Abstract

The interferometer of the Fourier transform spectrometer at the University of Oulu has been modified so that the maximum instrumental resolution is better than 10−3 cm−1. The resolution of the previous interferometer was 4.5 × 10−3 cm−1. The present interferometer consists of large cube corner mirrors and a large Mylar beam splitter. Each corner mirror has been made with three flat mirrors on an adjustable supporting frame. The interferometer was already in practical use in 1985. The first spectra (H2O, CO2, N2O, OCS) recorded on this interferometer have been presented in HANDBOOK OF INFRARED STANDARDS WITH SPECTRAL MAPS AND TRANSITION ASSIGNMENTS BETWEEN 3 AND 2600 μm, G. Guelachvili and K. Narahari Rao, Eds. (Academic, New York, 1986).

© 1991 Optical Society of America

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References

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  1. J. Kauppinen, “Double-Beam High Resolution Fourier Spectrometer for the Far Infrared,” Appl. Opt. 14, 1987–1992 (1975).
    [CrossRef] [PubMed]
  2. J. Kauppinen, “A High Resolution Fourier Transform Spectrometer for the Far Infrared and Investigations on the use of the Fourier Method,” Acta Univ. Oulu A 38, 31 (1975).
  3. J. Kauppinen, “Working Resolution of 0.010 cm−1 Between 70 cm−1 and 1200 cm−1 by a Fourier Spectrometer,” Appl. Opt. 18, 1788–1796 (1979).
    [CrossRef] [PubMed]
  4. J. Kauppinen, V.-M. Horneman, Report Series, Turku-FTL-R174 (1989).
  5. J. Kauppinen, V.-M. Horneman, “Cube Corner Interferometer with the Resolution of about 0.001 cm−1,” in Ninth Colloquium on High Resolution Molecular Spectroscopy, Riccione, Italy, 16–20 Sept. 1985.
  6. J. Kauppinen, “Perfect Optical Alignment of a Very High Resolution Cube Corner Interferometer,” in Ninth International Conference on High Resolution Infrared Spectroscopy, Liblice, Czechoslovakia, 8–12 Sept. 1986.
  7. M. V. R. K. Murty, “Some More Aspects of the Michelson Interferometer with Cube Corners,” J. Opt. Soc. Am. 50, 7–10 (1960).
    [CrossRef]
  8. J. Kauppinen, V.-M. Horneman, in Handbook of Infrared Standards with Spectral Maps and Transition Assignments Between 3 μm and 2600 μm, G. Guelachvili, K. Narahari Rao, Eds. (Academic, New York, 1986).
  9. J. Kauppinen, P. Saarinen, “Line Shape Distortions in Misaligned Cube Corner Interferometers,” submitted to Appl. Opt.

1979 (1)

1975 (2)

J. Kauppinen, “Double-Beam High Resolution Fourier Spectrometer for the Far Infrared,” Appl. Opt. 14, 1987–1992 (1975).
[CrossRef] [PubMed]

J. Kauppinen, “A High Resolution Fourier Transform Spectrometer for the Far Infrared and Investigations on the use of the Fourier Method,” Acta Univ. Oulu A 38, 31 (1975).

1960 (1)

Horneman, V.-M.

J. Kauppinen, V.-M. Horneman, Report Series, Turku-FTL-R174 (1989).

J. Kauppinen, V.-M. Horneman, “Cube Corner Interferometer with the Resolution of about 0.001 cm−1,” in Ninth Colloquium on High Resolution Molecular Spectroscopy, Riccione, Italy, 16–20 Sept. 1985.

J. Kauppinen, V.-M. Horneman, in Handbook of Infrared Standards with Spectral Maps and Transition Assignments Between 3 μm and 2600 μm, G. Guelachvili, K. Narahari Rao, Eds. (Academic, New York, 1986).

Kauppinen, J.

