Polarizers divide a beam of light into two highly polarized beams, making them ideal for isolation or routing of a specific polarization. Extinction ratio and power handling are important factors to consider when choosing a polarizer, particularly for laser applications. With plate and cube formats to choose from, as well as options for 45° AOI or Brewster angle operation, we have the right polarizer for your needs.
Manipulation of a laser beam based on its polarization is a commonly used technique, which is why we manufacture all of our polarizers using durable dielectric and ion beam sputtered coatings on high quality optics.
Our laser line and broadband polarizer products span the UV through near-IR, accommodating laser fluences up to 20 J/cm2
at 1064 nm (20 ns, 20Hz pulse) and extinction ratios as high as 5000:1. Our wide selection allows you to find the right combination of coating type, construction, and angle of operation to suit both your application and budget.
The most obvious use of a polarizer is purification of a beam’s polarization state and/or splitting of a beam into its s- and p-polarized components. Alternatively, it can be used to combine two beams, even at different wavelengths (if a broadband polarizer is used). When the input beams are orthogonally polarized, beam combination can be very efficient. If the input beams are unpolarized, one polarization component from each is combined, achieving effective mixing with ~50% efficiency. A polarizer can also be used in combination with a waveplate to create a passive optical isolator. Rotating the waveplate allows this assembly to work as a variable attenuator (also called a continuously variable beamsplitter).
Whether your application is simple or complex, we can work with you to find the catalog, semi-custom or custom solution you need.