Multiple Doped Erbium Laser Materials
Semiannual rept. 1 Oct 1971-31 Mar 1972
AMERICAN OPTICAL CORP SOUTHBRIDGE MA RESEARCH DIV
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The goal under this contract is to develop erbium doped laser glasses whose performance characteristics exceed those of previously developed erbium doped materials. One approach is to optimize the laser rod configuration. The effect of laser rod length on laser threshold and efficiency is reported. Consideration was given to the Double-U laser rod which should provide more efficient coupling preliminary results are discussed. A second approach is to develop high purity phosphated core and cladding glasses which combine the higher oscillator strength of the phosphate glasses with the improved sensitization technique of incorporating the sensitization agent in the cladding material. Efforts toward obtaining these high purity phosphate glasses, fabrication problems of clad rods, sensitization of the cladding and determination of core and cladding compatibility are discussed.
- Lasers and Masers