MgF2 Windows

MgF2 Window

MgF2 exhibits excellent broadband transmission from 120 nm to 8 μm , from the deep UV to the mid infrared. This makes them a good choice for UV radiation sources and receivers as well as for use at the Hydrogen Lyman-alpha line. They are often used as UV viewpoints and a good option for UV polarizers and excimer laser applications. It has a high transmittance between 120 nm and 8 µm, and between 0.4-5.0 µm transmits over 90%.

MgF2 window is an optical window manufactured from crystalline Magnesium Fluoride. This hard and durable optical material is well suitable for applications under harsh conditions. It is highly resistant to chemical etching as well as mechanical and thermal shock. In addition, it also resists tohigh laser damage threshold. 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.

MgF2 has a melting point of 1255 degrees Celsius. It has a density of 3.177 g/cm3, and a tetragonal crystal type. Our optical windows are typically oriented with the round surfaces perpendicular to the c-axis of the MgF2 crystal to minimize birefringence.  Custom random cut MgF2 windows can be manufactured on request.

Wuhan Especial Optic can produce various kinds of high-precision MgF2 crystal windows and prisms, especially ultra-thin MgF2 windows, which can achieve the thickness of 0.2mm.