Pumping Mechanism Dependence of Emission Spectra in Mercury Bromide Lasers

  • H. J. Baker
  • A. M. Feltham
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 15)


The gain spectrum of the B→X emission band of the HgBr molecule has been studied in a UV preionized, discharge-excited mercury bromide laser and correlated with computer simulations of the expected spectrum. The results are interpreted as showing that the excitation processes which lead to dissociation into the HgBr(B) state are vibrationally selective. At a two-atmosphere working pressure, the vibrational state selectivity is not masked by vibrational relaxation, showing that relaxation times are long compared to the spontaneous lifetime of the B state. Modelling of the spectrum shows that power extraction from the v’ = 0 level is poor at the usual 502 nm laser wavelength, and at very high pressure, operation may favour blue wavelengths.


Vibrational Level Vibrational Relaxation Electron Energy Loss Spectrum Mercury Isotope Vibrational Distribution 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1987

Authors and Affiliations

  • H. J. Baker
    • 1
  • A. M. Feltham
    • 1
  1. 1.Applied Physics DepartmentUniversity of HullHullUK

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