Master of Science
Materials Science and Engineering
Kraft, R Wayne.
The lasing threshold energy of several ruby crystals, grown by the flame fusion method, was measured using external mirrors to render constant the effect of mirror losses. The threshold values obtained ranged from a miniumum of 48 oules to a maximum of 91 joules; this variation being entirely due to interanl crystal characteristics.
Ghilarducci, C., "A study of the substructure of ruby crystals and its effect on lasing threshold" (1965). Theses and Dissertations. 3303.