Photonics Suppliers

CASTECH is a global leader in nonlinear optical crystals, laser crystals, precision optics, and laser components for laser applications, optical communications, biomedical VR/AR, and lidar. With ISO 9001 and IAFT 16949 quality management system, we consistently enable our customers from prototype to mass production stage.

As a matured and professional global supplier with a sophisticated engineering background, we specialize in the manufacturing and sales of electro-optics, including laser crystals and components, laser mirrors, nonlinear crystals, wave plates, polarizers, optical windows and lenses, IR camera lens assemblies/optical filters, scintillators, and more.

Provides customized materials for low stress, high purity, and high uniformity infrared crystals to customers in over 60 countries and regions around the world.