J. Kauppinen, “Working Resolution of 0.010 cm−1 Between 70 cm−1 and 1200 cm−1 by a Fourier Spectrometer,” Appl. Opt. 18, 1788–1796 (1979).
[CrossRef] [PubMed]

J. Kauppinen, “Double-Beam High Resolution Fourier Spectrometer for the Far Infrared,” Appl. Opt. 14, 1987–1992 (1975).
[CrossRef] [PubMed]

J. Kauppinen, “A High Resolution Fourier Transform Spectrometer for the Far Infrared and Investigations on the use of the Fourier Method,” Acta Univ. Oulu A 38, 31 (1975).

J. Kauppinen, V.-M. Horneman, Report Series, Turku-FTL-R174 (1989).

J. Kauppinen, “Perfect Optical Alignment of a Very High Resolution Cube Corner Interferometer,” in Ninth International Conference on High Resolution Infrared Spectroscopy, Liblice, Czechoslovakia, 8–12 Sept. 1986.

J. Kauppinen, V.-M. Horneman, “Cube Corner Interferometer with the Resolution of about 0.001 cm−1,” in Ninth Colloquium on High Resolution Molecular Spectroscopy, Riccione, Italy, 16–20 Sept. 1985.

J. Kauppinen, P. Saarinen, “Line Shape Distortions in Misaligned Cube Corner Interferometers,” submitted to Appl. Opt.

J. Kauppinen, V.-M. Horneman, in Handbook of Infrared Standards with Spectral Maps and Transition Assignments Between 3 μm and 2600 μm, G. Guelachvili, K. Narahari Rao, Eds. (Academic, New York, 1986).

Murty, M. V. R. K.

Saarinen, P.

J. Kauppinen, P. Saarinen, “Line Shape Distortions in Misaligned Cube Corner Interferometers,” submitted to Appl. Opt.

Acta Univ. Oulu A (1)

J. Kauppinen, “A High Resolution Fourier Transform Spectrometer for the Far Infrared and Investigations on the use of the Fourier Method,” Acta Univ. Oulu A 38, 31 (1975).

Appl. Opt. (2)

J. Opt. Soc. Am. (1)

Other (5)

J. Kauppinen, V.-M. Horneman, in Handbook of Infrared Standards with Spectral Maps and Transition Assignments Between 3 μm and 2600 μm, G. Guelachvili, K. Narahari Rao, Eds. (Academic, New York, 1986).

J. Kauppinen, P. Saarinen, “Line Shape Distortions in Misaligned Cube Corner Interferometers,” submitted to Appl. Opt.

J. Kauppinen, V.-M. Horneman, Report Series, Turku-FTL-R174 (1989).

J. Kauppinen, V.-M. Horneman, “Cube Corner Interferometer with the Resolution of about 0.001 cm−1,” in Ninth Colloquium on High Resolution Molecular Spectroscopy, Riccione, Italy, 16–20 Sept. 1985.

J. Kauppinen, “Perfect Optical Alignment of a Very High Resolution Cube Corner Interferometer,” in Ninth International Conference on High Resolution Infrared Spectroscopy, Liblice, Czechoslovakia, 8–12 Sept. 1986.

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Figures (5)

Fig. 1
Fig. 1

Optical layout of the high resolution cube corner interferometer.

Fig. 2
Fig. 2

Part of the ν2 band of CO28 with a resolution of 0.002 cm−1.

Fig. 3
Fig. 3

Part of the spectrum of CO, D2O, HDO, and H2O with a resolution of 0.001 cm−1.

Fig. 4
Fig. 4

CO line in the extended scale from the lower wavenumbers of the spectrum in Fig. 3.

Fig. 5
Fig. 5

Tolerance of the moving cube corner as a function of x with the given S/N, Δν, and ν.

Equations (5)

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m ( 0 ) = 2 J 1 ( q ) q ,
q = 4 π ν d ( 0 ) Θ 4 π ν d ( 0 ) Ω π ,
d ( 0 ) 1 8 π ν Δ ν ,
d ( x ) = β x ,
β < Θ ( S / N ) ,

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