OPTICAL PUMPS FOR LASERS - PHASE II.
Abstract
The work consisted of the construction and testing of lamps containing different ratios of Na-Hg amalgams i n both PCA and sapphire envelopes and NaI + Hg in quartz envelopes. High resolution spectra were obtained for many of the lamps to determine the effect of loading on the coincidence of the short wavelength wing peak and 5688A line with Nd:YAG absorption bands. Measurements with argon flow demonstrated that the position of the short wavelength wing peak could be readily shifted by adjusting the flow rate. The superior pumping ability of sodium additive lamps over tungsten filament lamps for cw operation of an Nd:YAG laser has been demonstrated. Further improvement of the additive lamps should be expected by using a square wave or high frequency AC power supply. In addition, operation of Na-Hg lamps at high density of Na and Hg provide a strong continuum in the 7000-8000A region which may prove more effective for pumping than the slightly broadened D lines. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1967
- Accession Number
- AD0812044
Entities
People
- C. H. Church
- D. A. Larson
- I. Liberman
- R. G. Young