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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 68, Iss. 4 — Apr. 1, 1978
  • pp: 432–437

High-resolution electronic emission spectrum of molecular nitrogen at 15300 Å

W. Benesch, C. C. Jones, E. J. Beiting, III, and P. D. Feldman  »View Author Affiliations


JOSA, Vol. 68, Issue 4, pp. 432-437 (1978)
http://dx.doi.org/10.1364/JOSA.68.000432


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Abstract

The 5 m Jarrell-Ash Czerny-Turner spectrograph at the Institute for Molecular Physics has been adapted to spectrometric operation in the 1–2 µm wavelength region. A lead screw assembly with a stepping motor drive has been installed to translate an exit slit that is focused onto a cooled intrinsic germanium detector. The exceptional sensitivity of this detection system has produced good signal-to-noise ratios in the third order of a 300 line/mm echelle grating which yields a reciprocal dispersion of 1.44 Å/mm at the exit slit. The resolution achieved was energy limited at 0.046 cm-1 and the precision of frequency measurement was 0.007cm-1. The 0-0 band of the B3Σ-uB3IIg system of molecular nitrogen was the subject of the investigation. Although this system is known as the infrared afterglow system, the band emits strongly in a dc glow discharge and it has been possible to resolve nearly 1000 lines in the region are from the 0-0 B′ → B transition, with only a small 1 PG emission toward the red end of the band.

© 1978 Optical Society of America

Citation
W. Benesch, C. C. Jones, E. J. Beiting, III, and P. D. Feldman, "High-resolution electronic emission spectrum of molecular nitrogen at 15300 Å," J. Opt. Soc. Am. 68, 432-437 (1978)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-68-4-432


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References

  1. W. M. Benesch and K. A. Saum, "The W3 ΔU state of molecular nitrogen, " J. Phys. B 4, 732–738 (1971).
  2. R. Covey, K. A. Saum, and W. Benesch, "Transition probabilities for the W3 Δu,-B3.IIg system of molecular nitrogen," J. Opt. Soc. Am. 63, 592–596 (1973).
  3. K. A. Saum and W. M. Benesch, "Infrared electronic emission spectrum of nitrogen," Appl. Opt. 9, 195–200 (1970).
  4. E. J. Beiting and P. D. Feldman, "Fabrication and performance of intrinsic germanium photodiodes," Appl. Opt. 16, 800–802 (1977)
  5. D. P. Mathur, R. J. McIntyre, and P. P. Webb, "A new germanium photodiode with extended long-wavelength response," Appl. Opt. 9, 1842–1847 (1970).
  6. William Benesch, Joseph T. Vanderslice, S. G. Tilford, and P. G. Wilkinson, "Franck-Condon factors for permitted transitions in N2," Astrophys. J. 144, 408–418 (1966).
  7. William Benesch, Joseph T. Vanderslice, S. G. Tilford, and P. G. Wilkinson, "Franck-Condon factors for observed transitions in N2 above 6 eV," Astrophys. J. 143, 236–252 (1966).

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