THE USE OF METALLIC MESH IN A FAR INFRARED MICHELSON INTERFEROMETER$^{\ast}$

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1962

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Ohio State University

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The advantages and disadvantages of dielectric films, thin metallic films, and metal mesh as the dividing plate of a far infrared Michelson interferometer is discussed. A Michelson interferometer using a dielectric splitting plate has been used with success by Gebbie1 in the far infrared. An interferometer is described here using a metal mesh dividing plate and its performance is illustrated in the 100-300 microns wavelength region. It is proposed that the interferometer be used as an interference modulator in an infrared spectrometer. The use of the interferometer in the measurement of the index of refraction of thin sheet material is illustrated.

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∗ This investigation was carried out under a contract between The Air Force Cambridge Research Laboratories and The Ohio State University Research Foundation. † Presently on leave at Physikalisches Institut der Universit""{a}t Freiburg i. Br., Germany. 1 H. A. Gebbie Submillimeter Wave Spectroscopy Using a Michelson Interferometer, in Advances in Quantum Electronics edited by Jay R. Singer Columbia University Press, New York, 1961.


Author Institution: Laboratory of Molecular Spectroscopy and Infrared Studies, Department of Physics and Astronomy, The Ohio State University

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http://hdl.handle.net/1811/14488

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Abstracts of OSU International Symposium on Molecular Spectroscopy 1960-1969