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AI Overview
Magnesium fluoride () crystal windows are a primary choice for vacuum ultraviolet (VUV) and deep ultraviolet (DUV) applications because they offer high transmission starting at 110–120 nm. This includes the critical Hydrogen Lyman-alpha line (121.6 nm) and ArF excimer laser wavelengths (193 nm).
Optical & Material Properties
MgF2 is a rugged, birefringent material known for its extreme durability compared to other fluoride crystals like CaF2.
- Transmission Range: ~110 nm (VUV) to ~7.5 μm (Mid-IR).
- VUV Efficiency: Typically provides >50% transmission at 120 nm.
- Birefringence: As a positive uniaxial crystal, windows are usually c-cut (optic axis parallel to the optical axis) to minimize birefringent effects.
- Durability: High resistance to mechanical shock, thermal fluctuations, and chemical etching.
- Refractive Index: Low index (~1.38 at 632.8 nm), making it efficient even without anti-reflection coatings.
Typical Applications
- Excimer Lasers: High damage threshold for ArF (193 nm) and KrF (248 nm) systems.
- VUV Spectroscopy: Used in analytical instruments and synchrotron radiation beamlines.
- Space Optics: Ideal for UV detectors and astronomical telescopes due to radiation resistance.
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Web results
MgF2 crystal window for VUV or UV
HG Optronics.,INC.
https://www.hgoptronics.com › mgf2-crystal-window-f...
HG Optronics.,INC.
https://www.hgoptronics.com › mgf2-crystal-window-f...
MgF2 or Magnesium Fluoride is positive uni-axial crystal with a very high optical transmittance from the vacuum UV to IR. It is regularly used for optical ...Read more
ISP Optics Magnesium Fluoride (MgF 2 ) Windows
Edmund Optics
https://www.edmundoptics.com › isp-optics-magnesium...
Edmund Optics
https://www.edmundoptics.com › isp-optics-magnesium...
ISP Optics Magnesium Fluoride (MgF2) Windows feature a low refractive index and high transmission making them ideal for DUV applications.
Magnesium Fluoride MgF2 - Optical Materials
Crystran
https://www.crystran.com › Optical Materials
Crystran
https://www.crystran.com › Optical Materials
Magnesium Fluoride transmits well into the VUV region to the hydrogen Lyman-alpha line (121nm) and beyond. Magnesium Fluoride is used mostly for UV optics ...Read more
The Strengths of Magnesium Fluoride in UV Optics
Fairfield Crystal
https://fairfieldcrystal.com › the-strengths-of-magnesiu...
Fairfield Crystal
https://fairfieldcrystal.com › the-strengths-of-magnesiu...
Dec 13, 2024 — One of the sought after properties of MgF2 is its superior transmission range from IR to UV wavelengths, even extending to vacuum- UV region.Read more
Magnesium Fluoride: MgF2 windows, MgF2 lenses
Alkor Technologies
https://alkor.net › MgF2
Alkor Technologies
https://alkor.net › MgF2
MgF2 transmits well into the DUV / VUV region at the hydrogen Lyman-alpha line (121nm) and beyond. MgF2 windows and lenses are also used for most UV optics and ...Read more
Magnesium Fluoride (MgF2) Windows & Plates
UQG Optics
https://www.uqgoptics.com › ... › UV-IR Crystals
UQG Optics
https://www.uqgoptics.com › ... › UV-IR Crystals
UQG Optics Magnesium Fluoride (MgF2) windows are polycrystalline VUV grade and have a superior UV transmission range from 120nm to 7 microns.Read more
High DUV transmission MgF2 window
CRYSMIT OPTICS
https://www.crysmit.com › MgF2-Window
CRYSMIT OPTICS
https://www.crysmit.com › MgF2-Window
MgF2 window is transparent in the ultraviolet (UV) range and is commonly used in optical systems for UV and infrared (IR) applications.
Magnesium Fluoride (MgF2) Optical Windows
Firebird Optics
https://www.firebirdoptics.com › optical-windows › mag...
Firebird Optics
https://www.firebirdoptics.com › optical-windows › mag...
Magnesium Fluoride or MgF2 has a superior transmission range of 120nm to 7μm, which covers all the way from the deep UV into the midwave-IR range.Read more
$534.00In stock$15 delivery
Magnesium Fluoride Mgf2 Windows Uncoated
UNI Optics
https://www.uni-optics.com › magnesium-fluoride-mgf2-...
UNI Optics
https://www.uni-optics.com › magnesium-fluoride-mgf2-...
Magnesium Fluoride Windows applicable for wide range spectrum, transmits well into the VUV region at the hydrogen Lyman-alpha line and beyond and it is ...Read more
Discussions and forums
How transparent are thin MgF2 & CaF2 substrates at ~100nm wavelength ...
ResearchGate ·Â
6 years ago
How transparent are thin MgF2 & CaF2 substrates at ~100nm wavelength ...
ResearchGate ·Â
6 years ago
What chemical is best for etching MgF2? - Factual Questions
Straight Dope Message Board ·Â
14 years ago
What chemical is best for etching MgF2? - Factual Questions
Straight Dope Message Board ·Â
14 years ago
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Web results
VUV UV Grade Windows
eSource Optics
http://www.esourceoptics.com › vuvwindows
eSource Optics
http://www.esourceoptics.com › vuvwindows
Magnesium Fluoride: VUV Grade Magnesium Fluoride (MgF2) exhibits high transmission properties from ~ 110nm Vacuum UV (VUV) to ~ 6.0um in the Infrared. MgF2 is a ...Read more