Magnesium Fluoride(MgF2) transmits well into the VUV region to the hydrogen Lyman-alpha line (121nm) and beyond. MgF2 is used mostly for UV optics and is excellent for Excimer laser applications.
• Wavelength Range: 200 nm - 6.0um
• Material: Vacuum Grade MgF2
Photonik' MgF2 Plano-Convex lenses are popular for many applications in the UV and IR. These lenses are an ideal choice for applications from 200 nm to 6.0um. Magnesium Fluoride is extremely durable in comparison to other materials that reach this far down into the UV or out into the IR. The C-axis is oriented to minimize birefringence.
Plano-Convex lenses have a positive focal length and approach best form for infinite and finite conjugate applications. These lenses focus a collimated beam to the back focus and collimate light from a point source. They are designed with minimal spherical aberration and have a focal length which can be calculated using a simplified thick lens equation: f= R/(n-1), where n is the index of refraction and R is the radius of curvature of the lens surface. To minimize the introduction of spherical aberration, a collimated light source should be incident on the curved surface of the lens when being focused and a point light source should be incident on the planar surface when being collimated.