Research in Laser Processes
Semiannual rept. 1 Aug 1977-31 Jan 1978
JOINT INST FOR LAB ASTROPHYSICS BOULDER CO
Pagination or Media Count:
The optical properties of electrical discharges in high pressure Na- Xe mixtures which are being evaluated for laser applications have been modeled. These models lead to the proposal that suitability of electrical discharge excitation for a metal vapor based excimer laser depends critically on the dissociative recombination coefficient for electrons and the dominant positive ion. Such a model can account for the low excited atom densities found previously in our NaXe experiments. The theoretical predictions of low optical pumping efficiency at the center of the resonance lines have been verified for the D1 and D2 lines of Na vapor, i.e., the fluorescence efficiency decreases to about 7 at line center for a sodium density of 10 to the 15th power atom cu.cm. Much improved measurements have been made of collisional relaxation rate coefficients for the v0 anf v1 vibrational levels of the N2 A 3 Sigma sub u state.
- Lasers and Masers