Accession Number : AD0853816

Title :   A Spectroscopic Comparison of Holmium Laser Host Materials.

Descriptive Note : Master's thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING

Personal Author(s) : Briesacher, Herbert A.

Report Date : FEB 1969

Pagination or Media Count : 58

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)

Descriptors :   *HOLMIUM), (*LASERS, CRYSTALS), (*RARE EARTH COMPOUNDS, LASERS), (*CRYSTAL DEFECTS, DOPING, ULTRAVIOLET SPECTRA, VISIBLE SPECTRA, GARNET, RARE EARTH ELEMENTS, MOLECULAR ENERGY LEVELS, ALUMINATES, OPTICAL PUMPING, MOLECULAR ENERGY LEVELS, ERBIUM COMPOUNDS, THULIUM COMPOUNDS, FLUORESCENCE.

Subject Categories : Lasers and Masers
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE