Magnesium fluoride is widely used in excimer lasers of argon fluoride, krypton fluoride and xenon chloride because of its high transmission rate, long service life and low light energy loss. Theoretically and experimentally, it is proved that the more ultraviolet wavelength lasers have higher material requirements, which means that the magnesium fluoride materials used in these three wavelength lasers can be different. As the world’s leading supplier of magnesium fluoride crystals, we have a good understanding of the material requirements for excimer lasers at different wavelengths.

The extreme ultraviolet magnesium fluoride material must be high purity material, and the crystal growth process must be controlled by atmosphere to obtain higher transmittance, and because of the complexity of the photoion welding process, the crystal orientation, microstructure, lens processing and annealing requirements are extremely demanding. We are currently the world’s leading supplier of this product, specializing not only in materials but also in applications.

Magnesium fluoride is a tetragonal crystal system, characterized by each anisotropy. So it must be considered as single crystal in precision imaging and signal transmission.
The main dissociation plane of magnesium fluoride is 110, but the smallest birefringence is 001 plane. Single crystal means the direction is random, it may be 110,100,001 or other direction; this varies a lot in practical application. If the customer does not specify the direction, the intrinsic crystals are processed according to the direction.

The barium fluoride products applied in the UV band require no obvious absorption in the range of 200-400NM, and the crystal structure can be single crystal or polycrystalline. The UV barium fluoride obtained is often related to the raw material, crystal growth preparation and crystal doping, but the finished crystals should meet ROHS & REACH requirements.

The phase delay caused by the deflection of the phase of light through a diphasic or multidirectional material is called phase delay; barium fluoride materials are tetragonal and isotropic, but there are still subtle differences in different directions, so a lower phase delay is required to obtain an accurate monitoring signal. The specific material and processing of intrinsic crystals can guarantee your isotropic requirements

Barium fluoride crystals larger than 120 mm in size can be monocrystalline or polycrystalline. We can provide 50 pieces of polycrystalline barium fluoride material of D140*30mm per month, the maximum size of polycrystal can reach 320mm; 100 pieces of monocrystalline material of D100*20mm per month, the maximum size of monocrystal is D130mm.