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Characterization of High-OD Ultrathin Infrared Neutral Density Filters
Published
Author(s)
Simon G. Kaplan, Leonard M. Hanssen, Alan L. Migdall, G Lefever-Button
Abstract
We have performed transmittance measurements of metal-film neutral density filters on ultrathin polymer substrates using both Fourier-transform infrared spectrometer and laser-based (3.39 mm and 10.6 mm) systems. The use of ultrathin substrates, free of etaloning effects over the 2 mm to 20 mm spectral range, allows the FT-IR and laser measurements to be directly compared. We discuss the evaluation of the uncertainties in the transmittance values in both types of systems.
Kaplan, S.
, Hanssen, L.
, Migdall, A.
and Lefever-Button, G.
(1998),
Characterization of High-OD Ultrathin Infrared Neutral Density Filters, SPIE series, [online], https://doi.org/10.1117/12.326679
(Accessed October 15, 2025)