Polarization components are used to separate a beam of light into its orthogonal polarization states for isolation or routing. Our catalog includes both cube and plate polarizers designed to perform under a range of operating conditions, including high power, broad bandwidth, low dispersion, and high extinction. This is achieved using ion beam sputtered and e-beam dielectric coatings, some capable of greater than 1000:1 extinction ratio. When combined with our precision manufacturing, they result in laser quality plate polarizers with better than λ/8 transmitted wavefront error, and 10 – 5 surface quality.
Standard and laser quality polarizing cube beamsplitters available from the catalog use one of several contacting technologies: optical contacting, optical adhesive contacting, or our own Chemically Activated Direct Bonding™ (CADB®). All have antireflection coatings for maximum throughput.
All of these options and more are available when you consider a custom polarizer design. Not only can we work in other materials and at larger or smaller dimensions, but we can optimize the wavelength of the coating to your specific application, or design it for low absorption. Custom polarizing beamsplitter cubes can be manufactured with very high precision angular tolerance and low transmitted wavefront error to minimize impact on the transmitted beam. As in our catalog line, we can design both plate and cube polarizers to operate at either the Brewster angle or 45° angle of incidence. Let us work with you to find the right combination of coating type, construction, and angle of operation to balance your application and budget.