Many options of coatings are available:

-   Anti-reflection coating:

        - V coating: any wavelength, R < 0.2%
        - Broadband (R average : 0.35 to 0.7 %):

                - 400-700 nm

                - 650-1100 nm

                - 800-1300 nm

                - 500-1100 nm  

-  Beamsplitter:

        - R = 10%, T = 90% to R = 99%, T = 1% for specific wavelength or band

-   Dichroic:

        - Short wave pass  R > 99%   T > 95%
        - Long wave pass R > 99%   T > 98%