Experimental study of small-signal gain and laser beam parameters in high-power pulse-repetitive RF-excited slab CO_2-lasers

摘要

The paper presents the results of measuring of the small-sngal gain (g_0) in the active medium of the high-power pulserepetitive RF-excited slab CO_2-laser. The measurements were carried out for the pumping pulse durations in the range 20.50 mus and pulse repetition rates 100..500 Hz. The maximal specific energy, delivered to the active medium, was 430 W/cm~3. In the experiment were measured the average output power of radiation, pulse energy and power and the output beam divergence.