Magnesium Fluoride (MgF₂) Optical Window

Magnesium Fluoride (MgF₂) Optical Window

Product Overview
Magnesium Fluoride (MgF₂) is an optical material used for deep ultraviolet (DUV), vacuum ultraviolet (VUV), visible, and infrared applications. It is a low-refractive-index window material and is used in UV and mid-infrared optical systems.

Transmission Range: 130–10000 nm
MgF₂ offers:
Transmission in the UV region (down to 130 nm)
Transmission in the mid-IR region (3–10 µm)
Low refractive index
stability under the stated environmental conditions
used as an IR optical window material
Optical Properties (1 mm thickness typical)
Transmission across the UV–Visible–Near IR range.
Technical Specifications
Crystal Structure: Tetragonal
Standard Orientation: (001)
Surface Finish: Polished (single-side or double-side available)
Dimensional Tolerance:
Diameter / Length tolerance: +0 / -0.1 mm
Thickness tolerance: ±0.1 mm

Optical Quality:
Parallelism: < 5 arc sec (or better)
Surface Quality: 40-20 scratch/dig (or better)
Surface Flatness: λ/4 @ 633 nm (or better)
Edge Chamfer: 0.2 mm × 45°

Available Forms:
Round windows
Square substrates
Ultra-thin wafers
Custom crystal orientation available

Applications:
Deep UV optics
Vacuum UV systems
UV laser windows
IR optical windows
Spectroscopy systems
Scientific instruments

Customization:
Custom sizes, thickness, crystal orientation, and surface specifications are available upon request.