Skip to main content

NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.

Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.

U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

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.
Citation
SPIE series

Keywords

infrared, neutral-density filter, transmittance

Citation

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)

Issues

If you have any questions about this publication or are having problems accessing it, please contact [email protected].

Created October 8, 1998, Updated November 10, 2018
Was this page helpful?