• KBr (Potassium Bromide) circular window/crystal 30.0mm x 5.0mm, 0.23-25μm

    KBr (Potassium Bromide) is one of the most useful materials for general spectral windows and applications where humidity sensitivity is not a significant concern. KBr is the most commonly used spectral material in IR spectrophotometers. Potassium bromide is grown using the Kyropoulos technique. KBr is prone to cracking, but it can be polished to higher standards under humidity-controlled conditions.customer needs.

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    产品货号A80160085

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    主要参数
  • 核心参数
  • 尺寸图
  • Technical Parameters

    Transmission range

    0.23~25μm

    Refractive index

    1.527μm at 10μm(1)

    Reflection loss

    8.3% at 10μm

    Absorption coefficient

    3×10-6 @ 1064nm;14×10-6cm-1 @ 10.6(7)

    Absorption peak

    77.6μm

    dn / dT:

    -40.83×10-6 /℃(1)

    dn /dμ= 0:

    4.2μm

    Density

    2.753g / cc(2)

    Melting point

    730℃

    Thermal conductivity

    4.816W m-1 K-1 @ 319K(3)

    Thermal expansion

    43×10-6 /°K @ 300K(4)

    Hardness

    In <100> orientation, Knoop 7 with 200g indenter

    Specific heat capacity

    435JKg-1 K-1

    Dielectric constant

    4.9 @ 1MHz(6)

    Young's modulus (E)

    26.8GPa(4)

    Shear modulus (G)

    5.08GPa(4)

    Bulk modulus (K)

    15.03GPa(4)

    Elastic modulus

    C11 = 34.5 C12 = 5.4 C44 = 5.08(5)

    Fracture modulus

    3.3MPa(475psi)(4)

    Poisson's ratio

    0.203

    Solubility

    53.48g / 100g water,273K

    Molecular weight

    119.01

    Class/Structure

    Cubic  FCC, NaCl, Fm3m, (100) cleavage



    Assembly reference for Kbr beam splitter

    5.1.jpg


    Spectral transmission curve

      

    4.11.jpg

     

     

     

     


    KBr IR transmission curve

    4.22.jpg

    Refractive index: (No = Ordinary Ray)

    µm

    No

    µm

    No

    µm

    No

    0.405

    1.5898

    0.436

    1.5815

    0.486

    1.5718

    0.508

    1.5684

    0.546

    1.5639

    0.587

    1.5600

    0.643

    1.5559

    0.707

    1.5524

    1.014

    1.5441

    2.440

    1.5373

    3.419

    1.5361

    4.258

    1.5352

    6.238

    1.5329

    8.662

    1.5290

    9.724

    1.5270

    11.04

    1.5240

    14.29

    1.5150

    17.40

    1.5039

    19.91

    1.4929

    23.86

    1.4714

    25.14

    1.4632

    28.00

    1.4423

    30.00

    1.4253



     


    KBr circular window

    5.2.png



    Ordering info

    PN#

    Specs (D×L)(mm)

    Thickness(L)

    S/D

    Material grade

    KBRP13-2

    13.0mm×2.0mm

    ±0.1mm

    60/40

    IR

    KBRP20-2

    20.0mm×2.0mm

    ±0.1mm

    60/40

    IR

    KBRP25-2

    25.0mm×2.0mm

    ±0.1mm

    60/40

    IR

    KBRP25-4

    25.0mm×4.0mm

    ±0.1mm

    60/40

    IR

    KBRP25-5

    25.0mm×5.0mm

    ±0.1mm

    60/40

    IR

    KBRP30-5

    30.0mm×5.0mm

    ±0.1mm

    60/40

    IR

    KBRP40-5

    40.0mm×5.0mm

    ±0.1mm

    60/40

    IR

    KBRP45-5

    45.0mm×5.0mm

    ±0.1mm

    60/40

    IR

    KBRP50-5

    50.0mm×5.0mm

    ±0.1mm

    60/40

    IR

     


    KBr rectangular window

    5.3.png

      

      

    Ordering info

    PN#

    Specs(D×L)(mm)

    Material grade

    KBRP23-41-5D

    23.0×41.0×5.0mm Punched

    IR polished

    KBRP23-41-5

    23.0×41.0×5.0mm Not punched

    IR polished

     


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