Injection locking in a high-power XeCl laser

Experimental results are presented on injection locking in an XeCl laser with an output energy of 30-40 J and an emission pulse duration of 300 ns. The external signal was 100 ns in duration, and featured a line width of 0.2/cm and an energy of 10 mJ. When the axial region of the unstable resonator was filled with the external signal in the interval from the beginning of pumping up to the time when the threshold was achieved, 90 percent of the lasing energy belonged to the injected line.