A Spectroscopic Comparison of Holmium Laser Host Materials.
Abstract
Four crystals YLiF4:Ho(3+) 0.5%; YLiF4:Er(3+) 5%, Ho(3+) 2%; Er2O3:Ho(3+); ABC:YAG) were spectroscopically compared for possible use as 2.1 microns laser materials. The crystals were compared by means of fluorescence, absorption, and selective excitation spectroscopy at 295 and 77K. The best indicator of the efficiency of crystals to convert pump energy to a particular lasing transition is selective excitation spectroscopy. YLF:Ho(3+) is the least promising laser material because of its very sparse and weak selective excitation spectra. ABC:YAG has the most potential because of its broadband absorption and corresponding energy transfers. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1969
- Accession Number
- AD0853816
Entities
People
- Herbert A. Briesacher
Organizations
- Air Force Institute of Technology