It is shown that the stepwise excitation process from the Cd(II) ground state is the dominant one for the upper state of the 441.6 nm laser line in the positive column Ne-Cd+ laser discharge. The much smaller laser output power in Ne-Cd than that in He-Cd cannot be explained by the nonexistence of the Penning excitation process for the laser upper state in Ne-Cd. It is explained by the smaller stepwise excitation rate for the laser upper state in Ne-Cd than that in He-Cd and the influence of both the laser lower state density and the loss of the cavity.
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Acoustics and Ultrasonics
- Surfaces, Coatings and Films