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Large format NBPF – a uniformity challenge

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Large format NBPF – a uniformity challenge

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Many applications, particularly those in remote environments (e.g. deployed in satellite instrumentation), require that the filters maintain their spectral performance characteristics over many years. This requires a very robust filter design and manufacturing strategy along with careful selection and treatment of materials used in production. Iridian has addressed each of these challenges and has recently demonstrated the successful design and manufacture of an environmentally stable 1.72 nm-wide (FWHM) NBPF centered near 780 nm to within 20 pm of the target over an operating clear aperture >125 mm in diameter.

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