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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 24, Iss. 24 — Dec. 15, 1985
  • pp: 4489–4492

Submillimeter and millimeter wave characterization of absorbing materials

Hamid Hemmati, John C. Mather, and William L. Eichhorn  »View Author Affiliations


Applied Optics, Vol. 24, Issue 24, pp. 4489-4492 (1985)
http://dx.doi.org/10.1364/AO.24.004489


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Abstract

Several microwave absorbers have been characterized in terms of transmittance and reflectance at frequencies between 35 GHz and 3 THz. The materials studied were a series of iron-loaded cast epoxy absorbers known as Eccosorb. Measurements show that reflectance and absorption coefficient increase with the iron density. A dramatic decrease, by as much as a factor of 2, in absorption coefficient was observed when the samples were cooled from ambient to cryogenic temperatures. A blackbody calibrator to be operated at liquid helium temperature was constructed using the measured optical constants for these absorbers. The measured absorption coefficient for cold Eccosorb CR-110 is within 20% of that reported recently by Peterson and Richards.

© 1985 Optical Society of America

History
Original Manuscript: May 10, 1985
Published: December 15, 1985

Citation
Hamid Hemmati, John C. Mather, and William L. Eichhorn, "Submillimeter and millimeter wave characterization of absorbing materials," Appl. Opt. 24, 4489-4492 (1985)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-24-24-4489


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References

  1. J. C. Mather, “The Cosmic Background Explorer (COBE),” Opt. Eng. 21, 769 (1982). [CrossRef]
  2. G. J. Simonis, “Index to Literature Dealing with the Near-Millimeter Wave Properties of Materials,” Int. J. Infrared Millimeter Waves 4, 439 (1982). [CrossRef]
  3. J. R. Birch, “Optical Constants of Some Commercial Microwave Materials Between 90 and 1200 GHz,” IEE Proc. 130, 327 (1983).
  4. M. N. Afsar, K. J. Button, “Millimeter and Submillimeter Wave Measurements of Complex Optical and Dielectric parameters of Materials I,” Int. J. Infrared Millimeter Waves 2, 1029 (1981). [CrossRef]
  5. G. J. Simonis et al., “Characterization of Near-Millimeter Wave Materials by Means of Non-dispersive Fourier Transform Spectroscopy,” Int. J. Infrared Millimeter Waves 5, 57 (1984). [CrossRef]
  6. J. R. Birch, J. D. Dromey, J. Lesurp, “The Optical Constants of some Common Low Loss Polymers Between 4 and 40 cm−1,” Infrared Phys. 21, 225 (1981). [CrossRef]
  7. M. N. Afsar, K. J. Button, “Millimeter and Submillimeter Wave Measurements of Complex Optical and Dielectric Parameters of Materials II,” Int. J. Infrared Millimeter Waves 2, 1029 (1981). [CrossRef]
  8. Emerson, Cuming, Canton, Mass., “High-Loss Dielectric Microwave Absorbers,“ Technical Bulletin, 2-6 (Revised 1980).
  9. W. T. Welford, R. Winston, The Optics of Nonimaging Concentrators (Academic, New York, 1978).
  10. C. M. Randall, R. D. Rancliffe, “Refractive Indices of Germanium, Silicon, and Fused Quartz in the Far InR,” Appl. Opt. 6, 1889 (1967). [CrossRef] [PubMed]
  11. K. R. Armstrong, F. J. Low, “New Techniques for Far Infrared Filters,” Appl. Opt. 12, 2007 (1973). [CrossRef] [PubMed]
  12. J. Ibruegger, “Transmission of Room Temperature Radiation by Materials at Low Temperatures,” Int. J. Infrared Millimeter Waves 5, 655 (1984). [CrossRef]
  13. J. B. Peterson, P. L. Richards, “A Cryogenic Blackbody for Millimeter Wavelengths,” Int. J. Infrared & Millimeter Waves 5, 1507 (1984). [CrossRef]
  14. J. P. Peterson, P. L. Richards, T. Timusk, “Spectrum of the Cosmic Background at Millimeter Wavelengths,” Phys. Rev. Lett. 55, 332 (1985). This reference corrects the stated sample thicknesses in Ref. 13. [CrossRef] [PubMed]

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