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.

Manufacturer of InGaAs sensors. Offers SWIR image sensors and linear sensors, PIN photodiodes and APDs with a wavelength of 900 to 1700 nm. We offer visible and extended wavelength InGaAs products for the applications of power monitoring, imaging, semiconductor inspection, spectrometer, sorting, HSI, and remote sensing. Excellent quality at a reasonable price.

Optical devices supplier and manufacturer of acousto-optic modulators, acousto-optic frequency shifter, avalanche photodiodes, fiber coil and ASE source, couplers, isolator, circulator, FRM, WDM, narrow linewidth laser diode, semiconductor optical amplifier, EDFA, used for for fiber laser, sensor systems, and FOG.

Custom optics, such as spherical lenses, dome lenses, prisms, windows, filters, cylindrical lenses, aspherical lenses, mirrors, beamsplitters, optical assemblies. Also custom lens design and optical systems design.

Develops and manufactures high-power diode laser components and materials (photon generation), laser optics (photon control), photonic application modules, assemblies, and subsystems (photonics application solutions) with a focus on automotive, pan-semiconductor, and medical and health application solutions.

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.

Designs, develops, and manufactures a wide array of durable thin-film optical coatings in the UV, VIS, and IR (3 to 12 microns) region. Manufactures high-precision optical windows, spherical and aspherical lenses, wedges, prisms, and infrared domes in bulk volumes.

Specializes in laser information application fields. Products cover semiconductor lasers, fiber lasers, solid-state lasers and related laser application systems. Offers customized products and production services.