We have observed giant pulses from cw pumped,monolithic Nd:YVO4 microc
hip lasers, several hundred times the cw level, with pulse lengths les
s than 2 ns, which cannot be accounted for by conventional gain switch
ing. These pulses occur as the second longitudinal mode starts to osci
llate and can be described by the inclusion of gain-related effects in
the formation of a stable cavity. (C) 1998 Optical Society of America
.