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α-BBO Calcite Crystal Birefringence 3500nm Negative Crystal

Wuhan Star Optic Technology Co., Ltd
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    Buy cheap α-BBO Calcite Crystal Birefringence 3500nm Negative Crystal from wholesalers
     
    Buy cheap α-BBO Calcite Crystal Birefringence 3500nm Negative Crystal from wholesalers
    • Buy cheap α-BBO Calcite Crystal Birefringence 3500nm Negative Crystal from wholesalers

    α-BBO Calcite Crystal Birefringence 3500nm Negative Crystal

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    Brand Name : STAR OPTIC
    Model Number : α-BBO
    Certification : RoHS, ISO9001
    Price : Negotiable
    Payment Terms : T/T, Western Union, Paypal
    Supply Ability : 50000pcs/Month
    Delivery Time : Negotiable
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    α-BBO Calcite Crystal Birefringence 3500nm Negative Crystal


    Overview:

    High temperature form BBO (α-BaB2O4) is an excellent negative uni-axial birefringent crystal. It has large birefringence coefficient and good transmission over a broad range, from 189nm to 3500nm. Unlike ß-BBO, α-BBO is not useful for NLO application due to the centric symmetry with its crystal structure.

    α-BBO is excellent crystal in Glan Taylor, Glan Laser and Glan Thompson polarizer as well as walk-off beamsplitters, especially for high power and UV polarizers. This is due to their unique UV transparency, good mechanical properties and high damage threshold. Union Optic manufactures many Glan polarizers and beam displacers from high quality α-BBO crystals for UV and high power operations.


    General Specifications Of α-BBO:

    Dimension Tolerance±0.1mm
    Optical Axis Orientation±0.5deg
    Surface Quality20/10 Scratch and Dig
    Clear Aperture>90%
    Surface Flatness<λ/4@633nm
    Wavefront Distortion<λ/2@633nm
    Parallelism<15 arc seconds
    Beam Deviation<3 arc minutes
    AR CoatingUpon Request

    Physical and Optical Properties of α-BBO:

    Transparency Range189~3500nm
    Density3.85g/cm3
    Mohs Hardness4.5 glass like
    Optical HomogeneityΔn≈10-6/cm
    Therm-Optic Coefficientsdno/dT= - 9.3x10-6/°C
    dne/dT= - 16.6x10-6/°C
    Thermal Expansion Coefficients(25°C~900°C)aa=4x10-6/K
    ac=36x10-6/K
    Linear Absorption Coefficientsa<0.005cm-1 from 300nm to 2300nm
    Damage Threshold1GW/cm2 at 1064nm, 200MW/cm2 at 532nm

    Refractive Index

    Birefringence (Δn=ne-no)

    Walk-Off Angle at 45 deg(ρ)

    ne=1.53797, no=1.65790, Δn= - 0.11993, ρ= - 4.9532° at 1064nm
    ne=1.55345, no=1.67755, Δn= - 0.12411, ρ= - 5.0407° at 532nm
    ne=1.61145, no=1.76171, Δn= - 0.15026, ρ= - 5.6926° at 266nm
    Sellmeier Equations (λ in um)no2=2.7471+0.01878/( λ2-0.01822)-0.01354λ2
    ne2=2.37153+0.01224/(λ2-0.01667)-0.01516λ2


    Quality α-BBO Calcite Crystal Birefringence 3500nm Negative Crystal for sale
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