Abstract

Absorption and complete multipath interference have been included in the calculation of the modulation efficiency of a far i.r. Michelson interferometer with 25-μm and 100-μm Mylar beam splitters over the range of wavenumbers between 20 cm−1 and 125 cm−1 for angles of incidence between 45° and 80°. These results show that optimum performance of an interferometer in terms of highest and most uniform modulation efficiency for unpolarized radiation will be obtained by selecting the beam-splitter thickness to cover the wavenumber range of interest within the first interference lobe and by utilizing higher angles of incidence than the mechanically convenient 45°. Practical constraints will usually limit this angle to a value somewhat less than the optimum of about 75° for Mylar beam splitters.

© 1978 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Instrumentation Optimization in Fourier Spectroscopy. 1: Far Infrared Beam Splitters

J. L. Deuzé and A. L. Fymat
Appl. Opt. 13(8) 1807-1813 (1974)

New designs for far-infrared beam splitters

J. A. Dobrowolski and W. A. Traub
Appl. Opt. 35(16) 2934-2946 (1996)

Far-infrared thin-film beam splitters: calculated properties

Donald R. Smith and Ernest V. Loewenstein
Appl. Opt. 14(10) 2473-2475 (1975)

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 (2)

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

Equations (5)

You do not have subscription access to this journal. Equations 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