Comparison of the output spectra of krypton and xenon filled flashtubes

The spectral output of krypton filled flashtubes has been investigated and compared to that of xenon filled tubes. It was observed that although xenon has a higher luminous efficiency than krypton, the krypton output is 150 to 200 percent of the xenon output at 810 nanometers depending on the input energy level. The implication is that krypton is a more efficient pumping source for lasers with an absorption band in the region of 810 nanometers.