| abstract |
A FLUORESCENT COMPOUND INCLUDES IONS OF CALCIUM, ERBIUM, AND FLUORINE. THE ERBIUM AND CALCIUM IONS ARE PRESENT IN THIS COMPOUND IN THE EXACT RATIO OF 5:2. THIS NEW COMPOUND HAS THE CHEMICAL FORMULA CA2SR5F19. IT SERVES AS A LASER MATERIAL WHEN ACTIVATED WITH HOLMIUM IONS SUBSTIUTING FOR ERBIUM IONS AND ADDITIONALLY SENSITIZED WITH THULIUM IONS FOR ERBIUM IONS. THE COMPOUND MAY ALSO BE FURTHER SENSITIZED WITH YTTERBIUM IONS SUBSTITUTING FOR ERBIUM IONS, IF DESIRED. HOLMIUM, THULIUM, AND YTTERBIUM CONCENTRATIONS RANGE RESPECTIVELY FROM 1-10 PERCENT, 1-10 PERCENT AND 0-10 PERCENT OF THE ERBIUM IONS IN THE CA2ER5F19 COMPOUND. EXPERIMENTAL EVIDENCE INDICATES THAT SENSITIZATION OF FLUORESCENCE OCCURS THROUGH AN INTERACTION AMONG TWO OR MORE OF THE RARE EARTH IONS. |