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Magnesium Fluoride Wedged Windows


  • 30 arcminute Wedge
  • Eliminate Etalon Effects and Prevent Cavity Feedback
  • Transmission from 200 nm to 6.0 µm
  • Custom Options Available

WW61050

Ø1"

Back Reflections from Wedges Are not Collinear with the Incident Beam
(Drawing not to Scale)

WW60530

Ø1/2"

Related Items


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Wedged Window Selection Guide
Wavelength Range Substrate Material
150 nm - 5.0 µm Sapphire
180 nm - 8.0 µm Calcium Fluoride (CaF2)
185 nm - 2.1 μm UV Fused Silica
200 nm - 6.0 µm Magnesium Fluoride (MgF2)
200 nm - 11 µm Barium Fluoride (BaF2)
250 nm - 1.6 µm UV Fused Silica for 45° AOI
350 nm - 2.0 μm N-BK7
600 nm - 16 µm Zinc Selenide (ZnSe)
1.2 - 8.0 µm Silicon (Si)
2.0 - 16 µm Germanium (Ge)
V-Coated Wedged Windows
    Optic Cleaning Tutorial  Optical Coatings Guide

    Features

    • 30 arcmin Wedged Windows
    • Ø1/2" and Ø1" Windows Available
    • AR Coated Versions and Custom Sizes Available by Contacting Tech Support

    Thorlabs offers uncoated Ø1/2" and Ø1" wedged magnesium fluoride (MgF2) windows. These wedged optics eliminate fringe patterns and can be used to help avoid cavity feedback. Windows are useful for protecting a laser output from environmental effects and for beam sampling applications. We also supply planar windows with a variety of substrate materials and coating options.

    MgF2 windows are well suited for deep-UV applications, even extending into the vacuum-UV region. They offer >50% transmission at 120 nm, making them suitable for use with excimer laser systems, as well as applications involving the Hydrogen Lyman-α line at 121 nm. Thorlabs' MgFwindows are also usable in the UVA, UVB, visible and IR ranges, with approximately 94% transmission from 200 - 1000 nm, and approximately 95% transmission from 1 - 6 µm. To minimize birefringence, our MgF2 windows are cut so that the crystal axis is parallel with the optical axis.

    In addition to the MgF2 wedged windows offered here, Thorlabs also offers wedged windows with other substrate materials (see the selection guide to the right). Wedged Laser Windows with AR coatings centered around common lasing wavelengths and wedged Beam Samplers with broadband AR coatings on only one face are also available. Additionally, wedged windows with our standard AR coatings or custom sizes and thicknesses are available; please contact Tech Support for more information.


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    Window Selection Guide (Table Sorted by Wavelength)
    Substrate and Window Type Wavelength Range Available AR Coatings Reflectance over AR Coating Rangea Transmission Data Reflectance Data
    Sapphire:
    Flat or Wedged
    150 nm - 5.0 μm Uncoated -
    Raw Data
    -
     -D Coating, 1.65 - 3.0 µm Ravg < 1.0% at 0° AOI
    Raw Data

    Raw Data
     -E1 Coating, 2.0 - 5.0 µm Ravg < 1.50%, Rabs < 3.0% (per Surface, 2.0 - 5.0 µm);
    Ravg < 1.75% (per Surface, 2.0 - 4.0 µm) at 0° AOI

    Raw Data

    Raw Data
    Calcium Fluoride (CaF2):
    Flat or Wedged
    180 nm - 8.0 μm  Uncoated -
    Raw Data
    -
    -D Coating, 1.65 - 3.0 µm Ravg < 1.0%; Rabs < 2.0% at 0° AOI
    Raw Data

