Laser Components are now supplying new UV optical filters from Omega Optical. Using a new sputter coating tool, these filters can achieve more than 80 per cent transmission with OD5 up to 700nm, allowing for the deposition of UV oxide coating material ZrO2, transmitting in the UV down to 250nm.
The filters create more than 70 per cent transmission at 350nm with a 10nm wide band. Owing to this new technology and proprietary material selection, these filters provide higher transmissions, steeper edges and deeper blocking than previously seen.
Moreover, as ZrO2 maintains a refractive index of 2.2 throughout the visible range, blocking without the use of metals can be achieved up to 700nm.
Additionally, by including a new UV gain flattening filter, extended blocking up to the FIR range can be achieved while still providing a transmission as high as 40 per cent.