Visible Polarizers

Produces custom, high-damage threshold, long lifetime laser optics including mirrors, polarizers, beamsplitters, and windows. Specializes in coatings from 193 nm to 2 microns. Materials include CaF2, MgF2, FS, and BK7. Supplier to linear accelerators using ultrafast, excimer, and solid-state laser systems worldwide.

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 dichroic glass polarizers for the UV, VIS, NIR, and MIR spectral range. Also produces patterned polarizers that have arbitrary shaped areas with different directions of polarization.

Manufacturer of precision optical components and high-power laser coatings from UV to IR. Stock and custom optics: lenses, beamsplitters, filters, windows, mirrors, wave plates, large wedges, prisms, and many more. In-house custom coatings: AR, high reflection, dichroic, and polarizing. Optics from 4 mm to 16 inches.

Manufacturer of optical filters and coatings for many demanding applications such as: biomedical instruments and imaging systems, fluorescence microscopy, aerospace, surveillance, machine vision, industrial inspection such as semiconductors, food and lumber, multispectral imaging, and chemical analysis. Employee-owned.