OPTICAL PUMPING OF LASERS
Rept. no. 3 (Final) 1 Jun 1969-31 Mar 1970
WESTINGHOUSE RESEARCH LABS PITTSBURGH PA
Pagination or Media Count:
The emission spectra of 40-amp 2.5 atm xenon and krypton arc discharges are calculated. The spectral overlap of these spectra and the measured emission spectra of tungsten and potassium-mercury arc discharges with the measured absorption spectra of NdYAG are used to determine relative system efficiencies which agree well with measured values. It is found that the K-Hg lamp is four times more efficient in pumping NdYAG than the studied W, Kr, and Xe lamps. The spectral overlap calculation for a nominal ruby oscillator- amplifier at the peak of the flash lamp pulse gives a pump efficiency which is much higher than measured system efficiencies. This discrepancy may be caused by the time dependent behavior of the flash lamp pulse and the oscillator pulse. A new technique is developed to obtain electronic radial wave functions from known radial integrals. In a test case, the Cu 4s wave function is determined within plus or minus 8. Group theory is applied to the calculation of radial integrals involving hydrogen wave functions and some selection rules are explained.
- Lasers and Masers