Magnesium Fluoride (MgF2) windows

MgF2 optical window

MgF2 window known as optical window crafted from crystalline Magnesium Fluoride.

This robust and resilient optical material is particularly suited for operation in demanding environments. It boasts remarkable resistance to chemical etching, mechanical stress, and thermal fluctuations, along with a high threshold for laser damage.

YREMOPtics MgF2 windows provides outstanding transmission spanning from deep within the ultraviolet range to the mid-infrared spectrum. MgF2 windows exhibit exceptional durability and introduce negligible aberrations. MgF2 windows can be manufactured in various shapes and sizes, depending on their intended use.Here is a standard examples of manufacturing in stock:

MgF2 Windows
Available Diameter (inch) Thickness (mm)
3,5 1,0; 2,0; 3,0
5,0
10,0
12,7
20,0
25,4
Size Tolerance +0.0 / – 0.05mm
Thickness Tolerance + / – 0.1mm
Wavelength Range(Uncoated) 200 nm – 6.0 μm
Clear Aperture >90%
Parallelism 5 arc min
Surface Quality 40-20
Bevel available
Optical Properties:

  1. High Transmission: MgF2 windows exhibit high transmission in the UV spectral range. This makes them suitable for UV applications where optical transparency is crucial.

  2. Low Dispersion: MgF2 has low dispersion characteristics, allowing for minimal distortion of light rays passing through the window. This property is advantageous in optical systems requiring precise imaging and spectral analysis.

  3. Chemical Stability: MgF2 is chemically stable and resistant to most acids, bases, and corrosive chemicals. This stability ensures the longevity of MgF2 windows in harsh environments.

  4. Thermal Stability: MgF2 windows possess good thermal stability, allowing them to withstand temperature variations without significant changes in optical performance. This property is essential in applications where temperature fluctuations are common.