Plasma phenomena have been discovered fairly recently which accompany the collapse of nonunlformities initiated by laser breakdown in different liquids. We are referring to the occurrence of short (t < 10 -7 sec) light pulses and accompanying shock-acoustic pulses formed several tens of microseconds after the initiation of the nonuniformlty [!, 2]. This time interval which separates the instant of initiation and theinstant of collapse of the microobject is the period of pulsation of the cavern which occurs at the point of laser breakdown.