Abstract

The accurate measurement of transmittance characteristics of optical filters in the IR region of the spectrum is a demanding application for an IR spectrometer. We have demonstrated that the well known advantages of the Fourier transform IR spectrometer (FT-IR) can be utilized for this application. Measurements using FT-IR may be made faster and with better SNR than with dispersive instruments. In addition, the measurements have an optical precision that is superior in wavelength accuracy and equal to, or better, in transmittance accuracy. Instrumental parameters and test procedures necessary to obtain reliable and reproducible data are discussed in detail. The spectral characteristics of filters in both the near- and mid-IR regions are presented, covering a total range from 1–50 μm (10,000–200 wavenumbers). The types of optical filters examined included those with narrow and wide bandpass, and shortpass characteristics.

© 1990 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Testing the radiometric accuracy of Fourier transform infrared transmittance measurements

S. G. Kaplan, L. M. Hanssen, and R. U. Datla
Appl. Opt. 36(34) 8896-8908 (1997)

Far Infrared Bandpass Filters and Measurements on a Reciprocal Grid

G. M. Ressler and K. D. Möller
Appl. Opt. 6(5) 893-896 (1967)

High-accuracy spectrometer for measurement of regular spectral transmittance

F. Manoochehri and E. Ikonen
Appl. Opt. 34(19) 3686-3692 (1995)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (7)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription