Performance analysis of a dye-switched ruby laser under the step function Q-switch model

The performance of a dye-switched, 15 cm × 0.95 cm ruby laser, pumped by two linear flashlamps, in a polished, double elliptical cavity is reported. The
Q
-switched output energy is examined under the step function
Q
-switch model. It is noted that the
Q
-switched output energy shows a linear dependence on the flashlamp input energy, at variance with the step function
Q
-switch theory, for a uniformly pumped laser. This anomaly is explained on the basis of non-uniform pumping. The energy ultilization factor using this theory is also reported.