    Raw Data
    UV Fused Silica:
    FlatWedgedV-Coated Flat, or
    V-Coated Wedged
    185 nm - 2.1 μm Uncoated
    (Flat or Wedged)
    -
    Raw Data
    -
    -UV Coating, 245 - 400 nm
    (Flat or Wedged)
    Ravg < 0.5% at 0° AOI -
    Raw Data
    -C3 Coating, 261 - 266 nm
    (V-Coated)
    Ravg < 0.5% at 0° AOI - Click to View Index Plot
    Raw Data
    -C6 Coating, 350 - 450 nm
    (V-Coated)
    Ravg < 0.5% at 0° AOI - Click to View Index Plot
    Raw Data
     -A Coating, 350 - 700 nm 
    (Flat or Wedged)
    Ravg < 0.5% at 0° AOI -
    Raw Data
     -B Coating, 650 - 1050 nm 
    (Flat or Wedged)
    Ravg < 0.5% at 0° AOI -
    Raw Data
     -C Coating, 1050 - 1700 nm 
    (Flat or Wedged)
    Ravg < 0.5% at 0° AOI -
    Raw Data
    Magnesium Fluoride (MgF2):
    Flat or Wedged
    200 nm - 6.0 μm Uncoated -
    Raw Data
    -
    Barium Fluoride (BaF2):
    Wedged 
    (Flat BaF2 Windows
    Available Below)
    200 nm - 11 µm Uncoated -
    Raw Data
    -
    -E1 Coating, 2 - 5 µm  Ravg < 1.25%; Rabs < 2.5%  at 0° AOI
    Raw Data
    Icon
    Raw Data
    UV Fused Silica, for 45° AOI:
    Flat or Wedged
    250 nm - 1.6 µm Coating for 
    250 nm - 450 nm
    Ravg < 1.0% at 45° AOI info
    Raw Data
    Coating for
    350 nm - 1100 nm
    Ravg < 2.0% at 45° AOI info
    Raw Data
    Coating for
    400 nm - 700 nm
    Ravg < 1.0% at 45° AOI info
    Raw Data
    Coating for
    600 nm - 1700 nm
    Ravg < 1.5% at 45° AOI info
    Raw Data
    Coating for
    700 nm - 1100 nm
    Ravg < 1.0% at 45° AOI info
    Raw Data
    Coating for
    1200 nm - 1600 nm
    Ravg < 1.0% at 45° AOI info
    Raw Data
    Infrasil®:
    Flat
    300 nm - 3 µm Uncoated -
    Raw Data
     -
    N-BK7:
    FlatWedgedV-Coated Flat, or
    V-Coated Wedged
    350 nm - 2.0 μm Uncoated
    (Flat or Wedged)
    -
    Raw Data
    -
     -A Coating, 350 - 700 nm  
    (Flat or Wedged)
    Ravg < 0.5% at 0° AOI -
    Raw Data
    -C7 Coating, 400 - 700 nm
    (V-Coated)
    Ravg < 0.5% at 0° AOI - Click to View Index Plot
    Raw Data
    -C10 Coating, 523 - 532 nm (V-Coated) Ravg < 0.5% at 0° AOI - Click to View Index Plot
    Raw Data
    -C11 Coating, 610 - 860 nm 
    (V-Coated)
    Ravg < 0.5% at 0° AOI - Click to View Index Plot
    Raw Data
    -B Coating, 650 - 1050 nm 
    (Flat or Wedged)
    Ravg < 0.5% at 0° AOI -
    Raw Data
    -C13 Coating, 700 - 1100 nm 
    (V-Coated)
    Ravg < 0.5% at 0° AOI - Click to View Index Plot
    Raw Data
    C14 Coating, 1047 - 1064 nm
    (V-Coated)
    Ravg < 0.5% at 0° AOI - Click to View Index Plot
    Raw Data
    -C15 Coating, 523 - 532 nm
    & 1047 - 1064 nm
    (V-Coated) 
    Ravg < 0.5% at 0° AOI - Click to View Index Plot
    Raw Data
    -C Coating, 1050 - 1700 nm 
    (Flat or Wedged)
    Ravg < 0.5% at 0° AOI -
    Raw Data
    Zinc Selenide (ZnSe):
    Flat or Wedged
    600 nm - 16 µm Uncoated -
    Raw Data
    -
    -D Coating, 1.65 - 3.0 µm Ravg < 1.0%; Rabs < 2.0% at 0° AOI
    Raw Data

