Spectrum structure of XeCl electric discharge laser

The influence of selective cavity elements, intra-cavity absorption, plasma reaction products in the active medium, and components of the electrode material on the spectrum structure of an XeC1 laser is investigated. The investigations employ high spectral resolution (3 x 10 to the 5th power) with widely varying pressure of the active medium, and cavity construction, incorporating a selectively absorbing cell, making it possible to identify the basic factors determining the formation of the lasing spectrum. The occurrence of an interference structure is observed experimentally, and ways of eliminating it are found. The possibility of controlling the spectrum with the help of dispersing elements and a selectively absorbing cell is demonstrated. Selective losses induced by the OH radical could not be eliminated.