Magnesium Fluoride – MgF2

Magnesium fluoride (MgF2) is an inorganic compound that is commonly used as an optical material due to its high transparency in the ultraviolet (UV), visible, and infrared (IR) regions.

It's a colourless, transparent, crystalline solid with a tetragonal crystal structure.

You can count on us for reliable MgF2 optical components - from prisms and windows to lenses, we have all you need for your specific applications.

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The physical properties of magnesium fluoride

MgF2 boasts many significant and beneficial properties, including:

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• Excellent transmission range - this impressive optical material offers a wide transmission range from the deep ultraviolet to the infrared spectrum.

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• High transparency - magnesium fluoride is transparent across a wide range of wavelengths, allowing light to pass through without substantial scattering.

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• Low refractive index - MgF2 has a low refractive index, which minimises chromatic aberration and reduces light refraction. This quality makes it an excellent material for creating optical components such as lenses, windows, and prisms.

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• High mechanical and thermal resistance - Magnesium fluoride is highly resistant to mechanical and thermal shock, making it suitable for demanding and harsh environmental conditions. Its resilience also enhances the longevity of your optical components and devices.

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• Water resistance - this optical material is resistant to water and therefore can be used for various window applications.

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Magnesium fluoride applications

MgF2 has a wide range of applications in various fields, including UV spectroscopy, laser technology, telecommunications, and astronomy.

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Magnesium fluoride is particularly advantageous for optical systems that require high clarity and reduced light distortion, which include ultraviolet imaging systems, microscopes, and astronomical telescopes.

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What's more, because it offers exceptional thermal and mechanical shock resistance, it's commonly chosen by engineers for rigorous outer space purposes.

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Due to its high transparency and low dispersion, it's also frequently utilised in the production of everyday optical elements such as camera lenses.

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One of the unique properties of MgF2 is its ability to function as a broadband anti-reflection coating when applied to optical surfaces. This property is highly beneficial in the manufacturing of optical systems where minimising reflection is critical.

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Handling magnesium fluoride

MgF2 is a brittle material that can be easily damaged under mechanical stress. It is also susceptible to chemical attack by strong acids and alkalis. Therefore, it is important to take proper precautions when handling and storing this material.

Request a bespoke quote for magnesium fluoride elements

If you require high-quality magnesium fluoride optical components for optical or photonic applications, we can help you.

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Global Optics can supply you with top-grade magnesium fluoride prisms, windows, and lenses that you can rely on.

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To find out more, don't hesitate to get in touch on 01202 767 476.