A high-gain phosphate glass composition, which can be used to produce ultra-short
gain length lasers and optical amplifiers is described wherein the composition
of the glass in addition to exhibiting high gain for lasers and amplifiers, also
exhibits high thermal shock resistance, high cross section, insignificant concentration
quenching, and high solubility for rare earth ions and other properties which enable
the material to be fabricated into a new class of ultra-short length micro-laser,
fiber laser and amplifier configurations and designs.
