FLUORESCENT ION INTERACTION IN LASER CRYSTALS
Semiannual technical summary rept. for 31 May 1967
SPERRY RAND RESEARCH CENTER SUDBURY MA
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Factors influencing the fluorescence of the neodymium ion in garnet crystals especially Y3Al5O12 were investigated in order to improve the laser characteristics of these materials. In order to increase the doping levels of the active ions, the effect of compensating ions on the concentration of neodymium ions for given growth conditions was investigated. Possible deleterious effects in the optical properties of the active ion in the presence of these compensating ions were also studied. The use of energy transfer to enhance the fluorescence of the neodymium ion was considered. Energy transfer from the cerium ion to the neodymium ion was observed. In a collateral study, the optical properties of the cerium ion in garnet crystals were extensively investigated. Methods of improving the efficiency of the energy transfer in these materials were considered.
- Lasers and Masers