Compact LFZ

Full-featured compact laser-heated FZ furnace with 3, 4, 5 or 7 diode lasers à 330 W and 10 bar process gas pressure

The Laser-Heated Floating Zone Furnace is a space- and resource-saving solution for advanced float zone crystal growth. This full-featured furnace is ideal for laboratories and research facilities focused on crystal growth and advanced material development. What truly sets it apart is its compact design, which not only saves valuable laboratory space but also drastically reduces the acquisition costs. Utilizing 5 independent, 330 W and 980 nm diode lasers in its standard configuration, the furnace is ready to accommodate 3, 4, or 7 lasers, depending on the user's requirements. It offers step-less power control, allowing for melting temperatures between 300 °C and 3000 °C. Standard laser beam geometries are 4 x 6 mm and 4 x 4 mm, with a sharp cut-off edge on the lower laser beam rim. The gas management system can handle pressures up to 10 bar and gas flow values between 0.1 and 1 l/min. The process observation includes a high-resolution CCD camera with HDR image optimization and precise two-color pyrometer for real-time temperature measurement. The furnace has a comfortable GUI for all PLC-based adjustments, and several advanced power ramp and travelling ramp functions are adaptable. The material rod is moved with precise linear and rotation feed-through systems, and the pulling rate can be varied from 0.1 mm/h to 200 mm/h, with a pulling length (max. crystal length) of 150 mm. Harnessing the power of laser heating technology, this advanced furnace is designed to deliver exceptional results with efficiency and convenience.