OPTICAL PUMPING OF LASERS
Abstract
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 Nd:YAG 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 Nd:YAG 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.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 31, 1970
- Accession Number
- AD0707747
Entities
People
- Alex Federowicz
- Irving Liberman
- Lloyd Armstrong Jr.
- Lyle H. Taylor
- Richard Liebermann