    Raw Data
    -E4 Coating, 2 - 13 µm
    (Only Flat)
    Ravg < 3.5%; Rabs < 6% at 0° AOI
    Raw Data

    Raw Data
    -E2 Coating, 4.5 - 7.5 µm
    (Only Flat)
    Ravg < 1.0%; Rabs < 2.0% at 0° AOI
    Raw Data

    Raw Data
    -E3 Coating, 7 - 12 µm
    (Only Wedged)
    Ravg < 1.0%; Rabs < 2.0% at 0° AOI
    Raw Data
    Icon
    Raw Data
    -G Coating, 7 - 12 µm
    (Only Flat)
    Ravg < 1% at 0° AOI
    Raw Data

    Raw Data
    Silicon (Si):
    Flat or Wedged
    1.2 - 8.0 μm Uncoated -
    Raw Data
    -
     -E1 Coating, 2 - 5 µm
    (Only Wedged)
    Ravg < 1.25%; Rabs < 2.5% at 0° AOI
    Raw Data
    Icon
    Raw Data
    -E Coating, 3 - 5 µm
    (Only Flat)
    Ravg < 2% at 0° AOI
    Raw Data

    Raw Data
    Germanium (Ge):
    Flat or Wedged
    2.0 - 16 μm Uncoated -
    Raw Data
    -
    -C9 Coating, 1.9 - 6 µm
    (Only Flat)
    Ravg < 2% at 0° AOI
    Raw Data

    Raw Data
    -G Coating, 7 - 12 µm
    (Only Flat)
    Ravg < 1% at 0° AOI
    Raw Data

    Raw Data
    -E3 Coating, 7 - 12 µm
    (Only Wedged)
    Ravg < 1.0%; Rabs < 2.0% at 0° AOI
    Raw Data
    Icon
    Raw Data
    Barium Fluoride (BaF2):
    Flat 
    (Wedged BaF2 Windows Available Above)
    3 - 5 μm -E Coating, 3 - 5 µm Ravg < 2% at 0° AOI
    Raw Data

    Raw Data
    • Reflectance is given per surface and each window is coated on both sides.

    Magnesium Fluoride (MgF2) Wedged Windows, Uncoated

    Item #WW60530WW61050
    Wedge Angle 30 ± 10 arcmin
    Diameter 1/2" (12.7 mm) 1" (25.4 mm)
    Diameter Tolerance +0.0 / -0.2 mm
    Thickness 3.0 mm 5.0 mm
    Thickness Tolerance ±0.1 mm
    Clear Aperture ≥11.43 mm ≥Ø22.86 mm
    Surface Flatnessa ≤λ/16 Over Central Ø5 mm
    ≤λ/8 Over Entire Clear Aperture
    ≤λ/16 Over Central Ø10 mm
    ≤λ/8 Over Entire Clear Aperture
    Surface Quality 20-10 Scratch-Dig
    Wavelength Range 200 nm - 6.0 µm (Uncoated)
    Substrate Magnesium Fluorideb
    Transmission Data
    (Click for Graph)

    Raw Data
    • Measured at 633 nm
    • Click Link for Detailed Specifications on the Substrate
    Based on your currency / country selection, your order will ship from Newton, New Jersey  
    +1 Qty Docs Part Number - Universal Price Available
    WW60530 Support Documentation
    WW60530Ø1/2" Wedged MgF2 Window, Uncoated
    $172.06
    Today
    WW61050 Support Documentation
    WW61050Ø1" Wedged MgF2 Window, Uncoated
    $259.70
    Today
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