Research in Laser Processes
Semi-annual rept. 1 Feb-31 Jul 1977
JOINT INST FOR LAB ASTROPHYSICS BOULDER CO
Pagination or Media Count:
Measurements have been made of the electrical and optical properties of electrical discharges in Na-Xe mixtures at high pressures. Although the discharges show desirable features such as a positive volt-ampere characteristics, the excited state densities are too low for useful gain. Since this does not appear to be the case in Tl-Xe, experiments and modeling directed toward an explanation were initiated. Scaling laws for the cathode fall region of discharges in helium have been used to extend low pressure experimental results to high pressures. Measurements are being made of electron excitation rate coefficients for the A 3 Sigma sub u state of N2 in the range of mean energies of laser interest. Predictions have been made of large decreases in optical pumping efficiency at the center of the resonance lines of metal vapors and experiments are underway to test the theory.
- Lasers and Masers