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Applied Physics B

, Volume 48, Issue 2, pp 105–110 | Cite as

Computer controlled diode laser spectrometer with a helium evaporation cryostat and spectroscopy of thev3 vibration of NCO

  • R. Brüggemann
  • M. Petri
  • H. Fischer
  • D. Mauer
  • D. Reinert
  • W. Urban
Contributed Papers

Abstract

A computer-controlled diode laser spectrometer for the 1200 to 2500 cm−1 spectral region is described. The spectrometer has been applied to high resolution spectroscopy of the NCO radical at 5.2 μm. The lead-salt diode lasers are cooled to their operating temperature with a temperature adjustable helium evaporation cryostat. Computer-controlled tuning procedures for the frequency tuning of the diode lasers have been developed; they are independent of tables describing the tuning characteristics of the diode lasers. 41 lines of the antisymmetric stretching-vibrationv3 of the linear NCO radical have been observed. We were able to detect vibration-rotation transitions in both2π1/2 and2π3/2 fine structure sublevels. These measurements led to the precise determination of additional molecular constants.

PACS

42.60 33.20 

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Copyright information

© Springer-Verlag 1989

Authors and Affiliations

  • R. Brüggemann
    • 1
  • M. Petri
    • 1
  • H. Fischer
    • 1
  • D. Mauer
    • 1
  • D. Reinert
    • 1
  • W. Urban
    • 1
  1. 1.Institut für Angewandte Physik, UniversitätBonn 1Fed. Rep. Germany

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