Beamsplitters and plate polarisers

Precision Photonics Corporation has introduced a new family of high-energy plate polarisers and beamsplitter cubes for UV applications. These components benefit from PPC’s dense ion-beam-sputtered (IBS) coating technology and its robust, epoxy-free bonding technology – chemically activated direct bonding (CADB) – resulting in laser damage thresholds in excess of 2J/cm2 at 355nm. In addition to being able to withstand high powers, PPC’s polarisers and polarising beamsplitters exhibit transmitted wavefront distortions of less than l/10 p-v at 633nm and transmitted extinction ratios of up to 1000:1.

The family of standard polarising beamsplitter cubes includes laser-line versions at 1064, 532 and 355nm, with custom versions available from 266 to 2200nm, and in sizes from 1mm3 to 2.5cm. The thin-film plate polarisers are available at both Brewster’s angle and 45 degree incidence angles. These polarisers are environmentally robust and do not have to be angle-tuned. Both product types are durable, easy to clean and easy to align, making them ideal for intra-cavity and extra-cavity applications where fluences are greater than 500 mJ/cm2.