We have more than 60 years’ experience in growing the widest variety of crystals.

Crystal growth takes place in custom-built furnaces, mainly using the Bridgman-Stockbarger (named after Percy Williams Bridgman and Donald C. Stockbarger) is a technique used for the production of large single crystals, like fluorides, silicon or gallium arsenide. A crucible filled with raw material powder is inserted into a furnace with different temperature zones. The raw material melts in the hotter part of the furnace. Crystallisation begins when the molten raw material is transferred into a cooler section of the oven. The seed crystals which are oriented along the axis of the crucible grow the fastest. To accelerate this process we use specially shaped crucibles. and Nacken-Kyropoulos (named after Richard Nacken and Spyro Kyropoulos) is a technique for the production of single crystals, like alkali halides or sapphires. A cooled rod is inserted into the melt for the crystal to grow on. At the beginning a polycrystalline region is formed at the rod but by reduction of the diameter of the grown material during pulling, single crystalline growth is afforded. Nowadays single crystal seeds are used. techniques. Our crystals can be provided as raw boules, cut and shaped blanks or as polished optical components.

We offer the following crystal materials (please specify the desired n-type doping):