LASER COMPONENTS has for the first time developed a thin-film polarizer that makes it possible to simultaneously separate the polarizations of three wavelengths. Designed for an angle of incidence of 45°, the optics show excellent reflection properties for s-polarization in blue (450 nm), green (520 nm), and red (640 nm) light, while p-polarization is almost completely transmitted.
In optical systems, such polarizers can be used, among other things, to combine linearly polarized laser beams from several sources – regardless of whether they have the same or different wavelengths. Conversely, these types of optics make it possible to separate unpolarized light at three wavelengths into the two polarizations simultaneously.
While the manufacture of thin-film polarizers is no longer an art, trichroid polarizers present a major challenge. The complex layer design is produced in our ion beam sputtering (IBS) facility, which enables particularly compact layer structures with good reflection properties.
