Phase shifting mirrors for CO2 lasers for cutting applications
In laser cutting applications using CO2 lasers, circularly polarised light can be used for example to achieve a uniform and axis independent cut. One way of achieving circularly polarised light at 10.6um is to use a phase shifting mirror.
Through use of a coating which can be applied to both copper and silicon substrates, circular polarisation is achieved by a λ/4 phase shift of the incident linearly polarised light.
LASER COMPONENTS can manufacture phase shifting mirrors in customer specified dimensions, radii of curvature, wavelengths and retardations.