensures β-BBO crystal a promising candidate for a wide range of nonlinear optical applications such as frequency converters and optical parametric oscillators. In the realm of quantum optics, β-BBO crystal can be used to generate entangled photon pairs and ten-photon entanglement.


    Physical and Chemical Properties

    PropertyValue
    Chemical formulaBaB2O4
    Crystal structuretrigonal, 3m
    Lattice Parametera=b=12.532Å,c=12.717Å, Z=6
    Mass density3.85 g/cm3
    Moh hardness4
    Melting pointAbout 1095°C
    Thermal conductivity1.2 W/m/K (⊥c); 1.6 W/m/K (//c)
    Thermal expansion coefficientα,4×10-6/K; c,36×10-6/K
    Birefringencenegative uniaxial

    Linear Optical Properties

    PropertyValue
    Transparency Range189 – 3500 nm
    Absorption Coefficientα<0.1%/cm @1064nm

    at 1.0642 μm

    at 0.5321 μm

    at 0.2660 μm

    ne = 1.5425, no = 1.6551

    ne = 1.5555, no = 1.6749

    ne = 1.6146, no = 1.7571

    Sellmeier Equations(λ in μm)

    no2(λ) = 2.7359+0.01878/(λ2-0.01822)-0.01354λ2

    ne2(λ) = 2.3753+0.01224/(λ2-0.01667)-0.01516λ2

    Nonlinear Optical Properties

    PropertyValue
    SHG Phase Matchable Range409.6 ∼ 3500nm (Type I); 525 ∼ 3500nm (TypeII)
    NLO coefficientsd11= 5.8 x d36(KDP); d31 = 0.05 x d11; d22< 0.05 x d11
    deff(I)=d31sinθ+ (d11cos3φ – d22sin3φ)cosθ
    deff(II)=(d11sin3φ+ d22cos3θ)cos2θ
    Therm-Optic Coefficientsdno/dT = – 9.3 x 10-6/◦C
    dne/dT = -16.6 x 10-6/◦C
    Electro-Optic Coefficientsg11= 2.7 pm/V, g22, g31< 0.1 g11
    Half-Wave Voltage48 KV (at 1064 nm)
    Damage Threshold 
    at 1.064 μm5 GW/cm2 (10 ns); 10 GW/cm2 (1.3 ns)
    at 0.532 μm1 GW/cm2 (10 ns); 7 GW/cm2 (250 ps)

    Experimental Values of Phase-matching Angle (T =293K)

    Interacting wavelengths[μm]θexp [deg]
    SHG, o+o ⇒ e
    0.4096⇒0.204890
    0.41⇒0.2090
    0.41152⇒0.2057682.8
    0.41546⇒0.2077379.2
    0.418⇒0.20977.3
    0.429⇒0.214571
    0.4765⇒0.2382557
    0.488⇒0.24454.5
    0.4965⇒0.2482552.5
    0.5106⇒0.255350/50.6
    0.5145⇒0.2572549.5
    0.5321⇒0.2660547.3/47.5/47.6/48
    0.589⇒0.294541.5
    0.604⇒0.30240
    0.6156⇒0.307839
    0.616⇒0.30838
    0.70946⇒0.3547332.9/33/33.1/33.3/33.7
    0.78⇒0.3931/30
    0.8⇒0.426.5
    0.946⇒0.47324.9
    1.0642⇒0.532122.7/22.8
    SFG, o+o ⇒ e
    0.73865+0.25725⇒0.190881.7
    0.72747+0.26325⇒0.193376
    0.5922+0.2961⇒0.197488
    0.5964+0.2982⇒0.198882.5
    0.5991+0.29955⇒0.199780
    0.60465+0.30233⇒0.2015576.2
    0.5321+0.32561⇒0.20283.9
    0.6099+0.30495⇒0.203373.5
    0.5321+0.34691⇒0.2171.9
    0.7736+0.25787⇒0.193470.7
    0.5321+0.35473⇒0.2128470
    0.51567+0.38675⇒0.22164.7
    0.804+0.268⇒0.20164
    0.75+0.375⇒0.2561.7
    1.0642+0.26605⇒0.2128451.1
    0.78+0.373⇒0.252347.4
    1.0642+0.298⇒0.2328146.1
    0.5782+0.5106⇒0.2711546
    0.59099+0.5321⇒0.2844.7
    0.78+0.43⇒0.277243.4
    1.0642+0.35473⇒0.2660540.2
    1.0641+0.53205⇒0.354731.3
    1.0642+0.5321⇒0.3547331.1/31.3/31.4
    2.68823+0.5712⇒0.471121.8
    1.41831+1.0642⇒0.60821
    SHG, e+o ⇒ e
    0.5321⇒0.2660581
    0.70946⇒0.3547348/48.1
    1.0642⇒0.532131.6/32.4/32.7/32.9
    SFG, e+o ⇒ e
    1.0642+0.35473⇒0.2660546.6
    1.0642+0.5321⇒0.3547338.4/38.5
    SFG, o+e ⇒ e
    1.0642+0.5321⇒0.3547359.8

    Feature

    • The range of transmission is from 190 nm to 3500nm
    • Good physical properties
    • Appropriate mechanical properties
    • Effective SHG(Second-harmonic generation) coefficient is large
    • Damage threshold of 100 ps pulse with 10 J/cm2 at 1064 nm
    • The range of phase matching is large from 409.6 nm to 3500nm
    • Temperature bandwidth is about 55℃
    • Optical homogeneity is high:δn≈10-6/cm
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