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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 50, Iss. 12 — Dec. 1, 1960
  • pp: 1163–1165

Interferometric Spectra of Ammonia and Carbon Monoxide in the Far Infrared

ERNEST V. LOEWENSTEIN  »View Author Affiliations

JOSA, Vol. 50, Issue 12, pp. 1163-1165 (1960)

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Spectra of NH3, NH2D, and CO have been obtained interferometrically, using the large lamellar grating interferometer at The Johns Hopkins University. The CO spectrum is used to illustrate the technique, and to show that some information may be obtained directly from the interferograms, without recourse to a numerical Fourier transformation. The spectrum of NH3 shows pure rotation and inversion transitions in ν2 vibrational fundamental.

ERNEST V. LOEWENSTEIN, "Interferometric Spectra of Ammonia and Carbon Monoxide in the Far Infrared," J. Opt. Soc. Am. 50, 1163-1165 (1960)

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  1. J. Strong and G. A. Vanasse, J. Opt. Soc. Am. 49, 844 (1959).
  2. J. Strong and G. A. Vanasse, J. Opt. Soc. Am. 50, 113 (1960).
  3. See, for example, R. B. Blackman and J. W. Tukey, The Measurement of Power Spectra (Dover Publications, New York, 1958), p. 71. This situation is analogous to the case of the diffraction grating. If monochromatic radiation is incident upon two gratings of different spacing, then the separation of the orders will be greater in the case of the grating of smaller spacing.
  4. G. Trevor Williams, J. Opt. Soc. Am. 49, 1138 (1959).
  5. G. Trevor Williams "Direct Determination of Line Shapes of Rotational Spectra from Interferometric Measurements," Technical Report AFOSR-TN-60-349, The Johns Hopkins University, September 30, 1959.
  6. C. H. Townes and A. L. Shawlow, Microwave Spectroscopy (McGraw-Hill Book Company, Inc., New York, 1953).
  7. J. Garing, H. H. Nielsen, and N. K. Rao, J. Mol. Spectroscopy 5, 496 (1959).
  8. W. S. Benedict, E. K. Plyler, and E. D. Tidwell, J. Research Natl. Bur. Standards 61, 123 (1958).
  9. E. D. Palik and E. E. Bell, J. Chem. Phys. 26, 1093 (1957).

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