BBARs For Telescope And Imaging Systems
Below are some featured Coatings where customers wanted deviations from the standard, straight forward, visible Broad Band Anti Reflective coating
UV Extended Broad Band AR -BBAR R<0.5% 370nm; Rav<0.3% 360-675nm; @0±20º
Astronomers are continually trying to get a better understanding of our Universe and ask for a wider range outside of the visible spectrum. For example, this design was driven by an Astronomer who desired to reduce reflectivity at 370nm, just outside of the traditional Photopic spectrum, in order to study Binary Star Systems
Broad Band And V Coating Combinations Rav<0.5% 440-680nm; R<0.5% 1064nm; R<0.5% 1550nm; @0±10º
For Military applications we have been asked to push the limits of the traditional visible BBAR and incorporate low reflection at both, common NIR wavlengths, 1064nm and 1550nm
Multi Broad Band AR Coating Combinations; Rav<0.5% 600-700nm; R<0.5% 1450-1650nm; @0±10º
Multi Broadband AR coatings operate over two or more spectral bands. In most cases, it involves visible plus one or more bands in IR. This plot shows a spectral response of a 2-band AR coating designed to operate over, spectral bands, covering 600-700nm and 1450-1650nm. This coating is commonly used in applications where a red lasers or laser diode is used for alignment of telecom S-, C-, and L- band laser lines