Transmission ≥94% for λ = 200 nm - 6 µm Magnesium Fluoride (MgF2) Windows φ5-100mm

Transmission ≥94% for λ = 200 nm - 6 µm Magnesium Fluoride (MgF2) Windows φ5-100mm

Magnesium Fluoride (MgF2) Windows offer excellent broadband transmission from the deep-UV to the mid-infrared. DUV transmission makes them ideal for use at the Hydrogen Lyman-alpha line and for UV radiation sources and receivers, as well as excimer laser applications. MgF2 is a rugged material resistant to chemical etching, laser damage, and mechanical and thermal shock. It has a Knoop Hardness of 415 and index of refraction of 1.38.

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' MgF2 windows 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.

offers flat windows fabricated from N-BK7, UV Fused Silica, Sapphire, Calcium Fluoride, Magnesium Fluoride, Potassium Bromide, Infrasil, Zinc Selenide, Silicon, Germanium, or Barium Fluoride. Our laser windows have a wavelength-specific AR coating centered around commonly used laser wavelengths and an optional wedge, while our precision windows are offered with or without a broadband AR coating. For more information on these substrates,

Map Optics Technology provides a variety of flat Windows with no coating and anti-reflection coating substrates.

• Available Uncoated or with One of Three Broadband AR Coatings
• • 350 - 700 nm (-A Coating Designation)
  • 650 - 1050 nm (-B Coating Designation)
  • 1050 - 1700 nm (-C Coating Designation)

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