抄録
(1) Einstein's A-coefficent at 1.06μ becomes higher, as quantum efficiency increases and aprzrent lifetime decreases.
(2) Inversion population (or stored energy) becomes larger as apparent lifetime increases.
(3) It is interesting to note that cross section for stimulated emission (or A-coefficient) and stored energy (or inversion population) are in inversely proportional relationship.
(4) From the view point of A-coefficient and inversion population, some phosphate glasses are considered to be the best host for Nd laser glasses.
