UV Polarising Cube Beamsplitters
These
thin film stacks, deposited on the internal surface of a cube beamsplitter are
effective polarisers for high and low power UV applications.
The coatings are designed to provide almost total reflection of the
s-component and a very high transmission of the p-component.
They are narrow-band devices operating best at a specific wavelength and
a narrow region around it. A useful
extinction ratio 200:1 is obtained using UV fused silica prisms, optically
contacted together. This form is
suitable for laser of fluence up to 5J/cm2 (10ns).
These
beamsplitters are usually supplied as 5, 10, 15 or 20 mm cubes but other sizes
can be supplied on request.
Common
wavelengths offered are: 248, 257, 266, 308, 352, 355 and 364 nm. Others are
available so please ask.