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Applied Optics

Applied Optics


  • Vol. 28, Iss. 18 — Sep. 15, 1989
  • pp: 4024–4029

Polarization modulation high resolution Fourier transform spectroscopy

Mohammed Elhanine, Robert Farrenq, and Guy Guelachvili  »View Author Affiliations

Applied Optics, Vol. 28, Issue 18, pp. 4024-4029 (1989)

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A new polarization modulation Zeeman method combined with high resolution Fourier transform spectroscopy is described. It selectively detects the paramagnetic species produced in a plasma under a constant magnetic field. The polarizing optics is convenient and easily covers wide spectral ranges. NO absorption and N2O, NO emission spectra are reported. With a magnetic field of the order of 560 G and a 40-cm long discharge tube, the P and R lines of the 1—0 band of NO around 5 μm are observed up to J = 28.5 whereas the much more intense N2O lines are not detected. Unexplained line shapes of the first Q2 lines of NO are reported. A comparison with a recent frequency modulation Zeeman method coupled with high resolution Fourier transform spectroscopy is given.

© 1989 Optical Society of America

Original Manuscript: November 28, 1988
Published: September 15, 1989

Mohammed Elhanine, Robert Farrenq, and Guy Guelachvili, "Polarization modulation high resolution Fourier transform spectroscopy," Appl. Opt. 28, 4024-4029 (1989)

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  1. See, for example, Technical Digest of Topical Meeting on High Resolution Transform Spectroscopy (Optical Society of America, Washington, DC, 1989).
  2. P. Chollet, G. Guelachvili, M. Morillon-Chapey, P. Gressier, J. P. M. Schmitt, “High-Information Infrared Spectroscopy of Unstable Molecules,” J. Opt. Soc. Am.B 3, 687–695 (1986). [CrossRef]
  3. P. Jensen, W. P. Kraemer, “A Variational Calculation of the Rotation–Vibration Energies for CNC+ and CCN+,” J. Mol. Spectrosc. 129, 216–222 (1988). [CrossRef]
  4. G. Guelachvili, “Selective Detection of Paramagnetic Species by High-Information Fourier-Transform Spectrometry,” J. Opt. Soc. Am. B 3, 1718–1721 (1986). [CrossRef]
  5. M. Elhanine, R. Farrenq, G. Guelachvili, “Zeeman-Modulation Fourier Transform Spectroscopy,” Mikrochim. Acta (Wien) II, 265–269 (1988). [CrossRef]
  6. C. M. Deeley, J. W. C. Johns, Herzberg Institute of Astrophysics; private communication.
  7. For more details see M. Elhanine, “Spectroscopies sélectives par transformation de fourier et laser à diodes. Etude infrarouge de molécules transitoires” Thèse N°970 Orsay (1989).
  8. G. Guelachvili, “High-Accuracy Doppler-Limited 106 Samples Fourier Transform Spectroscopy,” Appl. Opt. 17, 1322–1326 (1978). [CrossRef] [PubMed]
  9. J. T. Hougen, “The Calculation of Rotational Energy Levels and Rotational Line Intensities in Diatomic Molecules,” Natl. Bur. Stand. U.S. Monogr.115 (1970).
  10. H. E. Radford, “Microwave Zeeman Effect of Free Hydroxyl Radicals,” Phys. Rev. 122, 114–130 (1961). [CrossRef]
  11. R. L. Brown, H. E. Radford, “L-Uncoupling Effects on the Electron-Paramagnetic-Resonance Spectra of 14N16O and 15N16O,” Phys. Rev. 147, 6–12 (1966). [CrossRef]
  12. C. Amiot, R. Bacis, G. Guelachvili, “Infrared Study of the X2П υ = 0,1,2 Levels of 14N16O. Preliminary Results on the υ = 0,1 Levels of 14N17O, 14N18O and 15N16O,” Can. J. Phys. 56, 251– 265 (1978). [CrossRef]
  13. L. A. Nafie, N. S. Lee, G. Paterlini, T. B. Freedman, “Polarization Modulation Fourier Transform Infrared Spectroscopy,” Mikrochim. Acta (Wien) III, 93–104 (1988).
  14. W. Hermann, W. Rohrbeck, W. Urban, “Lineshape Analysis for Zeeman Modulation Spectroscopy,” Appl. Phys. 22, 71–75 (1980).
  15. C. C. Lin, M. Mizushima, “Theory of the Hyperfine Structure of the NO Molecule. II. Errata and Some Additional Discussions,” Phys. Rev. 100, 1726–1730 (1955). [CrossRef]
  16. M. Elhanine, R. Farrenq, G. Guelachvili, M. Morillon-Chapey, “Negative Ion SH−: The Vibration Rotation Bands Between 2200 and 2750 cm−1 by Fourier Transform Spectroscopy,” J. Mol. Spectrosc. 129, 240–242 (1988). [CrossRef]
  17. R. J. Saykally, “Infrared Laser Spectroscopy of Molecular Ions,” Science 329, 157–161 (1988). [CrossRef]

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